Weekend bump. Price reduced to $375 shipped (continental US only, please).
Unfortunately, there is virtually nothing online about this piece (although there is information about the designer, Matt Kamna, if you do a search).
To provide some background, I purchased this piece brand new from Matt after reading his ad on Audiogon. My understanding is that (just for fun) he and some friends set out to design and build a low cost, great sounding remote volume control that would beat out MUCH pricier passive and active preamps. They were not interested in making this a business, but wanted to see what they could achieve at an affordable price point. The unit works and sounds great. I ended up buying a very expensive tube preamp with phono stage, thus the sale.
Again, as I am not particularly technical, I'm not going to be able to advise you about how it works or if it will be compatible with your amp or system. That said, I can email you the manual that came with the unit; this ought to answer your questions.
Will also entertain trades of equal value. Of possible interest to me are a good MM or high output MC cartridge, a record cleaning machine, or decent interconnects and/or power cords. Thanks again for looking.