I heard these at my local dealer this weekend. They are class A selectable I think to 100w and sound great but they are space heaters and they weigh 167#. My room is large and lower level so heat shouldn't be an issue. Shengya makes a smaller/lighter model the MPS300...monoblocks as well and class A and very inexpensive. Basically the same specs as the 600s...not sure of the details. The guys at the shop A/B'd them against the Classes, the big Krells, the Levinsons and Chords...and they said the Shengyas bettered them all. Sounds like another amp to add to the list to replace my 501s..
