I have enjoyed AR equipment for many years. Started with a modded LS-16 by The Great Northern Sound Company (Steve Huntley- fantastic preamp that comes in handy on occasion) then a phono PH-6 that I sold. I have a pair of mono AR amps (vm-220) that have 12 tubes per channel. I take them out to use during the winter because it gets too warm in my California listening room during the summer months. I just re-tubed with 6550s (4 matched quads) from AR - good timing! I was going to list them this Summer, but now AR is no more.