Hi all,
I got a Randall Rg100G3 Plus for free and I want to try to modify the sound of this amp.  I want to add a Ecc83 preamp tube. I got the schematic from Randall and I thought to "cut and paste" a parte of the preamp circuit...

I'm still completing the soldering and do the test in a few days. What do you think about this idea? Everyone tried this before?

Thanks for your suggestions 

Hi all,
I'm looking for RG100G3 Plus preamp schematic. The schematic I found on this forum doesn't correspond to the PCB. The board code is RG75G3-A...

Thanks a lot to all who can help