ARTcessories HeadAmp 4. Has 4 1/4in channels and 4 1/8 stereo outs wired in parallel. Pretty much brand new and good for studio use or from a mixer. Can provide up to 4 listeners with clean headphone monitering from mixer/PA. Very rugged and sturdy. I will provide a power adapter. PRICE: SOLD As far as trades go, lemme know what you got.