There is always a point of diminishing return on spending more for pretty much anything. For those speakers.you probably hit it for most once you get past $5k for an amp I would estimate.
Is there a point of diminished returns with amps and Harbeth 30.1s?
I’m currently using Herron M1As with my 30.1s and I’ve upgraded the rest of my system (Aries/Fatboy/SUT/DL103r and Lamm pre and phono) and each upgrade has been VERY satisfying. So is it going to be worth spending $5000 or so on the used market to upgrade the Herrons? Any thoughts as to whether I’ve reached the apex of amp/speaker performace for the M30.1s?