#high-impedance headphones

[girl4music]

So it turns out I didn't even need to buy a DAC/Amplifier for my MacBook Air M2. The headphone jack supports lossless listening and playing through high-impedance headphones. i just needed to change the MIDI settings to match the frequency of the tracks I have - which I don't ever go no lower than MP3 320kbps. And yeah, now my music collection sounds bloody incredible through my HD 600's.

I'm a happy music enthusiast now (Girl4Music, isn't my IM name for no reason, you know) I really only needed the DAC/Amplifier for my iPhone 15 Pro Max. Good thing too because this IFI DAC/Amp is tiny and I wouldn't listen through these headphones in public anyway because they leak sound like I don't know what. Sennheiser open back wired headphones are only ever meant for private listening. Unless I can figure out how to work this DAC thing on my iPhone, I guess I'm sticking with listening through my Bluetooth earphones - which unfortunately doesn't/won't ever support lossless listening.

I'm guessing anyway. I don't know if Apple will eventually invent its own audio codec that will support its Apple Music lossless feature through Bluetooth. I know that at the moment it doesn't with any of its headphone/earphone products. Including the high end ones. Not that I would ever use Apple's products for audio listening/playing 🤣

[sirfrogsworth]

Froggie's Guide to Budget Headphones

@nimrella I am more well versed in traditional audio and home theater with big honking speakers, so I don't have much personal experience with headphones and headphone accessories. But I can tell you what I've learned from other people who are in the headphone world. And since you are starting more within the "budget" range I think I am somewhat qualified to guide you at this level.

You have three paths to choose from...

Wireless, low impedance wired (no amplification required), and high impedance wired (amplification required).

Basically... easy, medium, and hard.

But also... good, better, best.

Wireless Headphones

Wireless headphones have come a long way. Audiophiles used to scoff at them but now there are options that really do sound fantastic and the Bluetooth data rates are good enough to deliver high resolution audio. They also have noise cancellation options which may be desirable. If you do not have a quiet, dedicated space for listening to music you might find high end noise cancellation a godsend. People love them especially for planes, trains, and automobiles.

I don't know if everyone knows how noise cancellation works or not, but basically the headphones have microphones that listen to the world around you. They measure the incoming sound and then generate an opposite sound that just about kills ambient noise. If you play the same sound 180 degrees out of phase it basically nullifies those sound waves. The tech works best between 50 Hz and 1000 Hz. For reference we hear between 20 Hz and 20,000 Hz (lower if you are old). So anything super high or super low pitched can still get through.

In any case, if that sounds appealing, wireless headphones should be a consideration.

The other advantage of wireless headphones would be the ease of use. They pair to your phone, your laptop, your TV. They have controls to help you pause and skip songs and change volume. Some allow you to take phone calls.

But the big downside is the sound quality takes a bit of a hit. As I said, the bluetooth standards have actually gotten very very good. (Though there are audiophiles who will swear it still sounds like a 1990s MP3.) So streaming the actual media files are not really an issue. But trying to cram all of that tech into lightweight headphones you can wear around town all day requires compromises and added expense. Not to mention the battery has a limited lifespan. You may have more limited or inconsistent frequency response, poor dynamic range, distortion problems, weak output, and a high noise floor. Wireless options still can't match wired headphone systems in the same price range. And the wireless options that come close are quite spendy.

Wireless Headphones Suggestions

In your price range the two wireless options that I hear mentioned over and over again are the Sony WH-1000 series and the Bose QuietComfort. They are both well regarded for having a good mix of sound quality and noise cancellation while also being a decent value. You might be able to visit a Best Buy and demo them to see if you prefer the sound and comfort of one over the other.

The Apple AirPods Max are said to work really well within the Apple ecosystem. They have some interesting spatial sound modes and very good audio quality. I've heard the noise cancellation is some of the best currently available. But they seem too expensive and a lot of people feel they are too heavy. I also suspect they are due for an update. That said, if you wait for the new ones to come out and buy used, they could come into your price range. I'd really only suggest these if you have multiple Apple products that you will be streaming sound from.

Before we move into wired headphones, let's go over some terms that you might see pop up when doing research and reading reviews.

Froggie's Glossary of Audiophile Terminology

Driver A speaker is made up of drivers. Some speakers have a woofer, a midrange, and a tweeter. Each individual thing is a driver. And with headphones you will often hear "headphone driver" instead of speaker because it is more specific. Headphones typically have an all-in-one driver that does all frequencies. A woofymidteet.

That's not a thing.

I made that up.

Frequency Response This is the range of frequencies produced by the drivers from low to high. You want to make sure your headphones have good, deep bass. That will make more of a difference than anything else. It's the foundation of all sound and what is sorely lacking in devices with small/cheap speakers.

Music typically doesn't go much below 40 Hz in the bass range. So if you are only interested in music listening, that is plenty deep. Movies can go down to 20 Hz, but this isn't necessary for a good immersive experience unless you have giant subwoofers. So if you find something that can play ~40 Hz with decent output, you should be all good. Every speaker has a frequency response curve. It looks something like this.

The X-axis represents the frequency and the Y-axis represents the volume in decibels. We are most concerned with the 40 to 10K Hz section, as most sound happens there.

I'm not going to go super in-depth and overwhelm everyone, but typically you want this graph to look fairly flat in that range. A flat-ish line will give you a "neutral" response.

The above graph gets a little bumpy in the high frequencies. That means those frequencies will have a higher volume than the lower frequencies. If a higher frequency has a big peak, that could make your sound seem too bright or tinny.

Or you could have the opposite problem. You could have a null in the bass where the output dips below everything else. This can make your sound a bit anemic and lacking punch.

Whereas a more flat speaker will output all frequencies at about the same volume and sound much more balanced and smooth.

Equalization or EQ A flat response is good because it will accept EQ well. Equalization is where you add peaks and dips in volume deliberately to taste.

This can be as simple as 3 knobs.

Or it can be a more complicated parametric EQ.

A lot of digital EQ methods have presets to help get you started. I promise it isn't as intimidating as it looks.

Some people like to buy speakers/headphones that are EQ'd how they prefer out of the box. (Or if you get Beats by Dre they just turn the bass all the way up and say "Fuck them other frequencies!") But this is often a bit of a crapshoot because it is hard to EQ a speaker that sounds good in every room or every environment or just to varying individual preferences.

By making the speaker more neutral, it can be much easier to equalize specifically to your needs and enjoyment.

