Disappointing Audiolab

[Greg.]

But if you alter the operating temperature of mosfets, my understanding is you interfer with their optimum operating point. I thought designs incorporating mosfets include the consideration of operating temperature to establish the values of corresponding components to allow them to work optimally. Sorry, this is probably a bit simplistic, even inaccurate, but I would have thought the addition of external after cooling of a mosfet design would require an understanding on how much hotter than designed the unit was trying to operate at and then a regulation of external fans for cooling to bring them back into their intended operating range. Of course, as I am pretty much an ignoramous on this, what I have written may be absolute rubbish. I’d be interested in any thoughts from someone who knows.