Analog Tube Power amp simulator: studying possibilities

[Sono]

Could you share preamp schematic?

Sure. It's a simplified Fender AB763. The schem is the preamp with the DI Out. The Astrosim would go in between.

Edit. Looked astrosims schematic. 1M/470K divider before IC and some EQd feedback part to make the amp simulation going there too. I’d try replacing 470k resistor with 1M pot or add 500k pot before 470k resistor to see what it does.

You're talking about R3, correct?

Thanks
Cheers
Sono

 

[JohnnyCreepy]

Sure. It's a simplified Fender AB763. The schem is the preamp with the DI Out. The Astrosim would go in between.
View attachment 117275

Thanks
Cheers
Sono

For my taste and needs 100nF between tube stages is just too much and lets too much lows through which only causes problems. And I play with low tuning. 47uF cathode bypass cap is also one I’d change.

I’d do it like this:
C5 1-4.7uF
C9 20-25uF
C10 10-22nf

Maybe you overload ampsim with low freq content & gain?

 

[Sono]

For my taste and needs 100nF between tube stages is just too much and lets too much lows through which only causes problems. And I play with low tuning. 47uF cathode bypass cap is also one I’d change.

I’d do it like this:
C5 1-4.7uF
C9 20-25uF
C10 10-22nf

Maybe you overload ampsim with low freq content & gain?

Maybe you're right. I'll try what you suggest and report back
Thanks!

 

[Einzeln]

This is the schematic of the Hagerman poweramp.