Can anyone point me to a wideband Class A?

[Folding time]

Found a really old Nelson Class A amplifier that has some protection against short circuit and a nice 0-500khz response. However it uses some really old parts from the 70s. I can't seem to get the ones I found as replacements to work in simulation. Is there any easy amps you guys know for about 20 watts covering that range?

 

[Audioguru]

A class-A amplifier makes A LOT of heat all the time, even when it is not playing sounds.
500kHz is a radio wave that is far higher than sound or ultrasonic waves.
20W is not loud unless it plays continuously at full blast close to you.

 

[Folding time]

I understand. Its on 10 minutes then off for cool down and on 10 more minutes. With as far as I need to go with cooling. Altho some do reach that territory no? https://www.passdiy.com/project/amplifiers/construct-a-class-a-amplifier

 

[bertus]

Hello,

The DoZ (Death of Zen) on ESP is based on the Nelson Pass design.
ESP has a good description of the "new" project:
https://sound-au.com/project36.htm

Bertus

 

[Folding time]

Awesome, thank you. I need to simulate to get it in my head as I think I'm pretty new.