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Relatable·Tech· Mar 23, 2026 · 6 min

Sound Quality Is Fine — It's the Ear Pads That Are *Falling Apart*

The crumbling PU leather problem that headphone users have been quietly enduring for years.

What's going on

Anyone who’s owned a pair of over-ear headphones for more than a year or two has probably run into this: the soft cushions that press against your ears start to flake, crack, and fall apart — leaving little black bits on your face, your collar, and everything you set them down on. The culprit is almost always PU leather (synthetic polyurethane), which is inexpensive to produce and feels fine at first, but breaks down predictably over time as it absorbs sweat and skin oils.

This isn’t a budget-gear problem. It happens to expensive headphones too — partly because environmental and sustainability pressure has made real leather increasingly hard to justify in manufacturing, leaving most brands with synthetic as their default. What makes it especially frustrating is when the pads can’t be swapped out at all: you end up with a pair that still sounds perfectly fine, but looks and feels like it’s actively disintegrating.

A post asking the headphone industry to fix this — before worrying about any more sound quality improvements — struck a chord with a lot of people who’ve quietly been living with it for years.

Comments

Hey headphone industry — sound quality is fine for now, just please make this part out of something that doesn’t fall apart.
ヘッドフォン業界は 音質はもう一旦これで良いから ここが破れない材質にしてくれ
This, for real. I’m begging you.
これほんまマジでそう 頼む
Little black flakes absolutely everywhere…
黒いファサファサが至る所に…
Dead serious. Even a pair you really love starts feeling kind of sad once this happens to it.
これはガチ 愛着あるヘッドホンでもここがボロボロだとちょっと悲しくなるんよな
If it stopped working I’d understand, but having to replace a perfectly functional pair just because the pads got gross — that stings. You can put a cover on them, sure, but the whole point is I shouldn’t have to.
音が聞こえなくなるとかならまだしも ここがボロボロになったから買い替えるってのはモヤっとするんだよな… カバーつければいいんだろうけど、最初からカバーいらないものを作ってくれって言いたいのさ
This is literally why I switched to wireless earbuds. I prefer headphones, honestly. Just couldn’t deal with it anymore.
これが嫌でワイヤレスイヤホンに変えた。 ヘッドホンの方が好きなんだけどね。
Once you’ve been through this, you start thinking twice before buying anything with synthetic leather touching your skin.
これを一度経験したらもう肌に触れる合皮の製品買わないんだよな。
I’ve only ever bought cheap headphones myself — does this happen with the pricier ones too?
安いヘッドフォンしか買ったことないんですが、それなりの値段するクラスのものもこうなるんですか?
I’d been accepting it as punishment for only being able to afford budget gear.
安物しか買えない貧しさに対する罰だと思って受け入れてました
It happens to literally anything made with synthetic leather — no matter the price. You’re not being punished, don’t worry. Unless being a DJ or an audiophile is itself a crime, in which case I’m afraid there’s nothing I can do for you……
合皮製ならなんでもこうなります。罰ではないのでご安心を。DJやオーディオマニアであること自体が罪だとしたら話は別ですが……
These days with all the eco and sustainability pressure, real leather is hard to justify, so even expensive headphones tend to use synthetic. I personally use Mimimamo covers (Mimimamo: a Japanese brand of stretchy fabric covers that slip over ear pads).
最近はエコやらサステナブルやらで本革使えないので、高いヘッドホンでも合皮が多いです。 私はミミマモ使ってます。
Mine happened to my Beats. Cost tens of thousands of yen — you’d think they could spring for better material.
俺のBeatsもなった 何万もするんだからそこにも良い素材使ってほしいよな
Bad enough that they fall apart, but when you can’t swap them out either — you’re completely stuck. Also I just want to be able to wash them occasionally. Is that so much to ask.
破れるだけならまだしも、交換不可だとどうにもならない感 洗濯もしたいので簡単に交換できるようにしてほしいもんです
Genuinely…… The ear pads on a headphone from 1974 being in better condition than something you bought recently isn’t funny anymore……
本当に。。。 1974年発売のヘッドフォンの方がイヤーパッドの材質良いとか、笑えないんだよな。。。
I really need to stop walking into the convenience store with a bunch of flakes stuck to my ears,,
耳にカス沢山ついたまま最寄りコンビニ行っちゃうのやめたいです、、
If they’re going to shed, at least make them skin-colored. Having what looks like bits of nori (dried seaweed — a staple ingredient in Japanese cooking) stuck around your ears is genuinely mortifying,,,
劣化が仕方ないならばせめて肌色に近いパッドにしておくれ。耳についた海苔みたいなのが恥ずかしいて仕方ない、、、
