Recommended Speaker List for Atma-Sphere OTL Amplifiers.

I played a pair of Zu Union speakers with my MA-1's/MP-3, the results were incredible. They came close to my Vandy Treo's.
I don't have the M-60's but wonder if a pair of Zero's would allow you to use them with the Treo's?
In any case, Ralph makes a heck of an amp/preamp.
Bob

My comment got deleted.

All I did was mention Chinese/Russian tubes that are installed in the Atma products.
How does that offend anyone/break the Audiogon rules?
B

@OP,

Just a side note one of the reason's I bought them is because of your continued support in the audio world and to us the customers (even buying used) its rather nice to see in this day and age. Thank you.

Funny you should mention this, but that is how I came to buy Atmasphere products, as well.
B

Ha, 
Just got another email deleting my post.
It seems mentioning tubes from certain countries causes the moderators to delete a post.
Of course, no direct reason given.
B

@glennewdick,
Good to hear the amps are working and exceeding your expectations.
If I recall correctly, the 3.3 upgrade is significant. And, upgrading to the V caps is also significant.
Just something to consider...
Bob

 @gwng8,
 I hope Ralph (atmasphere) responds. If not, you can always PM him.
I own a pair of MA-1's and have found them to be the most remarkable amps providing unmatched sonics as well as reliable, trouble free performance.
Go to his website, he has some good pages on his design.
As far as OTL inconvenience, there were earlier designs (Futterman, I believe), that were known to be problematic. Ralph's design improves upon this and makes his amps essentially bullet proof.
B