I am very familiar with the PMA and it is a fantastic amp. Denon recently introduced an anniversary amp, I forget the model number, but it sure looks like a VERY slightly modified (cosmetically) PMA, and the specs are identical. The only thing I can see different in the specs is that it weighs 57lbs, where the PMA 2000 IVR was 54lbs. The anniversary amp is $2500. No wonder Denon took the PMA off the U.S. market, they wanted to reintroduce it a year or so later for more than double the price!
Anyway, I think for your 2-channel music, the rig you already have with the PMA is the better option.
Cheers,
John