How many tube watts for Vandersteen 2's?

I think the S30 would not be a good match, very different kind of amps in terms of delivering current. I think you would need M60s and maybe even Speltz autoformers to drive Vandersteens with the lower powered Atma-spheres, but expecially the S30 - not ideal, I would think.

Thanks Pubul57. Good to know since I would have bought them had they shown up at a decent price. the M60's generate too much heat, I've read. I live basically in the desert, so no go.

Back to your original question though, and already answered, if you like the sound VTLs (what's not to like)85 watts is enough watts:)

I had not noticed this reference on Roger's website before, but somewhat relevant:

"The RM-10 came into being in early 1990, when I noticed I rarely played music above a few watts on my Vandersteen 2C speakers."

Hmmm.

Banquo363, a 20' X 35' requires something serious to pressurize the room the way some require. You did use the word, moderate, so I would say it comes down to how much of a headbanger you are.

I agree with Paul's comments regarding the RM10, and he and Rnadell on Music Reference amps in general. If you can buy an RM10 for $1550, in my opinion, that has to be one of THE flat out biggest bargains in high-end audio.

In my experience, there's far more to how a loudspeaker and amp couple than just watts. People will throw a lot of other numbers and specifications out there, but I'd say oftentimes need to give the match a try, as some surprising things can happen. I would have honestly scoffed at someone suggesting I listen to a physically diminutive 35 wpc EL84 based tube amplifier with the Vandersteen 2s before hearing what I previously described. Shows you how much I know...