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RE: Yes, even Pass Labs Class A get hot....

I understand what you are saying....

But "hot to the touch" is not the issue. It's the total amount of heat dissipated by the amp. And Class A amps put out a lot of heat for the small amount of audio power they produce.

An amp that is dissipating 250watts in heat across large massive heat sinks may not feel "hot to the touch" in any particular spot but it is still dissipating 250watts.

That same amp design with a much smaller heat sink will feel hotter "to the touch" but that doesn't mean it's putting out more heat. It's still 250watts in this example.

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