@roxy54 You are correct, the theater set-up will be through a theater amp including the Nestorovic speakers, and the Nestorovic amp used to power just the Nestorovic speakers in a 2-channel system. I'm researching switches but leaning hard toward selling the Nestorovic amps, but the final decision will be made after we experience a few 2-channel listening sessions and figure out what price those amps might fetch. As for the prep for the tube amps @audioconnection is a Variac in line to provide exact voltage really necessary to run these puppies? I received other advice to go through and check all the capacitors to be sure they don't blow the speakers if one happens to go bad (it seems a bad cap would result in an annoying hum, not a catastrophic fail.) Cleaning the tubes and some attention to the tube prongs to scrape off corrosion with an x-acto seems reasonable, but anything beyond that increases my inclination to sell them to someone with a passion for the tube world.