So if you like the bass a little bassier and the mids a little quieter, you have the power to dial that in with great specificity on a neutral speaker. You can apply any EQ you wish and you won't be fighting the speaker's predetermined response.

Basically if you are reading reviews and the headphones are described as "flat" or "neutral" that's a good thing (in my opinion). Just remember nothing is going to be perfectly flat. We're shooting for flat-ish.

If you do decide to get a neutral sounding pair of headphones you may find them a little bland out of the box. Do not panic. You just need to learn a bit about how to apply EQ, but thankfully YouTube is plentiful with tutorials.

The Harman Curve was researched to be most liked by the most people, so you might start there. (Also, SoundSource is a very popular EQ app for Mac.)

Dynamic Range This is the spectrum of how quiet to loud something can get. If you have speakers that can render both a pin drop and a big explosion with great fidelity and proper intensity, you will be in audio heaven. There is so much emotion and drama that can be expressed by expansive dynamic range and most cheap speakers compress it to an inch of its life. When the soft and the loud sounds are the same you miss out on so much audio information intended by the composer.

Distortion This is just how loud a speaker can go without breaking up. Low distortion is good. While every driver distorts at some point, usually that is at a much higher volume than you will use. This typically only plagues cheap, tiny drivers.

Sound Pressure Level (SPL) This is a measurement of how loud a speaker can get. While you don't want to listen to anything louder than a sustained average decibel level of 80 to 85, you do want peaks over 100, especially in the bass. Bass is less damaging to ears and hearing damage is all about sustained volume rather than quick peaks here and there. Most headphones can comfortably do an SPL between 90 and 110 dB. The ability to go louder is good, but only because that expands headroom, not because you should actually listen to them that loud. So if the headphones can get super loud, that means they will have a much easier time delivering normal levels.

Noise Floor Every sound system has background noise. You know that static you hear when you turn a radio up really loud when there is no sound playing? That is your noise floor. You want that to be as quiet as possible because if you turn up the volume, you don't just turn up the volume of the sounds you want to hear, you also turn up the volume of that background noise.

If you can find a headphone system with a decent low noise floor and you can also find a very quiet space to listen in, you could have a religious experience. I don't think people realize how much the room you are in matters, even when listening to headphones. When you are in a quiet room, you can play at lower volumes. And that can mitigate a lot of the problems associated with cranking the volume. You won't damage your ears for one thing. But the speakers won't have to work as hard so you'll have less distortion and better clarity.

Noise mostly comes from the amplifier, which I will talk about later on.

Froggie Pro Tip: If you want cheap speakers to perform better, go to a quiet room and move them as close as possible. This allows you to play them at a lower output while maintaining your desired perceived volume.

Okay, now we can finally talk about...

Wired Headphones

You have open back and closed back styles.

Open back tends to have a more natural sound and feels more comfortable. Like listening to regular speakers. People generally feel they are able to listen to them longer because they don't create a seal and cause pressure on your ear drum. However, if sound can get out, it can also get in. So with open back headphones people nearby will be able to hear what you are listening to. And if you are not in a quiet room, all of that sound will leak in. Meaning you have to increase the volume and the noise floor and the distortion.

Closed back seals off your ears and gives you a quiet and immersive experience. You can be in a noisier room without having to crank the volume as much. Some prefer this style just because it helps them feel like they are going into their own personal dimension of sound. These are great for ASMR too. But ear fatigue can become an issue and you may need to take little breaks to let your ears breathe and your ear drums rest.

And the last thing we need to discuss is impedance.

The impedance of headphones mostly determines how hard they are to amplify. Impedance is measured in ohms which is this little horseshoe symbol... Ω.

Lower ohms means less electrical resistance and easier to amplify.

Higher ohms means more electrical resistance and difficult to amplify.

If you get headphones rated below 100 ohms, they can typically be driven by smartphones and laptops just by plugging into a standard headphone jack. Though depending on the device, 100 may sound a little quiet so you may want to go lower. 30 ohms is fairly typical if you plan to drive your headphones with everyday electronics.

Above 100 ohms you are going to need some sort of amplification—usually a DAC with a headphone amplifier. (There are DACs without amplification so be sure to check that.)

A DAC, or digital-to-analog converter, is already built into your phone and laptop. But those are very small, don't have a lot of power, and might have a higher noise floor due to interference from other components and heat and just a lot of electrical signals nearby.

By getting an external DAC w/amplifier you separate out the components, make them larger and more powerful, and typically improve the sound quality. Because it is more isolated, the amplification can be much quieter despite being more powerful.

If you plan to stay in a static location and you have high impedance headphones, you can get a little box DAC that sits on your desk. It works like an external sound card for your computer. If you record music or stream, a digital audio interface works great as well (remember to check the Ω).

But if you need to be more mobile with your headphones you can get a little USB dongle DAC, though you will probably not get the same sound quality and power.

Both will be superior to the internal DAC built into your computing devices.

So, low impedance headphones are easier if you need to move around.

High impedance headphones are better for staying put in a single location unless you get a dongle DAC.

Just remember, high and low impedance doesn't necessarily indicate quality. It's just that in order to drive high impedance headphones you need the larger amplifier with the nicer components and, by necessity, you automatically get that quality bump.

You can get very good low impedance headphones. However, if you power them *only* with a smartphone, you may not use them to their full potential. Which is why getting an external DAC is a good idea regardless.

But the nice thing about low impedance is you can get the headphones and still use them until you save up for the DAC. Or you can use them as normal while out and about and have a special listening spot at home with the DAC.

To review...

Low impedance and high impedance can both be high quality.

Low impedance (less than 100 ohms) works with anything.

High impedance (more than 100 ohms) requires amplification.

Both will be used to their full potential with a DAC/headphone amplifier of some kind.

Wired Headphones Suggestions

Again, I have not personally listened to any of these. I am just relaying what experts I trust have mentioned as being nice quality in your price range.

The beyerdynamic DT 770 headphones are some of the most well-regarded budget headphones I've heard of. They come in low and high impedance versions.

The Sennheiser HD 560 high impedance headphones are also praised for their value and performance.

If you can go a little pricier...

The HIFIMAN Sundara headphones have low impedance and can be driven easily by all your devices.

And the HIFIMAN Edition XS are even lower impedance and about the same price.

And if you want to try a DAC, I've heard good things about both Fosi and Schiit (yes, like the poopies), though there are many different brands. Just make sure the DAC has a headphone amplifier rated for the ohms you need.

