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Zu speakers with Atma-Sphere M60 amplifiers

I own the latest version of the Atma-Sphere M60 amplifiers. Arriving soon are a pair of Zu Definition speakers. Does anyone here have any experience driving the Definitions with the Atma-Sphere M60 amps. Observations are most welcome. I am given to understand the Definitions are approximately 6 ohms. I'm hopeful this will still work satisfactorily.
frontier1
audiofeil
4,011 posts
 
You can safely remove output tubes from each amplifier to reduce power output and heat.

Good luck.

Dealer disclaimer.
mrderrick
292 posts
 
If you have to much gain (very little volume control) you can also replace V2 with a jumper plug to lower the amps gain. I run Avantgarde Duo Omegas with M60s with only 4 tubes per amp and V2 jumper-ed out. Atma-Sphere can set you up with a pair of plugs or you can DIY them if needed.
keithr
1,306 posts
 
you might ask Zu (Sean) to make sure the impedance is correct for OTLs---as I recall, you can have this adjusted at the factory.
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frontier1 OP
42 posts
 
Hi folks:

Thanks for the guidance here. I know the factory can implement a mod that increases the impedance but I thought that if I changed amps for any reason, the factory configuration would be more forgiving with most other amplifiers. I'm happy to hear the M60s will drive these speakers adequately.
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