Well, hey -- I don't know of a keeper for life, largely because mine isn't over yet. But, I have had a GAS Grandson AMP (with meters) and matching Thalia pre-amp since they were purchased in 1978 at the Sound Shack in Natrona Heights, Pennsylvania. Now that I'm old enough to have a grandson, I prefer the GAS power amp -- it shuts off when I tell it to do so. But we're downsizing, and won't have room for the old component system. I might part with it so if anyone is interested out there in cyberspace, do send me an e-mail at grabinsky@aol.com