ART HeadAmp4 Four Channel Headphone Amplifier - Reviews
Pros: A ton of outputs, fair SQ, good build quality
Cons: No power switch
Not much to say, really. I needed a multi-output HF amp that would drive most cans. That's what it is. It sounds fine, nothing to write home about, but not bad at all. You aren't going to get huge detail, but it is rather neutral. Doesn't distort unless you crank it far above what is considered a safe listening volume and the pots are quiet. Also, I really like the fact that it accepts 3.5mm and 6.5mm jacks, no adapters to mess with. Oh, it's very solid too, heavier than you'd think from looking at it.

My only real gripe is the lack of a power switch, but it's not a big deal, I just hooked it up to a mini surge strip and use that to turn it off and on. Overall, it's a decent little cheap amp.