Adjustable Amp Voltage

[Papa Jim]

I want to build a chassis to experiment with modifying and building different amps onto. Extra switch selectable wired up paralleled sockets for quick preamp tube comparisons, adjustable NFB, adjustable B+ voltage, etc. etc. Is there any downside other than space required to use pots for B+ voltage changing, and NFB  values?

[Ritchie200]

Papa Jim

Sounds like you are ready to get serious.  Check here for some ideas.

Jim

https://el34world.com/Forum/index.php?topic=15445.0

[jjasilli]

Maybe a breadboard instead of a chassis.


Weber sells a PT with a variety of secondary voltages.  You could also use a variable bench power supply.  The downside is that exact tranny selection will affect amp performance & tone.