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How long does Class A have?

Hi Guys/Gals
 I have a Sugden A21SE which is a Pure Class A single ended design, I absolutely love this musical amplifier with its strangely plentiful 30wpc, it runs hots as they do, I always enjoy watching the faces of my uninitiated friends when they touch it after I mention they get hot, lol.
But in this modern green era I wonder just how long do Class A amplifiers have before Greta Thunberg gets wind of this inefficient method of creating sound and pisses on the parade?

Thoughts?
mrmeaner
imhififan's avatar
imhififan
2,130 posts
 
holmz
As my amps run on 230v I guess they draw 1/2 the current and 1/2 the power?
If your amp can run on 230V or 115V, it will consume the same amount of power on 230V or 115V. 
P = V x I
That's why switch to 230V mains will draw 1/2 the current of 115V mains,  and you need to install correct rating fuse accordingly for proper protection!

http://pumred.fullrange.kr/2019/04/0416_parasound_hint_6_halo/0416_parasound_hint_6_halo_07.jpg




 


phd
1,282 posts
 
How long does Class A have? Until the price of delivering electricity sky-rockets, where is Tesla's free energy when you need it?
samac's avatar
samac
492 posts
 
How long does Class A have? ‘Till the cows come home.

Cheers ,

Scott
perkri
891 posts
 
Oh, and I guess I shouldn't bother building the DIY Audio VFet class A amp I have sitting here waiting to be assembled...
rudyb
141 posts
 
My Duson A10 runs hot too.
https://www.pinterest.com/pin/455567318526910810/
At first I left it switched on 24/7 to spare it the heat cycles and hopefully prolonge its life span. It’s 30 years old now and still going strong but I do switch it off now for energy sake. Also I use headphones on a Bluesound node while leaving the amps off more often, but that’s just being lazy.
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