Atma-sphere M60 II.3-Any good for 4 ohm speaker?

What speakers are you getting "711"? I thought you had the Reimers. Are you changing these or, just adding some "furniture" to another room?

I have 3 pair of Cornwalls(modded)now, the Reimers will be here in 2 weeks or so. I only have 1 room to play, so I combine 1 rack for HT, 1 Rack for 2 channel. Mucho eq in and out on a constant basis, hopefully to stop soon. Revolving door getting to time consuming to enjoy the MUSIC.

Does anyone have any experience with MA-1 11.3 and Dunlavy SC-4a speakers? They are also 4 ohms, 91db and pretty stable.
Jeff

Jwin, I've not heard this combination, but they might work depending on the minimum impedance, how smooth the impedance curve is, and the characteristics of the bass driver. Adding a "Zero" autoformer might be useful. The best answer would come from Atma-Sphere. If you call or email Ralph, he can tell you if he has customers using this combination successfully.

What I can say is that the Atma-Sphere MA-1 Mk.II is a stunning amplifier in its neutrality, transparency, speed and (with complementary speakers) tremendous bass control and impact. This is coupled with exceptionally truthful rendering of harmonic overtones and an overall musicality that is instantly addictive. Good Luck!
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Thanks Rushton. The impedance of the Dunlays is pretty flat. It ranges from 3 ohms to 7.5 ohms max. Wouldn't a zero autoformer put a transformer in the circuit of the OTL design?
Jeff