Thanks for the replies and welcomes. I won't be cranking any Ozzy, and I'm in a spare bedroom. I listen to a broad range of music from bebop to 60s psychedelia, but never at very loud volumes. My 6s were recapped about a year ago, and they sound great through my little cap-coupled Marantz and Pioneer receivers (26wpc). However, I noticed recently when hooking them up to a 45wpc Sony STR-6060, the 6s really opened up and sound stage really opened up too. It seemed to deliver a much larger range top to bottom. I really love these. I've got them hooked up to a Pilot 240 right now and they sound pretty good.