60 watt Rogue Tubes for Vandersteen 3A Signatures

I don't think 60 wpc is going to get you sufficient decibel levels for anything much more than moderate listening levels. At "live" volume levels, I think the amp will run out of steam.

I'd opt for Rogue M-150 or M-180 monoblocks for these speakers.

Greetings
Agree with Narrod if you have a nice deal on one
It should be a great starting point with tubes.
Best Johnnyr

I'd want more power than that for Vandy's; just sayin'

I power my 3A Sigs with Vincent ST-800 monoblocks which are a tubed/ss hybrid with 200 w/ch. This works really well. My rule of thumb - tubed power will sound like SS power of twice the watts. So, the 60 tubed watts will sound like 120 watts ss. I don't think that will be enough with the 3A's unless you only listen to chamber music. I would suggest at least 100 tube watts.

My rule is an inch is an inch, and a Watt is a Watt.