Will this 2A3 PSE work?

[kianbach]

Thoughts on this please.Will it work and if not,why not?.I've already built it.Just wondering if there are any improvements I could make.

 

[analog_sa]

The first stage appears to be missing the anode resistor

 

[kianbach]

I was hoping someone could give me a value for this.I was thinking somewhere between 22k and 47k.

 

[kmtang]

Hi Kianbach,

If you like to get higher power output, I would suggest you go for the 300B instead running the 2A3 in parallel.

There are lot's of famous PSE schematics like Audio Notes around that you could use.

Johnny

 

[kmtang]

Audio Note PSE 2A3

Here is the schematic. It is much more complicated to drive the parallet 2A3. Also, the OPT is harder to get.

JOhnny

 

[analog_sa]

It is much more complicated to drive the parallet 2A3. Also, the OPT is harder to get.

You're absolutely right. And it doesn't sound that good. I would never understand why not use a more powerful tube or even go for PP if power is important.

 

[audiodesign]

new 2a3

http://www.audiodesignguide.com/New2A3/new2A3.html