How long does Class A have?

Yeah Sugden .. a big fan .. P and C 51’s and also 2 integrated in the Past.

They are energy efficient as they do multiple tasks. Amplification and heating in 1 unit, how good is that !!! Perfect for cold climates, though lets not mention hot locations. These class D things can only do one thing ... pftttt

As others say sling a solar panel or 3 on your roof and you are instantly green and world luv’d .. I have 15Kw burbling along on my roof and am anxiously waiting for the day Batteries are actually cost effective !!

When you think of upgrading look at the Accuphase Class A amps, I now run an A70 behind a Supratek Dual DHT pre, BTW another valve heating unit !!
Long Live Class A and may your Class A amp continue to be a blessing.

Enjoy and stop worrying and dreaming about Greta .. Lol ..

Why don't manufacturers list the amount of amps (current) their amplifiers and receivers put out.  It is nothing to do with watts.  It all has to do about current.

I think they hide this number because they know their amplifiers do not produce much current.

Wonder why this group doesn't talk about this?

I wonder what a true blind test would reveal?

As my amps run on 230v I guess they draw 1/2 the current and 1/2 the power?

“The amplifier does not require any maintenance. While the design is conservative, this is a hard running amplifier, as single ended Class A operation is the least efficient operating mode. In fifteen years the electrolytic power supply capacitors will get old. Depending on usage, you will begin to have semiconductor and other failures between 10 and 50 years after date of manufacture. Later, the sun will cool to a white dwarf, and after that the universe will experience heat death.”

- Nelson Pass from my Aleph 1.2 manual