Atma-Sphere MA-1 MK 3.2 (MKIII.2) Monoblocks - can have Ralph Upgrade!

These OTL amps are in excellent functional and cosmetic working order. They put out 140W/ch at 8 ohms and 135W/ch at 4 ohms. One note is that they will NOT come with the upgraded 6SN7s in the pics where the amp is hooked up and will come with their stock Shuguang 6SN7s in the pics where the amp is on the table. The amps will also come with a few spare 6AS7G output tubes. All tubes have been tested with a Mercury Mutual Conductance tube tester and are in strong shape. 


I also have a set of Paul Speltz’ (Anticables) autoformers available at an added price to make these amps shine on harder to drive speakers.

Also, these photos were taken at different times explaining why there are different tube sets on the amps.

I live about 45 min from Atma-Sphere, so if desired, I can drop the monoblocks with Ralph and he can upgrade to 3.3 spec for $1200. With that, you can have a set of 3.3s for $7000+shipping!

Other possible upgrades include the power supply boost and Caddock resistor package. I can provide Ralph’s quotes on those if interested as an “all-in” set of upgrades is cheaper than getting each individually.

I will pay the PayPal fees but You are responsible for paying the insured shipping. Audiogon somehow botched my PayPal integration but i can provide an official PayPal invoice if you prefer PayPal over express checkout. My same listing on USAM has a buy now price with PayPal integration so you can buy from there as well. 

I can post additional photos on request and am happy to answer any questions!