How hot is pure Class A solid state vs. SET?

Al touches on it without being .....explicit.

Heat and temperature are 2 different things. A lit match has a far higher temp than even the most ambitious amp, while 100lb of class 'a' will heat a small house.

So, while the 100watt bulb will burn you try to unscrew it when on, the warm to the touch 'a' amp will actually put out more heat.

As kind of an aside, didn't I read somewhere that a person radiates about as much heat as a 100 watt incandescent?

Also, from the FWIW department, the very high efficiencies quoted for 'd' amps? In the case of the ICE modules 80%+, for the ASP modules at least, is for 'Plug-to-Speaker'. And than only at full power. Lower power is much less efficient, being close to traditional A/B at reasonable levels.
Other 'd' amps may NOT include the PS and quote in the 90s, again a full-tilt.

Magfan, interesting (and good) comments.

As kind of an aside, didn't I read somewhere that a person radiates about as much heat as a 100 watt incandescent?

I hadn't ever read anything about that, but some quick calculations indicate it is correct.

Obviously there will be very large differences among different individuals, but if we assume an average of 2250 calories burned per day (150 pounds x 15 calories per pound), and that as indicated here 1 food calorie corresponds to 4.2 kilojoules = 4.2 kilowatt-seconds, the corresponding power consumption calculates to 109 watts!

Best regards,
-- Al

Sheesh!
When somebody says....'Do the math'! You take them seriously.

And yes, following all those conversions thru......spot on.

For the class 'a' folk, that's why a cabinet or other enclosure is generally a bad idea. Solutions? out there, and maybe one day I'll publish MY solution which not only cools the gear but keeps it clean and away from micro vibrations which some find......disturbing.

I'm sure I'm closer to 120 watts+, while my tiny neice probably barely breaks 75!

In class "A", my Plinius SA 100 MKIII runs quite hot. The faceplate is hot to the touch, the heatsinks are hotter. My EL 34 VAC PA 35.35. doesnt't seem to put out near as much heat.

Dan

I had a class A Musical Fidelity A100 and now have a 300b SET. No contest. The A100 ran much hotter.