BAT VK-60se vs Atma-Sphere M60 mkIII

The Atma-Sphere M-60 is a great amp and I would recommend it, but not for the Avalon Eidolon speakers. For the Eidolons, you need to consider the Atma-Sphere MA-1 or MA-2. The M-60 will not match well to the 4 ohm nominal (3.6 ohm minimum) impedance of the Eidolons.

I run Eidolons with Atma-Sphere, but with the MA-2. This is a marvelous combination.

The BAT 60 watt amp similarly will be underpowered for the Eidolon, but with different sets of issues.
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Rushton, always enjoy reading your responses. Do you have any speaker recommendations for the M-60?

Thanks Rushton,

I already own the Eidolon's and run with ARC Ref 210s.

Have been thinking about switching some things around - for the M60s, would smaller speakers - 8 ohms be more appropriate?

One of the great combos with the Atma-sphere M60s is the Merlin VSMs. My feeling is that if an OTL is matched with a speaker that works well with OTL it is pretty hard to beat with transformer coupled tube amps.