The FOSI K5 Pro is a cheap "beginner" DAC that will power anything up to 300 ohms. This is the kind that sits on your desk.

And if you want a more portable dongle DAC, you can get something like the iFi Go Link.

I've also heard good things about the AudioQuest Dragonfly, though I hate recommending AudioQuest products due to them claiming they can do magical things. They use scientific gobbledygook to scam customers most of the time. That said, the DragonFly might be their only valid product.

Note from Future Froggie: AudioQuest just can't help themselves. While the Dragonfly itself is a good product and not a scam, they developed the "DragonTail", which is a scam.

It's just a USB A to C Adapter for the Dragonfly. But they have to find a way to justify 30 fucking dollars so they came up with this bullshit.

Definitely need to stabilize my geometry. If I have unstable geometry that could lead to quixotic trigonometry. And we all know that could introduce vertices into dodecahedrons. Which leads straight to accelerated cosmotic entropy catalyzing the heat death of the universe.

Fucking AudioQuest.

ANYWAY...

An inexpensive DAC may be all you ever need but DACs can get crazy expensive—just like headphones. And if you are really fancy you can get a DAC and a headphone amplifier as separate items. Audiophiles claim when you simplify components to a singular function you increase quality. While I think there is some small truth to that, I suspect they just think the tubes look neat.

Froggie's Disclaimer: I am not telling you to get these specific things, but I do think you'll probably be happy with anything I've suggested. But sound is a subjective experience and it is always best to test things out before you buy them, if possible. Or make sure there is a return policy. You might see if there is a brick-and-mortar store nearby that allows you to demo headphones. Remember that comfort can be just as crucial as sound quality for long listening sessions.

Final Thoughts

Good sound has been life changing for me. And I am excited when anyone goes down this journey. While the stuff mentioned is considered "budget" by audiophiles, this can give you a good starting point if you want to upgrade down the road. You'll get to know your preferences and get a better understanding of how this all works and choose your own adventure from there.

Though it is very possible you'll be quite content with "budget" and the sound quality is more than enough.

Personally, while I am very happy with my current home theater setup, I am hopeful one day I can upgrade one budget tier above where I currently am and that will be my endgame. I've heard $10,000 speakers and it is mostly a land of diminishing returns once you reach that level.

I'm fine in "budget" land.

Further Research

I didn't mention the different types of headphone drivers because I didn't want to put too much data in everyone's head. But if you want to do additional research you can learn about the 4 main types... dynamic, planar magnetic, electrostatic, and balanced armature.

[outpost51]

Talus and Fira, 11! (please I just want them to be happy 😭)

Send me a Ship and a Number and I will Write a Kiss

uhhhhhhhhhhh i. tried? i think i fit the prompt

11. …in joy.

★・・・・・・★

high five for low lives

Let’s pretend tomorrow night never happened.

T+ || 614 words

Talus was ready to take a six-year nap, and they hadn’t even fully docked the Merkava. Fira's voice had gone hoarse yelling at Janus and Atria to quit fighting on the ship. They’d been in an on-and-off verbal sparring match since they offloaded their cargo on Korlus, and Janus was currently trying to shake the little human’s grip on his crest. Alion was glued to his Omnitool, occasionally lifting his feet to avoid his younger brother’s flailing legs. Nico was blaring some scream-rock band to drown them out; Talus could almost make out the lyrics through his eldest son's headphones.

He pinched the bridge of his nose to suppress the rapidly growing pressure behind his eyes. Shoulda wrapped it, he thought.

“You knock it off, too,” Fira chided. Had he said that out loud? “The VI’s yelling at you to do the thing with the airlock.”

He shook off the impeding migraine and finished the docking cycle. “Ready?”

Fira stepped over Atria's legs, the only part of her visible beneath Janus, who’d resorted to sitting cross-legged on his little sister to prevent any further attacks. She assumed her position at the airlock door, ready to punch the button and release four pent-up fledglings on the spaceport. She nodded to her husband.

Talus whistled.

All motion stopped on the ship as their kids’ heads snapped to attention.

The airlock doors creaked halfway, stuck, and then slammed open.

Her hoodie rustled in the slipstream left by her children.

Talus approved the pre-portioned allowance transfer to each of his kids’ chits, knocking off ten credits each from Atria and Janus. Fira collapsed against the doorway with a long sigh.

“We need a bigger ship. Or longer vacations.” Her voice sounded as tired as he felt, and as he crossed the short distance to his wife, he could see the droop in her mandibles.

“We could always drop ‘em off on Illium and run away to some beach,” he suggested, his subvocals light. Fira smirked, pinching his waist playfully. Her don’t-even-think-about-it look didn’t have its normal impact; her bright amethyst eyes had dulled significantly since they left the drop point. “Think about it,” he rumbled, leaning closer and cupping her delicate silver mandibles in his hands. “No screamin’, no shitty music, not havin’ to read a dictionary every time Ali talks.” Her giggle was accompanied by a soft cuff under his crest. “Ass in the sand, feet in the water, bottle a’ rum between us.”

She hummed. “That does sound nice, but you’d miss them the minute we left port.” Her manicured talon booped his nasal plates. “Big softie.”

Their browplates connected, and Talus let his eyes drift shut, taking in her scent. The hint of incense and vanilla drew him closer. He wanted to drown in it. In the silence of the ship, his mind wandered to white, sun-warmed sand sifting through his fingers and waves sloshing over his bare legs. The sweet cola on her tongue made a cocktail with the ghost of whiskey on his breath.

A shrill “Dad!” shattered their moment of peace. They sighed against each other’s mouthplates and disentangled their legs. Talus shoved himself back, turning to stomp his way off the ship. A sharp slap to his rear stopped him in his tracks.

“This isn’t over, Talus Cassi.” Fira sauntered by him with a wink, knocking her hip against his thigh.

One hand shot out to catch her by the waist while the other connected with the airlock control. The door slammed shut again. “They’ll be fine for a few hours,” he growled, already pulling his giggling wife back towards their bunk. “Maybe the next one’ll have your manners ‘steada mine.”

★・・・・・・★

Oneshots Taglist: @sparatus @thetrashbagswasteland @teamdilf @tabswrites @starknstarwars @sparrow-orion-writes @captain-kraken @cljordan-imperium @the-river-carrion

Ask to +/- in the tags, replies, DMs, or HERE!

