In the newest catalog from Parts Express they have Audio Source Monoblock Amps listed. The Monoblock that catches my eye is the AMP 5.3 which produces 150W @8 Ohm and 250W @4 Ohm 95 DB S/N with a 200 Dampening Factor @ 4 Ohm and a Total Harmonic Distorsion of 0.1% and a Freq Resp of 20hz-20Khz for $235.00 each and they are rack mountable. Anyone know how good these amps are? They have Balanced XLR's as well as unbalanced RCA level inputs, Torodial Transformers, Fan cooled etc.. I was thinking 4 of these coupled to a Tube Line Stage Pre Amp coupled directly to a SACD or DVD-A or high quality CD Player source would make for a great 2 channel only system that would blend in with my HT setup.. Any comments?