For the past few days I’ve been playing with a home brew IRS2092 based 200W / Ch Class D and a Nelson Pass 5W / Ch Mosfet Class A clone power amp. Apparently this is completely faithful to the original cct.
Using my Quad 34 pre and my 90dB Heco Celan 300 speakers in a tiny room, near field listening.
Whilst by no means scientific (feel free to rip me apart for my lack of technical knowledge), the results amazed / disappointed me.
The Class D Amp absolutely hosed the Class A in every single area, every type of music. Not even close, not in the same universe.
Its quite possible that the pre is a mismatch to the Class A amp, I suppose, or that 5W isn’t enough for 90 dB speakers in a cupboard but what a disappointment.
The Class D also hosed my Snook modded 405-2, my Rega Brio and a Roksan K2 that I borrowed. Was hoping that Class A (maybe this one wasn’t a good choice) would be better.
Tbh, I’m beginning to think that I’ll not better the Class D for do-able money.