I have 5 model 200 monoblocks and am very happy. I noticed that the S/N ratio was 119dB for the 770 and 112dB for the monoblock. If higher S/N is better (quieter?) what would account for the difference? Are the amplifier circuits different between the two? Not that it matters a great deal because I am happy, I have long ICs and short speaker wires, and the amps are paid for and working just fine! Just looking for more understanding...