Jejaudio, how do you reconcile the fact that amps have a specific optimal operating temperature with your attempt to operate them "cold"? I have numerous amps, all SS a/b. All of them need at least three cuts off the source material to start sounding good. But they all sound best when they're "cookin", so to speak. Well above their warm-up temp. The output transistors need to heat up. You can't even take technical measurements cold. To maintain a constant offset you'd have to literally refrigerate it. An amp has to stay within it's thermal boundaries - to + in order to function within it's design parameters. BTW, how old are you? I mean no disrespect. I just want to add that when I was young(that's actually a tune), I would do literally "anything" in an attempt to improve the sound. I became known as "The Butcher". After considerable destruction and subsequent reflection, I'm now much wiser. From my experience I would say attempting to keep the gear relatively "cold" is not a good idea unless it relates to passive speaker cross-overs, however that's an inherent design issue of a technology who's demise IMO is overdo. Yikes!