atma sphere ma60mkii and revel studios

No way. The amps are good. The speakers are good. The amps and speakers are not good together.

Jtinn,

Are you saying that even with impedance issues resolved by the ZERO autoformers there would still be a lack of synergy between the two products?

The speakers are 87dB sensitive. With an autoformer the 3 ohm impedance issue would effectively be nulled. You still have a 60 watt amp driving 87db speakers.

Not enough.

As someone who tried the Zero Autoformers with my AtmaSphere M60s, they are not a very good option, in my experience.

Yes, they allow the OTL amps to see a higher impedance. Yes, the allow the amps to drive a speaker they would not normally mate well with. No, they do not make good sound. The MAGIC of the Atmas are that there is life and soul to the music, combining the best of what solid state(speed, clarity, frequency extension) and tubes(reality, presence, beauty) and remove the tube part of the equation.

We found the sound in my system and my friends to be bleached out and very white sounding, in addition to having a tendency to become overdamped. At that point, why wouldn't you just use a solid state amp?

I think the ZEROs are very much case dependant. I had fabulous results with mine on a previous set of speakers. The speakers used were N.E.A.R. 50Me II's with a nominal rating of 8 ohms. They are rated at 87dB and the M-60's drove them exquisitely in a large room.

My current speakers have a higher impedance and are better served by using XLO Signature Shotgun cables.