Oh, Good Lord yes. I've got a stacked pair from PK and used a Dynaco from Cleby (35 per side) for about a week. Didn't beat my Audio Valves (which were in the shop, but without too much EQ from my TACT, and staying away from Nugent and Mahler, the little critter was fine.
You know, Quads just get deceptively loud due to their lack of distortion, so if you're really looking for impact, either stack them or maybe even go dynamic. After 30 years, I'm back with PK's Quad 57's and appreciate their limitations, because what they do well, they do so well!! A second system has to handle the AC/DC and Ramones.
I expect you'll really like the Quads and Triodes. I would stay with p/p amps if you're shopping, although some SE's are happy with Quads.