[taperwolf]

The first thing I've ever built using vacuum tubes? Worked first try.

Here it is! I posted earlier about the build, and the 45 volt battery, so I'll just add some setup notes. I'm using a "short" wire antenna, at roughly 18 feet long, strung out from here across the living room. The earth ground is to the old plumbing system; the water comes to the taps via modern PVC pipes, but since this apartment building was constructed some time in the 1960s, there's still a stump of copper pipe under the kitchen sink. The headphones were a long ago thrift store find, magnetic high-impedance 'phones with pin connectors; I have no proof of their age, but I've got a big radio equipment catalog from 1956 that shows very similar ones, down to the cloth-covered headband and wires.

Tuning isn't quite as straightforward as it is on a modern radio. The regenerative circuit used here, which dates back to 1912 (!), requires you to tune the capacitor (left) to the station frequency, and then you need to use the regeneration feedback (right) to dial in just the right amount to pull the audio out. That said, it's much better and cleaner reception than the crystal radios I've built; on those, one strong local station would tend to swamp everything else, and the regeneration here is meant to filter that sort of thing out. I had it running for a couple of minutes, just poking around, and positively identified three separate local AM stations. Come nightfall, we DX hunt!

[spicykaraage]

Tenipuri Complete Character Profile - Akira Kamio

[PROFILE]

Birthday: August 26th (Virgo)

Blood Type: O

Relatives: Father, mother, older sister

Father’s Occupation: Company Employee (travel agency)

Elementary School: Fudomine North Elementary School

Middle School: Fudomine Junior High School

Grade & Class: Second Year | Class 2-3 | Seat 4

Club: Tennis Club (vice captain)

Committee: None

Strong Subjects: PE (short and long-distance running), music

Weak Subjects: Chemistry, English

Most Visited Spot at School: Class 2-2

Favorite Motto: “Hard work does pay off.”

Daily Routines: Choosing which CD to wake up to in the morning

Hobbies: Looking for music that will get him into the rhythm, karaoke ➜ Checking out mascot character programs, BMX [TP]

Favorite Color: Neon yellow, neon pink [TP]

Favorite Music: Rock

Favorite Movie: Action films

Favorite Book: Music magazines, books on outer space [23.5]

Favorite Food: Pot-au-feu, spinach ohitashi [removed], takuan [TP], Captain Tachibana’s gratin [TP]

Favorite Anniversary: The day he met Captain Tachibana

Preferred Type: A girl with a cute smile

Ideal Date Spot: “I’m fine with just being able to go to school together!” ➜ “Let’s go to a fast food place after school!” [23.5]

His Gift for a Special Person: A matching keychain

Where He Wants to Travel: “California’s Land of Dreams!”

What He Wants Most Right Now: A new bicycle ➜ An idea that would surprise Captain Tachibana [23.5]

Dislikes: Rain (since he can’t run) ➜ Maid cafés (Sengoku took him to one) [TP]

Skills Outside of Tennis: Tap dancing, can talk to cheetahs(?) [TP]

Spends Allowance On: CDs

Routine During the World Cup: Finding local keychains

[DATA]

Height: 165cm | 5’4” ➜ 166.5cm | 5’5.5” [23.5]

Weight: 52kg | 114 lbs ➜ 53kg | 116 lbs [23.5]

Shoe Size: 27cm

Dominant Arm: Right

Vision: 2.0 Left & Right

Play Style: Counter Puncher

Signature Moves: Sonic Bullet

50m Run: 5:09

Equipment Brands:

Racket: DUNLOP (XL MEGA IMPEDANCE TITANIUM)

Shoes: NEW BALANCE (WCT 800)

Overall Rating: Speed: 5 / Power: 2 / Stamina: 3 / Mental: 2 / Technique: 3 / Total: 15

Kurobe Memo: “Kamio has yet to fully make use of his speed. He should learn to use his abilities in a subtle way and not by showing off to his opponents.” <Official Description>

[POSSESSIONS]

What’s in His Bag [20.5]:

Headphones: High performance, state-of-the-art headphones. The sound quality is excellent, and the bass is very resonant

MiniDisc walkman: The source of his rhythm, it’s resistant to vibration and has a long-lasting battery

Cell phone: An ordinary cell phone with a camera. Ibu calls him every week and complains for long periods of time…

Chocolate bar: Meiji milk chocolate, to help replenish his energy

Two tickets to a concert: He’s had them in his bag for about a week, trying to find a way to ask out a girl he has a crush on

MiniDiscs: Techno, dance, rock, and hip hop… He has random songs to get him into the rhythm

Hairspray: Cape brand. He uses it to maintain his bangs whenever he gets a break

[TRIVIA]

The Prince of Tennis 20.5 Fanbook | Publication Date: 12/04/2003

He is described to be calm and have good judgement and insight, but is difficult to read which makes him unpopular with girls

He is described to not be good at interacting with others, like keeping secrets and not express much emotion

He is described to often get the short end of the stick in situations since he puts his friends before himself, but also has a mean streak where he’ll oppress those he dislikes

His ideal profession would be a novelist, since he has trouble with his relationships and interacting with others

His bangs do hinder him during matches, but he doesn’t mind it

He does not remember when or why he started his habit of “getting into the rhythm”

The Prince of Tennis 40.5 Fanbook | Publication Date: 12/04/2007

He is described to have a high level of pride and ambition, and dislikes being subordinate to others

He is described to be a man of foresight and planning, and grows rapidly when going with the flow, but also has strong emotional ups and downs and has trouble recovering when he’s down

In the previous fanbook, it stated that he had tickets to a concert for him and An and was trying to find a way to ask her out. It’s revealed that he did manage to go see the concert with her, ate food with her, and invited her again afterward, but nothing more happened after that

The Prince of Tennis II Official Character Guide: PairPuri Vol. 2 | Publication Date: 12/04/2009

He had overheard Sengoku saying he thought Fudomine’s manager was cute and got angry over it

The Prince of Tennis II Official Character Guide: PairPuri Vol. 3 | Publication Date: 01/04/2010

His music player had been broken, but was then quickly fixed by Gakuto

The Prince of Tennis II Official Character Guide: PairPuri Vol. 4 | Publication Date: 02/04/2010

He, Kenya, and Richard had competed to see who could get out of the bath the fastest

The Prince of Tennis II Official Character Guide: PairPuri Vol. 7 | Publication Date: 07/04/2011

He was seen enjoying rock music with Hirari and Tenjin

The Prince of Tennis II 10.5 Fanbook | Publication Date: 09/04/2013

He listens to ballads at twice their speed

He keeps an eye out for when his favorite bands’ new songs are released in karaoke

The Prince of Tennis II 23.5 Fanbook | Publication Date: 05/02/2018

He is not good at applying eye drops and asks Ibu to help him with it

He had asked An out on a date to go hold koalas, but she declined

The Prince of Tennis 20th Anniversary Book: Tenipuri Party | Publication Date: 08/02/2019

He is on the tennis club rather than track-and-field since he wants to enjoy actually playing a game

An thinks of him as a close friend who’s like a little brother to her

[mesimees]

I've been seeing some people being confused in the notes so,,,

While modern radios have way more elements than this, if the signal is strong enough that's technically all you need. ... okay and some wire i suppose.

