How long does Class A have?

Class A Amps are a non issue.

We need more Greta Thunbergs and we need more Class A amps.

Hello,
We just need flywheel generators for our Hifi gear. Then we will be producing our own power for our systems. 1 80lb flywheel produces 1kw of electricity. So we will need several of those for our class A amps. https://www.google.com/search?q=flywheel+generator+free+energy+india&client=safari&hl=en-us&...
Pretty cool huh?

I just purchased a Luxman L-550AXII which is a variation on Class A. The best sounding solid state amp I have owned. And I have several tube amps both for guitars and hifi.

If anything I would say it makes a bit of a come back as we desire better and more organic musical tones.

holmz

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

No, your amp draws the same amount of current at either voltage, all other things being equal.

When I got into Art Center in 1988 to be a car designer, an instructor said to be our class 'I do not want to see manual transmissions in your designs...they will not exist in the year 2000'.

Yet after graduating, every vehicle I bought, I tried to order a manual. Sometimes there wasn't an option. I love manuals and I drive in LA traffic.

Things in the US are market driven. Class A will always exist in some way. You'll always see a Model A Ford driving to a car show...even if it's an EV show. 

I agree that it's very low hanging fruit. We are a drop in the bucket. Other things need to change. And change like this is gradual.