How many tube watts for Vandersteen 2's?


In an 8 x 12 room for jazz, female vocalists at moderate volumes how many watts? Is a VTL IT-85 enough, I'm using a YBA Integre right now and it seems okay but I would like to try tubes
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The discount price was never listed on the site, but Roger announced on his Audiocircle forum, and it was confirmed when called 2-3 months ago.
IME 60 watts in plenty for the Vandersteen 2s. They are easy to drive with most tube amplifiers. In the case of the M-60 you don't need the ZEROs, in the case of the S-30 I recommend trying it both ways and see.
I had Vandersteen 2C Sigs powered by a 45wpc CJ CAV 50 and this was plenty for them.
Well, I just bought a RM-10. So, I'll see very soon whether 35 tube watts can drive the vandies in a sizable room. Fingers crossed. Will report back.
I have the Vandersteen 2CE Signature II and I was driving it with the NAD 2100 that are set to Bridge (mono) at 300wpc. The sound is awesome and I love it. BUT, when change the NAD to my old McIntosh 2100 rated at 105wpc in stereo mode, the sound became more alive as in the low bass is a lot fatter and more natural and cleaner mids and highs. But if I or you guys can get a tube amp, it will even sound better I mean a lot better.