Im not going to reveal too much with this, but ive been working on a mod of the Tritton Ax 720 headset, called, well, the Ax Trinity, im going for comfort, functionality and overall badassness. So far ive successfully added:
USB Powering
Default audio jack input
Default Headphone output
Default L/R audio input
And Made the amp not need power to output audio
I have alot more in mind, but lets not go too deep here. Props go to shadow777666 for funding, but he doesn't know a lick of electronic works so im making it all work >:}
Anyway heres some pics:




(This next picture was the amp being powered by a psp battery, proving that it could run off of the 3 volts that usb devices use)

(And this diode prevents the amp from short circuiting when the usb and dc are plugged in at the same time)