Because radio waves are electromagnetic and they oscillate, they create a small current in a conductor (that's induction!). The diode together with a person holding it serves to "decode" the radio signal. The diode rectifies it and the person, acting as an antenna, both picks up the signal and acts as a crude low pass filter. That's all you need to decode an AM (amplitude modulated) signal. With the magnet and tin can, you can make a speaker to then listen to that decoded signal. Mind you that this would be an untuned radio, picking up many frequencies at the same time. You'd hear them overlap.

I intentionally said AM and not FM because the latter is not that easy to decode and would need additional materials.

In this post I'm slightly exaggerating how easy it'd be to listen to a signal like that with some quality but technically with a strong signal it's absolutely possible and even if you do add some more elements to make the signal clear and specific you still wouldn't need an additional power source. The only thing an AM radio typically needs a power source for is a sound amplifier, but if you use high impedance (2k Ohm) headphones you don't need that. The catch is that these can be hard to find these days, but you can still make them out of e.g. piezoelectric buzzers or indeed a magnet and a tin can.

AM radio is like literal magic. There is music all around us that we can't hear, and to hear it you just have to tap a crystal (diode) to the earth and listen to it with another magic rock (magnet) and a tin can. You dont even need electricity to make it work because this music around us is literally all the power you need. Oh and at night when the sun has set, the light of the day gets replaced by MORE music because the signals can travel further at night. This is magic. If you even care.

[digitaldreamspace]

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Certifications: CE RoHs FCC ✅

Why should you choose the ResonanceX headphones?

1.Unrivaled sound quality: The ResonanceX headphones have an extended frequency spectrum from 10 Hz to 25,000 Hz 🎶. This enables pure and detailed audio playback that makes the hearts of music lovers and audiophiles alike beat faster ❤️. Whether you enjoy classical music, modern hits, or frequency music specifically developed for therapeutic purposes 🌿, the sound quality of these headphones is simply unbeatable.

2.Ideal for various applications: These headphones are not only perfect for listening to music 🎧, but also for meditators and users of frequency therapies 🧘‍♀️. The optimized frequencies support biofrequencies, Solfeggio, and Rife tones that are increasingly gaining importance in naturopathy and spiritual development 🌱.

3.Authentic sound experience: The ResonanceX headphones offer original fidelity 🎤. Without the need for additional equalizers or compressors, they deliver authentic sound. You hear the music or frequencies exactly as they were originally recorded, which is a true delight for all those seeking a genuine sound experience 🎧🎶.

4.Comfortable and practical design: The ergonomic, noise-cancelling pads and the adjustable fit ensure maximum comfort, even during long listening sessions 😌. The detachable cable with two jack sizes provides additional flexibility 🖇️, and the cable-free design reduces E-Smog emissions to a minimum, improving your health protection 🛡️.

The technical details behind the perfection

Technically speaking, the ResonanceX headphones are also impressive 👏. With a 40MM Dynamic Driver and an impedance of 64 Ohms, they guarantee stable and efficient performance. Certifications such as CE, RoHs, and FCC confirm the high quality and compliance with international standards ✅.

Experience the full range of spryfuel® frequencies

If you want to experience the full bandwidth of spryfuel® frequencies, the ResonanceX headphone is the perfect addition 🎉. It is perfectly tuned to the popular spryfuel® frequencies and allows you to optimally utilize the unique benefits of these frequencies 🌈.

Conclusion

The ResonanceX headphones by spryfuel are not just a high-quality audio device, but also an investment in your musical satisfaction, your relaxation, and your health 🌟. If you are finally looking for a headphone that truly delivers quality and meets your needs, then you should try out the ResonanceX headphones 🎧✨.

Discover the world of high-quality audio experiences today! 🎶💫

[atplblog]

Price: [price_with_discount] (as of [price_update_date] - Details) [ad_1] From the manufacturer In-Line Mic for Hands-Free Phone Calling For people who love listening to music on the go can switch from music to call with one touch. 9 mm Neodymium Drivers for Powerful, Balanced Sound Feel the thump of bass and the clarity of midrange and treble sounds with high-power neodymium magnets. Smart-Key App Simplify your life. Personalize your headset with this easy-to-use application. Configure your mic button to chose from Volume control or track control functions. Download the application from play store and follow easy intructions to set functions from mic button. This applcation is comapatible with andriod 4.0 and above. Lightweight for Ultimate Music Mobility Enjoy music for long hours without any discomfort. Comfortable Silicone Earbuds Enjoy comfort and stability with hybrid silicone earbuds, provided in 3 sizes for that perfect fit. Wire Manager Comes with a wire manager to save your headphones wire from getting tangled. Match your Style With 5 different colors to choose from you can pick the one that suits your style. 8 Hz - 22 kHz Frequency Range The wideband frequency range spanning 8Hz to 22kHz helps to hear the detail in every track and stay in tune with all your music. Enjoy clear, powerful sound with high-power neodymium magnets Avoid annoying tangles with the Y-type cord and slider ; Cord length: 1.2 m ; 9 mm neodymium drivers for powerful, balanced sound ; 8 Hz–22 kHz frequency range ; Sensitivity: 100 dB/mW ; Impedance: 16 ohm Get a comfortable fit with hybrid silicone earbuds (3 sizes) Cord adjuster supplied Customize smartphone controls for Android devices with Sony's easy-to-use Smart Key app 1 Year standard warranty [ad_2]

[aaryan-mwa-blogs]

Why Headphones Matter for Mixing and Mastering

Headphones are an invaluable tool for music producers, especially when you’re working in less-than-ideal acoustic environments. Unlike studio monitors, which require a treated room for accurate sound, headphones eliminate room acoustics altogether, giving you a direct and unaltered listening experience.

