I was running an McIntosh MC205, but I have really dirty main power. It made the toroidal transformer buzz, as well as most of the preamplifiers and amplifiers in my home.
I'm waiting on a Buckeye NCX500 amp to arrive in the mail, but I also want a tube amplifier to rotate. I am considering a tube amplifier, such as an older Marantz or a newer McIntosh, because it looks retro cool to me, mostly for aesthetic reasons.