Does Pass Aleph 3 heat up the room like tube amp?

Kentchai, Plinius now makes class A/B amps that they claim sound "frighteningly close" (see their website) to their Class A amps.

I own a Plinius SA 201 and it sounds great to me. I have not been able to compare it to their Class A amps. To my ear its sound falls on the warm, musical side of the spectrum, which is what I think you are looking for with a class A amp. It runs warm but not hot.

I changed from an Aleph 3 to a 22watt SET, now that is hot. The Aleph 3 you can put your hand on for 10-15 seconds, the SET less. The SET in practice produces far more heat, it is useable, with some discomfort, in the Summer. I never kept either on all the time. The SET of course you would'nt and I agree with Truman, the Aleph 3,warms up to a good performance, quickly.

I absolutely do'nt want to reopen arguments about world resources, but personally, I find it difficult to waste electricity, sourced from fossil fuels, leaving a class A amp on all the time. Other people think differently I know, that's up to them

David,

My Diavolo 13 watt Set is probably not as hot as your Viva.
How does the ALeph 3 sound compared to the Viva?

No comparison I am afraid. I loved the Aleph 3, but the Viva outperforms it in every area, except electricity consumption. Better control of the speakers, more transparent, better base, more neutral. Mind you it should be better, it is more than twice the price, although it does include an active Pre of course

David,

That's the answer I am afriad to hear. When I first bought the Diavolo, I didn't feel like it was a significant improvement over my old Bottlehead 300B amps. Everything was better but only marginal. Last night, I swapped in my old amps for a listen, it was pretty unlistenable.

Now I am concern that SS amp will be much worse that I am spoiled!