When mixing and mastering, you need headphones that deliver a flat frequency response. This means the sound you hear is as close as possible to the original recording—no boosted bass, no exaggerated treble—just an honest representation of your mix.

Key Features to Look for in Mixing and Mastering Headphones

Before diving into the top options, let’s break down the features that truly matter when selecting headphones for mixing and mastering:

1. Neutral Frequency Response

The most important factor is a flat and accurate frequency response. This ensures your mix translates well to other playback systems, from car speakers to earbuds.

2. Comfort for Long Sessions

Mixing and mastering can take hours, so comfort is non-negotiable. Look for lightweight designs, adjustable headbands, and plush ear padding.

3. Closed-Back vs. Open-Back

Open-back headphones: Offer a natural, airy soundstage, making them ideal for detailed mixing. However, they let sound leak out and aren’t suitable for noisy environments.

Closed-back headphones: Provide better isolation, which is great for recording or mastering in shared spaces.

4. Build Quality

Durability is key, especially if you’re constantly on the move. Look for sturdy materials and detachable cables for added longevity.

5. Impedance and Amplification

High-impedance headphones often provide better sound quality but require a headphone amplifier to perform at their best. Be sure to check compatibility with your existing gear.

Top Headphones for Mixing and Mastering in 2025

With so many options on the market, narrowing down the best headphones can feel overwhelming. Here are some standout picks that have consistently earned praise for their performance, comfort, and value:

1. The Precision Performer

These headphones are the gold standard for detailed audio work. They deliver an incredibly flat frequency response, making it easy to spot every nuance in your mix. The open-back design provides a spacious soundstage, allowing you to place instruments accurately in the stereo field.

2. The Comfort King

Designed for extended studio sessions, these headphones prioritize comfort without sacrificing sound quality. With a balanced sound profile and soft, replaceable ear pads, they’re perfect for producers who spend long hours tweaking mixes.

3. The Isolation Expert

If you’re mixing in a noisy environment or need a pair of headphones for both recording and mastering, this closed-back model is your best bet. It offers excellent noise isolation while still delivering a balanced and detailed sound.

4. The Budget-Friendly Pro

For those just starting out or working on a tight budget, this option delivers impressive sound quality at an affordable price. While it might lack some premium features, it’s more than capable of handling mixing and mastering tasks.

5. The High-End Marvel

If you’re ready to invest in the best of the best, this pair offers unparalleled audio fidelity. Designed with professional studios in mind, it combines advanced drivers with premium materials to deliver an unrivaled listening experience.

Why Investing in Quality Headphones Matters

Mixing and mastering are all about precision. Cheap, consumer-grade headphones often color the sound, adding unnecessary bass or treble boosts that can mislead your ears. This can result in a mix that sounds great on your headphones but falls flat on other systems.

Investing in high-quality headphones from a professional audio shop ensures you’re getting a product designed for the job. These shops often provide expert guidance, helping you choose headphones that match your specific needs and budget.

Tips for Getting the Most Out of Your Headphones

Having the best headphones is only part of the equation. To truly excel in mixing and mastering, follow these tips:

1. Use Reference Tracks

Compare your mix to professionally mixed tracks in a similar genre. This will help you identify areas where your mix might need adjustment.

2. Take Breaks

Your ears can become fatigued during long sessions, leading to poor decisions. Take regular breaks to keep your ears fresh.

3. Pair Headphones with Monitors

While headphones provide great detail, they lack the spatial accuracy of studio monitors. Alternating between the two can give you a more complete picture of your mix.

4. Calibrate Your Listening Volume

Listening too loudly can lead to ear fatigue and skewed perception. Aim for a consistent, moderate volume level.

Conclusion

The right headphones can make all the difference when it comes to mixing and mastering. They provide the accuracy and detail needed to create a mix that sounds amazing on any playback system. As you explore your options in 2025, remember to prioritize features like flat frequency response, comfort, and build quality. Purchasing professional-grade headphones is a smart investment in enhancing your skills and elevating your work. Whether you’re a seasoned producer or just starting your journey, the right gear will help you hone your skills and achieve the sound you’re striving for.

[accusticarts]

The Power Behind Perfect Sound: Choosing the Right Headphone Amplifier

Experience exceptional sound with Accustic Arts. We are your partner for high-quality audiophile audio components. Our range includes everything you need for a perfect sound experience, from preamplifiers to CD players and integrated amplifiers. Let our experts advise you and discover how you can take your audio system to the next level. Discover our selection of high-quality preamplifiers, renowned for their precise sound reproduction and outstanding performance—ideal for audiophile demands and fine-tuning your hi-fi system.

Enjoy your music in the best quality with our first-class CD players. Our devices offer exceptional sound fidelity and reliable playback of your favorite albums. Our integrated amplifiers combine power and precision for an unrivaled listening experience. They are the perfect choice to give your speakers a powerful and clear sound. Stereo headphone Amplifier Our headphone amplifier is a low-powered audio amplifier designed to drive headphones worn on or in the ears instead of loudspeakers in speaker enclosures. Stereo headphone Amplifier Low-impedance headphones may not be loud enough—and might even incur clipping (distortion) from a portable device; thus, for these headphones, the user experience can be significantly improved by adding a headphone amp. Headphone amplifiers are usually found embedded in electronic devices with a headphone jack, such as integrated amplifiers, portable music players (e.g., iPods), and televisions. Powerful Amplifier A powerful amplifier (PA) converts a low-power signal to a higher-power one. Two common examples are audio amplifiers, used to drive loudspeakers and headphones, and RF power amplifiers, such as those used in the final stage of a transmitter. An amplifier can be a separate piece of equipment or an electrical circuit within another device. Amplification is fundamental to modern electronics, and amplifiers are widely used in almost all electronic equipment. Amplifiers can be categorized in different ways. One is by the frequency of the electronic signal being amplified. Power Amplifiers Power amplifiers are divided into classes based on their characteristics. Classes A, AB, B, and C depend on their conduction angle, which is the number of degrees in a cycle during which the amplifying device conducts. Classes D and E are switching amplifiers. Classes D, DG, and H are also common audio amplifiers similar to Class AB but using different techniques to improve efficiency. A Class A amplifier has a 360o conduction angle. It is the most linear, meaning the output signal is the best input representation. Subsequent classes are increasingly efficient and decreasingly linear. Our class D amplifiers use pulse-width modulation (PWM) to produce a rail-to-rail digital output signal with a variable duty cycle to approximate the analog input signal. They are highly efficient because the output transistors are always fully turned on or off.

