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

The manual for the Aleph 30 indicates that it draws about 200 watts from the wall outlet, which as can be expected for a Class A amplifier remains essentially constant regardless of volume level.

Therefore it will put approximately the same amount of heat into the room as two 100 watt light bulbs. As a rough ballpark guess, I suspect that your Almarro draws in the vicinity of one-third of that amount, or perhaps a bit less.

Regards,
-- Al

I'm running a 30 watt class A all tube integrated amp. It gets hot to the touch, but won't keep me warm in the winter.

I just went from a 300b SET integrated amp to a SS Class A integrated and the heat is about the same.
Hope this helps.

Thanks for the responses. Two 100W light bulbs: that puts it into perspective (although an idle Class A SS amp is not as efficient as a light bulb <- sad). Too hot to touch, but not putting out a significant amount of heat into a decent sized living room.

Almarro states power consumption of its 18 WPC A318B 300b SET at 260W, so assuming the same efficiency my A205A is drawing about 70W at the wall -- roughly 1/3 of 200W just like you said, Al.

Anyway, I guess the numbers from Pass and Almarro gives us an idea...

Pass: 30W/200W = 15%
Almarro: 18W/260W = 6.9%

Class A SS wins on efficiency in this case.

My Almarro A318B draws 250w and it put out enough heat to warm a house:)
It seems a lot hotter than two 125w light bulbs.