There are a number of posts on the MTR 101s, so you might check the archives as well. I used them for a number of years as bass amplifiers for my four-piece system and also heard them at times as full range amps. They are very good pieces, but have a distinct sound tonally that you might or might not like. Very dynamic, excellent soundstage, rich, full and powerful bass reproduction, very rich and lush in the midrange for a solid state design, and rolled off sounding in the highs (some of my friends who heard it felt it did not reproduce the highs accurately, lacking air, I felt they did pretty well, though definitely not prominently, and that other solid state amps were too bright). They are probably not the last word in "transparency" or detail retrieval, I'd guess part of that is the lack of the treble emphasis. Binding posts were a problem, only one spade will fit in there and there is not a lot of room around them because they come right up to the heat sink. The later units used round heat sinks, which looked neat and were actually a very effective and innovative design. I believe that John Wright can update them, though, to bring them up to what he would call state of the art performance, and judging from what he has done with the Meitner Bidat DACs I would tend to believe him.
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