Dan's Data has posted a review on the BitHead BSB headphone amplifier
The HeadRoom BitHead is a headphone amplifier with a difference. Not only can it drive up to two sets of headphones to respectable volume from the weediest portable-player analogue input, but it also works as a USB audio device, for plug-and-go audiophile convenience on any modern PC or Mac.Read more
I like it a lot.
