Four years ago, after acquiring Atma Sphere M-60 amplifiers for my Quad 2912 speakers I have posted the following comment on audioreview site.
"After various solid state and tubes amplifiers (including all Quads, several Jadis and McIntosh etc) M60 amplification is a huge improvement in my system ! My overall impression is: everything sounds MUCH more realistic, there are MUCH more details, there’s no coloration of any kind, voices are so natural, every single sound can be perceived. You can actually mentally concentrate your attention on each instrument or just listen the whole scene in an organic way. In a sense, you can ”see” music both in microscopic details and as a whole picture at the same time. So, the first impression on listening OTL amplifiers is surprising. The sound is different compared to "classic" tube amplifiers, but it is also different compared to solid-state amplifiers. You may need a few minutes to adapt your ears to this new level of perception. M-60 MK 3 reunite the richness of details carracterristic for solid state amplification, and musicality characteristic for tube sound."
I still stand behind those words as M-60 provides exceptionnal instrument separation. Particularly on electrostatic speakers. Recently Atma Sphere has came up with Class D amplfier that sounds surprisingly simmilar to M-60.
So if anyone is looking for better instrument separation, a greater transparancy, more details... I highly recommend to test these exceptionnal Made in USA products. I’m french, we have many fine amplifiers here, but I still have to find any amplifier in any budget that sounds better.
Also, do not neglect the importance of better source. Room treatement may help a lot, but essentialy better electronics are critical for better sound, in my humble opinion
Yeah but…
Move your speakers back against the wall.
And see how it sounds.
I would take the M60s in a heart beat, but I but the old amp with the correct speaker location is better than the M60s in a rotten position and rotten room.
And we are trying to figure out if the speakers are positioned right before questioning the amp.
But I am kind of envious of your amp(s).