Luxman M900u stereo vs Mono setup

Audiodrom gave the m900u/c900u high praise with a score of 87%.

However, they did have this critique:

Notwithstanding all that was said the Luxman combo will most likely not appeal to anyone whose music collection favours rock’n roll. The electric guitar in Sheer Heart Attack (Queen, News of The World) is precise and full through the M-900u and the C-900u, yet it lacks ultimate bite and electrifying presence I heard through the Van Medevoort, for example. I suspect it is a kind of tax for class A as the tonal purity and textural resolution brings (almost) always along the slightest touch of transient roundness. If you like your music hard and aggressive, look elsewhere. 

Hmmm....   I would not fault the Luxman for transient impact and precision, IME.  They seem to bring out all of the startle from my beryllium mid/tweets.  That's part of their attraction, I find.

True the need to run the M900u in mono would be unnecessary if it solely based on a speaker that was easy to drive. I’ve heard the M900u in mono is vastly superior to one in stereo, sonically speaking. 

@hiendmmoe  True the need to run the M900u in mono would be unnecessary if it solely based on a speaker that was easy to drive. I’ve heard the M900u in mono is vastly superior to one in stereo, sonically speaking.

Why seek advice if already have the answer?

+1 Joecasey