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I keep thinking about the temperature. Whatever the best I heard in Class A was running very very very hot. However, what is the association between sound, heat dissipation design and temperature.  It is obviously that any amplifier designers would like to get more power within smaller package size. More power = more bias current and more parallel transistors, which means more heat during idle operation. Let now to pretend that we have a super high efficiency heat dissipation mechanism that can absorb unlimited amount of heat and that make temperature not a factor. Now we can select a desirable power or output stage without regards to the heating problems. Or let me rephrase: now we can select the power we would like to have and then select the temperature we would like the output stage to operate. Now is the question: what would be with sound if we maintain the same idle current but change the effectiveness of the cooling, from up 30 degree C. to 50 degree C? How about 80 degree C? 100 degree C? How about the different transistors? We limit our views with size and dissipateable temperature but what is it is not a factor and if we have some kinds hypostatical cryogenic coolant cooling down the output stage? The transistors data shits give to us data what happen with transistor at different temperature but it said nothing about it’s sound.  I wonder if anyone had experience to assess this moment and at the same time be able to evaluate sound musically objectively. I obviously have no such experience and I do know anyone who does.

I personally still have a very strong inclination to higher temperature but I have no tangible rational for it. It would be fun to run Zarathustra at different temperature and to see what it will be doing sonically….

The caT

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