As good as they are as a stereo amp (and they are very, very good), the Bel Canto's should really be used in bridged mono configuration if you want to hear what they are capable of. Their circuit topology isn't really well suited to one-per-channel use, not compared to what it can do in bridged differential mode anyway. Kind of like the improvement going from the Pass Aleph to the X series, come to think of it (which is gigantic, IMO).
digital amps
did anyone compared spectron musician2 , tact millenium ,belcanto evo4, to pass labs, cary v12,or other high end amps.what do they need for input(analog and digital)please give any input on that matter.thanks