Anyone know anything about this? I understand its a division of ART. Looking for an inexpensive 4 channel headphone amp and saw this on ebay. Thanks.

I plan on purchasing a marantz PMD670 or a Fostex FR-2 and I'll Be needing a dual channel or 2 single channel battery powered preamps.

Also I'd like to get a CLEAN uncolored headphone amp... My budget would be pretty tight so spending 1300$ on a reference headphone amp is sorta out of the question.

What do I need to keep in mind when picking a headphone amp? I'm looking for something that allows separate mixes, and not just separate levels of a single stereo mix.

Is headphone impedance important (I know it is in matching live speakers to amps, I figure the same physics apply to headphones)? I am confused by the dizzying variety of impedance levels, and the impact they have.

Ok, I'm ignormarant. Help me out someone. Please :) . What's a headphone amp for?
Thanks. :w: