Well I stumbled across this very old McIntosh MC225 and thought I would give it a spin in my theater. I am using a Niles HDL-6 High Definition speaker selector hooked up in reverse to easily (but very carefully) switch back and forth between the MC225 and my current QSC EX1250 THX main front speaker amp. After careful listening of 2-channel source material and some readings using the IVIE IE-30A Audio Analyzer (pictured on-top of the selector switch), I must say I am quite impressed with how well this very old tube amp sounds matched up to my Totem Model-1 Signature speakers. Next I am thinking about picking up a Rotel RBM 1077 (sort of digital) amp and see how it compares. Wonder what this McIntosh amp is worth these days?????