Do high dollar mono blocks truly improve the Sound Quality over the mid tier amps

Yes. A more expensive amplifier usually sounds better.  I went through a long series of upgrades of everything, and I can vouch that every component got better…of course, I upgraded with thought, as there are some very expensive components that may not sound better.

 

 

A popular audiophilism is that the shorter the speaker cables the better. Do you think this is a significant issue? Thanks.

IME that is true to an extent. For instance, using 8’ 16 gauge VS a 25’ 16 gauge cable. But a 10’ length of 14 gauge cable is not going to present a significant LCR difference VS a 5’ length of the same cable.

IME, it’s better to put the same money into a higher power and/or better quality stereo amp, just so long as it has decent crosstalk performance, which will be the case for nearly any modern solid state amp and most tube amps as well.

The vast majority of audiophiles are using speakers that in my opinion/experience are undeserving of a high end stereo amp, let alone high end mono blocks. If there’s anything I agree on with Kevin Deal of Upscale Audio, it’s his claim that most audiophiles are using amps with capabilities that exceed their speaker quality.

The best sounding amp(s) I ever owned were a pair of ARC VTM120s.  The only reason I got rid of them is that they could be a bit unreliable.

Without getting into system synergy, and keeping everything else constant, you would likely find it worthwhile to go from Classe to CH. Mostly midrange layering, delicacy in the highs and tightness in the dynamics. You might have to trade a tiny bit of boldness and sheer impact for that refinement and delicacy you would get from CH. However, if you listen to mostly rock and pop, I would not go there. 

Go checkout AGD mono blocks class D Thst kick butt against 

Anything and everything even above their price class .

check out the reviews  and  go. Have a listen .