I think I was the one who mentioned it as a headphone amp. I bought it out of curiosity. Originally I tried it between my AES/Cary preamp and Omega TS33 speakers. I then used it between my walkman and headphones when I was staying in a hotel. I'm now using it at home for my headphones out of the auxilliary output on my pre (no headphone output) and I'm very happy with it. It has a minijack. I got the the adapter at ratshack for $3.