Hi, this week I was able to listen to 4 amplifiers (Tact 2175, NAD 352, MF A5 and Unison Unico) connected to JMlabs Cobalt 816 (I have 815). The Tact wasn't a good match for the JMlabs, sounded really flat, the Nad was not bad but the Unison and MF were really great. Both have good reviews, the MF has a Home theatre direct switch which is really handy, but is almost twice the price of the Unison. Does anyone have any experience with these amplifiers? Thanks Rudy PS I now play with a NAD 760 + NAD 3225 for stereo channels.