I use this with the ADAT ins and out for my Digidesign 002R. It has 8 basic preamps, with an XLR/line in and an out for each of them. The main function of this is to hook it up with the ADAT jacks I believe, using them as external preamps, good for someone with an interface that only has a few inputs and wants extra preamps at a ridiculously cheap price.

OVERALL OPINION

I've had this for about 3 years now and I have used it both with my Digidesign 002R and I used to have a MOTU 896HD and it worked great with both of them, espically with my 002R since it only has 4 preamps on it and to record drums its great to have the option of having 12 preamps instead of just 4. But the thing I like most about this unit is the price. Considering how cheap this is there is no excuse to be without one if you are looking for more preamps on a budget. Obviously these are not the best preamps in the world, but if you are simply looking to have more inputs it won't color the sound too much, and with some good mics it doesn't sound bad at all. Until I upgrade with a few more high end preamps, I'll be holding onto mine for awhile.