Speakers for Atma Sphere M60 mk3

 Devore's play well with Atma-sphere. The Gibbon series are 8ohm with a pretty benign load. 

Just about any speaker that has a flat impedance of at least 8 ohms or preferably 10-12 ohms to work best. Not many speakers have that type of impedance curve but look for a speaker that uses the PHY driver. 

If you like the Maggie sound (planar-magnetic drivers), but know that their 4 ohm-and-below impedance characteristic and very low sensitivity rules out the mighty-fine M60, there is an alternative: the Eminent Technolgy LFT-8b. 8 ohms full range, 11 ohms for the m-p drivers themselves (the 8b includes a sealed box 8" dynamic woofer) if bi-amped (two pair of binding posts are provided). Under $3,000/pr, another grand or so for the LFT-8c, which uses dipole woofers in place of the -8b's standard monopoles (as well as a different crossover and DSP bass management.

Very well reviewed in the UK mags, as well as by Robert E. Greene in TAS. VPI's Harry Weisfeld described the 8b as possessing the best midrange of any loudspeaker he has ever heard. Yet the ET LFT-8b continues to be ignored by the vast majority of audiophiles. ???!!!

OP,

It is very likely if you like the sound of your speakers now , then a high quality tube amp will really make them sound even better. At least to me Mark Levinson is accurate and very polite… but doesn’t communicate the emotion of the music. It has been a long time since I have heard an AtmaSphere amp. But, since I moved to an all tube amp my life has never been the same. I am drawn in to the music.

I own M-60 3.3s, and use Zu Druid Mk Vs. My room is 14 X 30. I have the Druids about 6 feet from the back wall, and they sound amazing.

David