I’ve got the Beyerdynamic DT250 — velour pads right out of the box, no issues there. My advice: just avoid anything with PU leather to begin with.
ベイヤーDT250ですけど、最初からベロア素材使っているので安心です PUレザーを使ったものは避けると良いと思います
I sweat a lot so synthetic leather falls apart on me embarrassingly fast. For a long while now I’ve been exclusively on the AKG K702 — fabric pads all the way.
自分は汗っかきなので合皮はすぐポロポロになってしまうので、ここ最近はずーーっとイヤーパッドが布のAKG K702使ってます
Rather than trying to avoid hydrolysis (the chemical process that causes PU materials to crumble over time) with real leather, it probably just makes more sense to treat them as consumables and swap them out regularly, honestly.
加水分解しないように本革でつくるよりは消耗品と割り切ってバンバン交換する方が正しいよな~
These covers on Amazon work really well — washable too.
このカバーいいよ 洗って洗濯できるし
Got so tired of buying proper pad covers that I started just pulling thin socks from the hundred-yen store over them 😂w (hundred-yen store: Japan’s version of a dollar store)
もうパッドカバーを買うのもうんざりしてきたので、100均の薄い生地の靴下を被せてますw
For the ear pads, depending on the model you can sometimes find third-party replacements — but when the headband itself is wrapped in synthetic leather, there’s genuinely nothing you can do about that part. Really need a solution there.
イヤーパッドは機種によってはサードパーティ製の交換部品あったりするからそれに交換すれば良いけど、ヘッドバンド部分が合皮のものは変えようがないからなんとかして欲しいですな。
This exactly. I use covers too, but the fit ends up slightly off when you do. Just want them not to fall apart in the first place.
ほんとこれ。 カバーつけて使うようにしてますが、 耳の収まり悪くはなるので デフォでボロボロにならないのがいい。
Not talked about enough: the CD900ST (Sony MDR-CD900ST: a widely-used professional studio headphone in Japan) has a thin foam disc stuck to the inner plastic cup that sits directly against your ear — when that deteriorates, the sound genuinely changes. Swapping just the outer pads won’t fix it.
あまり言及されないけど、CD900STは、耳に真っ直ぐ当たる部分のプラスチックに円形の薄いウレタンが貼ってあって、そこが劣化してボロボロになると、完全に音が変わっちゃうので、周囲のパッドだけ交換しても無意味なんだよね。
That’s literally how they make their money.
そこで稼いでいるんやで
It’s Sony, so of course the Sony Timer (“Sony Timer”: a Japanese internet joke about the belief that Sony products are engineered to fail right after the warranty expires) is built into this part too.
ソニー製品なんでこんなところにもソニータイマーが常備されとるって事っす。
Or at the very minimum — please sell the parts separately!
もしくは、そこはパーツで供給していただきたい!
And let us remove and wash them too, please.
取り外して洗えるようにもして欲しい
For Sony’s classic style, replacement pads are all over Amazon and Rakuten — honestly that availability is a big part of why they’ve been bestsellers for so long. With other brands, you can barely find them at all.
ソニーのこのタイプなら、楽天でもAmazonでもパットだけいくらでも売ってますよ 逆にソニーのこのタイプはそれがあるからロングセラーです他のメーカーのほうが探せなくてやばい
Sony’s ones can be swapped out.
ソニーのやつなら交換できる
I use the same 7506 (Sony MDR-7506: a long-running professional studio headphone) and gave up on official Sony pads after my third pair.
うちも同じ7506使ってるけど、3代目を最後にSony純正を諦めた。
Replacement pads are cheap and arrive fast. Super easy to swap out too.
交換パッド安くて頼むとすぐ届きますし 交換すごく簡単でした
For real. I’ve been through several different Sennheisers and every single time, only this part lets them down.
本当に これ ゼンハイザーの色々使ってるんだけど毎回ここだけは本当に駄目
Non-replaceable pads are obviously unacceptable, but even setting that aside — for comfort and hygiene, designing them with periodic swapping in mind is probably just the right approach.
交換不可は論外だが、肌触りを考えると適宜交換する方式がベターなんだろうなぁ。
Truly indestructible pads are probably asking too much, so at the very least — please keep selling replacement parts for a good long time.
それは流石に不可能なので交換品を長く販売して欲しいところです
They’re a consumable part, so please just sell official replacements. You can find things on Amazon, but genuine parts fit better — and third-party options often don’t sit quite right.
消耗部品なので、純正の交換パーツを売って欲しいですよね。 Amazon出探せは有るけど、純正がやはり良いし、微妙に合わない事も多いので。
Fine, they’re going to wear out eventually — I accept that. But could you at least build them with replacement in mind?
破れるのはしょうがないとして、交換前提で作ってくれないかなぁ

My take

PU leather really does start falling apart after just a couple of years. I use covers myself, but honestly — could manufacturers at least make the pads easy to swap out? Just that one small thing would go a long way.
Source & translation note

Comments loosely translated for tone. Reactions collected from Togetter and X threads.

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