Hello Eric, you might have been referring to the first class D generation ROwland M201 or M501 monos.... M 501 sounded to me powerful but uninspiring no matter break-in and/or warmup.... M201 tended to run out of steam.... I heard them at length at a dealer, and then again at RMAF, where I also heard the M312.... AT RMAF the three amps were powering a pair of VIenna Acoustics Mahler.... M201 and M501 sounded like interesting experiments, but they were rather uninvolving.... Then They connected the M312 stereo, and.... I fell in love! Soon M312 replaced my beloved golden toned Rowland 7M class A/B high bias monoblocks.
The logical successor of M501 was the M525, which I have not heard.... Third party reports were that while it did deliver a more emotional presentation than M501, it still sounded a little "non-denominational"... M525 was recently replaced by the bridgeable M535, which I have in my system. As already mentioned a few times on this thread, it delivers the emotional goods in spades... is an extraordinary amp under all audible parameters that I can think of.
G.