Read More Resources

Hi-Fi  Awards 2025 TUBE PREAMP V

Review PREAMP V in stereo magazine

[bonastudios]

HiBy R6III 2025 DAP Player Hi Res Audio with Class A&AB Amp/Android 12 / Bluetooth 5.0 / WiFi /64G+2TB Expandable Memory

Price: (as of – Details) The portable digital audio player features Class A and Class AB headphone amplifiers, delivering exceptional sound performance and robust driving capability, especially suitable for large headphones and high-impedance in-ear monitors. The portable digital audio player features Class A and Class AB headphone amplifiers, delivering exceptional sound performance and robust…

[charlesmwa]

How to Maximize Your Audio Gear Investment: Tips for First-Time Buyers

Investing in high-quality audio equipment can feel like a big leap, especially if you’re new to the world of sound gear. Whether you’re looking to upgrade your home studio, enhance your DJ setup, or finally get those headphones that will transform your listening experience, making the right choice is crucial. But with so many options out there, it’s easy to get overwhelmed by technical jargon and flashy marketing. As a first-time buyer, it’s essential to approach this decision strategically to ensure you get the best value for your money.

In this blog, we’ll break down how to maximize your audio gear investment by offering practical tips that will help you make informed decisions. From understanding your needs to choosing reputable shops and considering long-term value, these strategies will guide you towards making a purchase you won’t regret.

Know Your Needs Before You Buy

It might sound simple, but one of the most common mistakes first-time buyers make is not clearly defining what they actually need. Audio gear can range from entry-level to professional-grade, and the gear you choose should align with your specific requirements. Are you a budding DJ who needs portable speakers for gigs? Or are you a musician looking for studio monitors to mix your tracks? Or perhaps you’re a content creator in need of a versatile microphone and headphones?

Before diving into the vast sea of products, ask yourself:

What type of audio work will I be doing?

Will this gear serve my needs both now and in the future?

Do I have the space and technical setup required for this equipment?

Knowing exactly what you need will help narrow down your options and save you time and money. Many first-time buyers end up purchasing equipment that’s either overkill for their needs or doesn’t offer the features they actually require.

Prioritize Sound Quality Over Brand Names

It’s easy to get caught up in the hype of popular brands, but focusing on sound quality rather than labels will lead to a much better experience. Brand names can often be synonymous with premium prices, but the name doesn’t always guarantee the best sound for your specific needs. It’s the audio quality that truly matters, whether you’re mixing tracks, recording vocals, or simply listening to music.

When evaluating audio gear, consider factors like:

Frequency response (how well the equipment reproduces low and high sounds)

Impedance (especially for headphones or speakers)

Distortion (does the sound stay clear at high volumes?)

Build quality (does the gear feel sturdy and durable?)

Take the time to listen to different products in person, whether through demos or in-store testing. If you’re unsure, it’s always a good idea to consult expert opinions from reliable sources or ask for recommendations from fellow audio enthusiasts. When buying from a reputable audio shop, you’ll have the opportunity to test the gear before committing to a purchase.

Understand the Importance of Compatibility

One mistake that’s easy to overlook is whether the gear you’re purchasing is compatible with your current setup. Audio equipment comes in a range of formats and connection types—USB, XLR, 3.5mm, RCA—and each device has specific input and output requirements.

For example, you may fall in love with a pair of studio monitors, but if your current audio interface only supports headphone outputs, you won’t be able to connect them without additional adapters or equipment. Similarly, some microphones or mixers may require certain audio interfaces, while others are plug-and-play.

Before making any purchase, carefully check whether the gear is compatible with your existing equipment. This will help you avoid extra costs or frustration later on. Compatibility is one of those factors that can seem small at first, but it can become a major roadblock if you don’t pay attention to it early on.

Invest in Quality, Not Quantity

When starting out, it's tempting to buy everything at once, thinking you need all the latest gadgets to get the best results. However, focusing on a few high-quality pieces rather than buying a full setup of mediocre gear can make a huge difference. For example, a good pair of headphones or speakers can elevate your entire audio experience, while cheaper alternatives might leave you disappointed or unsatisfied.

Start by focusing on the core elements you need for your specific purpose. If you’re setting up a home recording studio, invest in high-quality microphones and audio interfaces. If you’re a DJ, prioritize speakers, controllers, and mixers. By starting with the essentials and building your setup gradually, you ensure that each piece of equipment serves a specific purpose without stretching your budget too thin.

Consider Future Expansion and Upgrades

One of the biggest advantages of investing in quality audio equipment is the potential for future upgrades. High-quality gear tends to last longer and can grow with you as your needs evolve. Rather than settling for entry-level equipment that may need to be replaced sooner, consider how your audio gear could fit into a more advanced setup down the road.

For example, a good audio interface can support multiple input devices, allowing you to add more microphones, instruments, or external processors as you expand your setup. Similarly, high-end speakers or headphones will deliver better performance as you refine your skills and grow into more demanding tasks.

Planning for upgrades allows you to invest in equipment that will serve you for years, saving you money in the long run and minimizing the hassle of frequent replacements.

Don’t Skip After-Sales Support

When purchasing high-end audio gear, it’s easy to focus solely on the specs and features, but after-sales support is just as important. A good warranty, tech support, and return policy can make a huge difference if anything goes wrong with your equipment after the purchase. Always check what kind of after-sales support the store or manufacturer provides.

Having access to reliable customer service means you won’t be left in the lurch if you encounter issues with your gear. Whether it’s troubleshooting, getting replacement parts, or returning a faulty product, you’ll appreciate knowing that support is just a phone call or email away.

When buying from a professional audio shop, you often get the added benefit of knowledgeable staff who can guide you post-purchase, helping you get the most out of your equipment.

Do Your Research and Read Reviews

Before you make your purchase, always research the gear you’re considering. Check out online reviews, forum discussions, and video demos to see what others have to say about the product. Look for feedback from users with similar needs, and pay attention to both the positives and the negatives.

Don’t rely solely on one source; the more information you gather, the more confident you’ll feel in your decision. It’s also helpful to get recommendations from friends or mentors who have experience with audio gear—they can offer valuable insights that you might not find in reviews.

