Boy is Pgbramsen@aol correct! I actually tried all those about three years ago in my attempt to find the "perfect" tuner (the Marantz 10B won!). One only other possibility, and actually is a near contender to the Marantz, was the big Fisher. I think it was called a 1000 or something (all tube). Only other unit besides the Marantz that made you forget about testing, and listen to the tunes.