We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-23 · 6 min read · Independent comparison
If you want to restore a pair of Sony studio headphones with genuine factory earpads, choose Sony Genuine Replacement Ear; if you need a discreet listen-only earpiece for a radio or speaker mic, choose HYS 2.5mm. These two products share the word "ear" and almost nothing else — one is a maintenance part, the other is a communication tool. The right pick comes down to what you already own, not which one is "better."
• Sony Genuine Replacement Ear — biggest strength: genuine Sony leatherette-and-foam cushions with a printed-label retail package, sized specifically for MDR-7506, MDR-V6, MDR-V7 and MDR-CD900ST.
• Sony Genuine Replacement Ear — biggest trade-off: it is a fitment part, not a universal pad — it will not fit MDR-V600, V900, V7509 or Z600, and it does nothing on its own without a compatible headphone.
• HYS 2.5mm — biggest strength: a complete listen-only kit — acoustic tube, 2.5mm right-angle plug, and a pair of medium earmolds in left and right — that plugs straight into a shoulder mic or speaker mic.
• HYS 2.5mm — biggest trade-off: it is receive-only and wired to a 2.5mm jack, so it is useless for music, phone calls, or any device without that specific connector.
• Pick Sony Genuine Replacement Ear if you are refreshing a worn pair of Sony studio cans you already love.
• Pick HYS 2.5mm if you work events, security, or field operations and need to hear radio traffic privately.
This is a straightforward factory part. You get two pieces — one pair — of original Sony ear pads in Sony's own packaging with a printed label. The construction is leatherette over a foam core, finished in black, and the measurements are specific: roughly 98mm by 75mm outside and 60mm by 34mm inside. That inner opening matters because it is cut for the oval cups on the MDR-7506 family, not for a generic round pad.
The fitment list is short and deliberate: MDR-7506, MDR-V6, MDR-CD900ST and MDR-V7. Sony also states plainly which models these pads will not fit — the MDR-V600, V900, V7509 and Z600. That kind of negative disclosure is rare and useful. Before you buy anything, check the model number printed on your headband. If it matches the list, you are set; if it does not, this is the wrong part no matter how similar the cups look.
HYS 2.5mm: Who It's For
The HYS 2.5mm is a different animal entirely. It is a listen-only earpiece — receive-only, meaning audio goes in and nothing goes out. The kit includes the earpiece assembly with a 2.5mm right-angle plug, a flexible transparent acoustic tube, and one pair of medium earmolds sized for left and right ears. The open-frame earmold design is intentional: it lets ambient sound through, which is what you want when you still need to hear what is happening around you while a dispatcher talks in your ear.
The audio specs are modest on purpose. Speaker size is 16mm, frequency response is listed both as 20–20,000 Hz for the driver and 200–5,000 Hz for the acoustic path, sensitivity around 84dB, sound pressure level 90dB ±3dB, impedance 90 Ω ±10%, and output 100mW. That is voice-band tuning, not hi-fi. Speech comes through clearly; music would sound thin. The cable is polyurethane-jacketed with a Kevlar filling and is stated to comply with ROHS 2.0, which speaks to field durability rather than desk use. The 2.5mm connector is the standard jack on shoulder mics and speaker mics for Motorola, Kenwood, Icom, Vertex, Ritron, Uniden, Midland and Maxon units.
Who should buy it? Security teams, event and fairground staff, fire and EMS personnel, and anyone who wears a radio with a mic clipped to a shirt or shoulder and wants to hear traffic without broadcasting it to the room. Who should skip it? Anyone whose radio uses a different jack, anyone who needs to transmit through the earpiece, and anyone shopping for music listening. It is a professional communications accessory, and it is honest about that.
• Restoring worn Sony studio headphones → Sony Genuine Replacement Ear. Nothing else on this page does that job.
• Private radio monitoring at work → HYS 2.5mm. It is built for exactly that scenario.
• Guaranteed fitment → Sony Genuine Replacement Ear, but only if your model is MDR-7506, MDR-V6, MDR-V7 or MDR-CD900ST.
• Widest device compatibility → HYS 2.5mm, which works with any radio or speaker mic carrying a 2.5mm audio jack.
• Ambient awareness while listening → HYS 2.5mm. The open-frame earmold is designed to let outside sound in; sealed Sony pads do the opposite.
• Music and critical listening → Sony Genuine Replacement Ear, assuming you pair it with the right headphones. The HYS is voice-band only.
• Comfort and hygiene over long shifts → HYS 2.5mm, with hypoallergenic earmolds and a lightweight in-ear fit.
• One pair, one job → both. Each listing is a two-piece set, and neither is a universal substitute for the other.
I would buy the Sony Genuine Replacement Ear if I already owned a pair of MDR-7506, V6, V7 or CD900ST headphones with tired pads — it is the correct, no-guesswork fix, and the negative fitment list means I can verify compatibility in ten seconds. I would buy the HYS 2.5mm if my job involved a radio and a shoulder mic, because it solves a problem the Sony pads cannot even address. In my opinion, most people searching this comparison own one of these two situations already and should follow that, not the marketing. If you are still deciding, check the current price on Amazon and let your actual gear make the call.
what is ear pieces
An "ear piece" is the part of a headset or radio setup that delivers sound into your ear. Here that means the leatherette-and-foam cushion that sits on a Sony headphone cup, or the acoustic-tube earpiece that carries radio audio to your ear from a shoulder mic.
what are ear pieces for singers
Singers use in-ear monitors fed by a wireless pack, which is a different category from both products here. The HYS 2.5mm is receive-only and tuned for voice band, and the Sony pads are a fitment part for studio headphones — neither is a stage monitor system.
what are ear pieces
In general use, earpieces are the replaceable or removable ear-contact components of a listening device. On the Sony side, that is a pair of genuine replacement cushions; on the HYS side, it is an earpiece plus a pair of medium left-and-right earmolds.
what do the earpieces in singers ears do
They deliver a controlled personal mix so the performer hears the music clearly over stage noise. The HYS 2.5mm serves a similar practical goal for radio users — private listening without others overhearing — but it is a communications tool, not a monitoring system for musicians.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.
See also: commountain 3.5mm vs Generic 2-Way: Ear Pieces, Hawk Scope Open-Ear 3.5mm vs Transformers Official Bumblebee, HAOMUK Replacement Ear Pads vs KODAPAGE Replacement Ear Pads