For those of you using Atma-sphere amps, I recommend you try the RAM/Labs 6AS7GA Roger is selling. They are GE labelled and they do say "Made in the USA" so I doubt they are Russian and I have no idea when they were made. A really fantastic tube with my M-60s. I think he is selling them for $35/pc and as you can impagine EXTREMELY well matched. I don't know if Ralph has tried these or what he thinks of them, but they do sound awfully good.
What speakers match well with Atma Sphere?
I'm considering the switch to Atma Sphere M60's tube mono blocks. As much as I love my Pass Lab X600's, as a renter who has had to move three times in two years, they are a pain to move. However, my current speakers are Dynaudio Contour 3.3 (4 ohms) which require a lot of power. My understanding of the Atma Sphere M60's are they perform well with 8 to 16 ohms speakers. So what would be an excellent speaker in the $3000 -$4000 (used) range?