I have 2 BNIB US Amps md-23 amps for sale. I originally planned to run two Fi Q's and two of these amps, along with a matching md-22 for my comps, but I am very tight on money right now and can't complete my project. Everyone knows the quality of these babies. I have yet to test either one, but if you buy it I will test it, and each channel to assure it against DOA. I am thinking about selling these at about $270 shipped as they are pretty heavy. If not, throw me some offers via PM.