Tiny Versatile 2.5mm Male to 3.5mm Female Adapter with Lock/Unlock Feature : Extremely Versatile for Attachment to headsets/Devices with 2.5mm Audio Port.

I don't have very much to say about this thing. It does what it needs to do and makes your headphones more flexible since it can now use a standard cord vs Sennheiser's custom cord. Had this thing for a few months and haven't ever really had an issue other than it being hard to really secure because of the port on the headphones themselves being hard to latch in. Recommend this!

This is about the only option I've found on Amazon for Sennheiser/KRK adapter headphones to 1/8" non brand cabling. Works just fine for use with gaming & average listening use. Happy to have found it.

Works well, wish the item had better packaging. It's very small and it just comes in a thin bag.

Connected to stennhesier headphones with v moda pro for gaming and it works well. Makes the mic a little long, hangs lower than ideal now but still very cable. This is the smallest adapter I have found

I was hesitant to buy this product because $18.49 seems like an awful lot for a simple adapter. But "buy nice or buy twice," right? I thought that at least the price meant that the product would be made robustly with quality materials. And it worked perfectly—for just over a month. Then I started losing sound in one side of my headphones. Checked the headphones, checked the cable, and confirmed that the problem is with this adapter plug. And this is just with normal use, no pulling or jerking at the plug.I thought, that's okay, products can have defects; I'll get it replaced. But unfortunately I was just outside the window of accepted returns on Amazon for this product (one month). So, I did as you would probably do, and I emailed KOKKIA and asked to exchange or a refund. It's been several days now, and I haven't heard anything back despite their guaranteed 48 hour response.I'm not typically a review kind of person, but I was so unimpressed that I had to warn others. It's an expensive product of cheap quality, and there is terrible customer support. I will be avoiding KOKKIA in the future, and my advice would be for you to do the same.

I purchased in March, and it was dead by December. The first cable I tried using had a loose connection, so I swapped it out and it worked fine for about 6 months until I swapped out again, lasting another 3 months. But now it's finally useless, as the left audio contact no longer works. I'm not convinced I want to spend another $20 (or maybe $20 yearly?!) on hardware that shouldn't be so faulty.

Allows my sennheiser 560 S to work with the v-moda boom pro. This converts the locking 2.5mm port to a 3.5mm female port so my sennheiser can act as a headset. Works well on day 1. I will update my review if it stops working or I have problems, but so far it works exactly how I want it to.Update: still great

I'm glad this adapter exists! The adapter works fine with the vmoda boompro mic and my Sennheiser headphones. It is a little difficult to push in all the way in but it will snap/click-in with a little pressure. Just be careful when you're pulling it out from the headphones because there is a little resistance.