Over at Mobility Site they are saying that they will be reviewing a mystery item that can improve the sound of headphones and even MP3 players, god knows how but that is what they are saying.
All we know it is a mod and that by looking at the picture in the right hand corner you can see that it comes from eBay, I am pretty sure that logo is on many eBay images.
Keep up to date with this one over on Mobility Site here. (Hey you guys from Mobility Site, you got any inside info?) When you say more let us know and we will publish so our readers can know about it.