I tried this:
A-S2200
(I changed the Tone Control settings to: Flat (Bass and Treble at 50%). While playing music (at 94db) in a 67° room; the Amplifier ran a bit cooler. Left heat-sink 95° and right heat-sink 92° (temperature taken after 35-minutes of music-playing).
But; I believe I've heard some distortion. I went back to the Tone Controls set to: Bass at 50% and Treble at max. I know it'll run warmer at the heat-sinks; but it'll play louder. (like many have said: "a little heat-sink warmth won't the Amplifier")
I'm basically done.
Thanks to everyone for their help and insite.