I wouldn’t pay top dollar if they couldn’t prove the tubes were pretty recent. Expensive to re-tube that amp. I personally wouldn’t pay more than 1000 for any power amp but I get amazing results with my Quad using my MK V as power, so would only want a Boogie P.A. for aesthetic package reasons. I would say in most instances, Pre’s I’ve owned or demo’d sounded better through the returns of heads than power amps but the cool look of 8-10 spaces of Boogie rack that could demolish a HOA meeting cannot be denied...lol