Maximizing Your Budget

It’s easy to overspend when you’re excited about getting new gear, but sticking to a budget will help you maximize your investment. Setting a clear budget before you begin shopping helps you avoid impulse buys and ensures you’re prioritizing quality without breaking the bank. Look for sales or discounts, and consider buying gently used or refurbished gear from reputable sources. These options can provide significant savings while still offering high-quality equipment.

Make a Smart, Informed Investment

Buying audio equipment for the first time is an exciting experience, but it’s important to approach it with careful consideration. By understanding your needs, focusing on quality, and doing your research, you can maximize the value of your investment and avoid costly mistakes. Whether you’re building a recording studio or enhancing your home entertainment setup, the right audio gear can make all the difference.

Remember, purchasing from professional audio shop ensures that you’ll have access to knowledgeable support and high-quality products that align with your long-term goals. With the right mindset and strategy, you’ll be able to make a purchase that will not only serve you now but also grow with you as your skills and needs evolve.

[accidentalaudiophile]

Fiio K11

Upgrading my desktop pc at the start of this year showed me an unfortunate side to having good headphones: if something down the line is having some issues, you're going to notice them more. In this case, the way the tower was set up meant that the front headphone jack caught a bunch of interference (by no means a terrible amount, I'm just a tad sensitive to it now).

The easiest solution is to get an external DAC (Digital to Analog Converter, turns the ones and zeroes into the analog signal needed to drive speakers/headphones). I figured, might as well get a decent one so it can also drive heavier headphones I might end up owning down the line. Hence, the K11: a relatively budget-friendly desktop DAC (around 130 euros) with a good set of in- and outputs. I currently only use the USB interface as input and the headphone jack as an output, but it's got more option than that. It does use the big jack (no worries, an adapter is included for the standard jack, if you're using the balanced jack you're deep enough in the weeds you probably have that covered already), which makes it feel decidedly serious. That said, the majority of people aren't going to need one (want is another matter entirely), with how well thought-out most designs for computers are these days.

Now, a DAC shouldn't have too much of an impact on your music, though they often do tend to colour the experience slightly. The K11 seems fairly neutral in this regard, at least not too different from what you'd expect to encounter as part of a standard computer setup, just a bit cleaner and more capable. Currently, I'm using it on the low power setting, as my various headphones don't need high power to work well. The controls on the device itself are kept very simple, a single dial also functions as a button, which normally controls the volume. Short press on the button switches over from front to rear output, allowing quick changes between headphones and speakers, a nice touch. Longer presses enter the menu where various things can be adjusted, and even longer functions as the off button (could've been good to have a separate one for that, but this is fine).

Without additional drivers the K11 works perfectly fine on modern computers, with the additional drivers you can push the sound quality up a bit more, to the frankly ludicrous. A sample rate of 48 kHz at 16 bit is pretty typical of laptops, with the drivers you can get (off the top of my head) a sample rate of 192 kHz at 24 bit, which only really makes a difference if your source is similarly detailed (the average CD very much isn't). Still, it feels nice to have the option, and with good audio staying good, it's nice to have a bit of space open for where my journey takes me.

All in all, a decent device if you find yourself in need (or want, that's valid!) of a DAC and want to have the option of driving somewhat higher impedance headphones. I can see it being very useful for switching between speakers and headphones as well, so if that's a usecase that comes up a lot for you it might be worth a look.

[tech-rabbit]

Acer Predator Helios Neo 14 Gaming Laptop

If you want to have a laptop on which to play video games, then I have an offer for you. Acer Predator Helios 14 gaming laptop.

The laptop contains an Intel Core Ultra 9 185H central processor. It provides a special mechanism that unlocks the experience of artificial intelligence on a PC, which takes graphics to a higher level. It also has low power consumption, which means you can work for longer without plugging your laptop into the power grid.

The player will also be most interested in the video card, as it is an important computer hardware for video games. The laptop has an NVIDIA GeForce RTX 4070 graphics card based on artificial intelligence and enhanced DLSS 3.5 technology.

As for cooling: The laptop has cool 5th generation AeroBlade 3D fan technology, vector heat pipes, and liquid metal thermoplastics. This allows this laptop to maintain high performance even when it gets too hot! The dual-fan system with VortexFlow improves system cooling by continuously pulling cooler air inside the laptop.

This laptop also features Purified Voice 2.0 technology. This revolutionary technology uses artificial intelligence to eliminate unwanted background noise, ensuring the best clarity of your voice. With a three-microphone setup and beamforming, your commands stand out without other ambient noise.

The laptop includes the following components: 16GB RAM, 1TB PCIe Gen 4 SSD, microSD card reader, Killer Wirelees Wi-Fi 6E AX1675 with support for dual-stream Wi-Fi in the 2.4GHz, 5GHz, 6GHz band, 2x2 MU-MIMO technology, Bluetooth 5.3 or higher, Bluetooth LE Audio, DTS support: X Ultra Audio.

The laptop has the Microsoft Windows 11 Home operating system with the Copilot AI assistant installed.

Personalization with PredatorSense 5.0: Control and personalize your notebook with the PredatorSense 5.0 utility program. Get creative and combine colors to your heart's content. The app gives you full control to personalize the RGB keyboard lighting in three zones, switch between four gaming-oriented operating modes, and adjust fan dynamics while monitoring system health. All of these features are conveniently placed in one accessible program.

The laptop has the following ports: one Thunderbolt 4 port, USB Type-C port, USB 3.2 Gen 2 (up to 10 Gbps), microSD card reader slot, DisplayPort via USB Type-C, USB Charging & Power Delivery, one USB 3.2 Gen 2 port with power off option, HDMI 2.1 port with HDCP support, and ports for headphones, speakers, line out with support for high-impedance headsets.

[bizonmark]

Sleep Bluetooth Headphones Noise Cancelling Painless Wireless Music High Quality

  Parameters: ●Bluetooth version :Bluetooth 5.3 ●Sensitivity：96db + 3db ●Charging interface :TYPE-C ●Frequency response range：20HZ-20KHZ ●Impedance：32Q±15 % ●Ultra long standby：240 hours ●Charging times of charging compartment：4-6 times ●Single use time：6-8 hour ●Standby time：240 hour ●Product size：76*57*36 mm Feature: * IPX5 Waterproof and Dustproof * High Capacity Battery * HD Voice * HiFi…