Guitar Gear Forum

Hi does anyone have any information/schematic on the Jet City's vintage mod for both the normal and overdrive channels? I know that Jet City offers that as part of their custom orders. I was hoping to do the mod myself, or get a tech to do it, on my JCA50H if it was too complicated.

Thanks in advance.

Hi Tommy - sorry I missed this until just now.

I've been looking into this, myself. Was hoping to find a schematic for the 20HV to see what JetCity/Soldano did, but have had no luck. I've got schematics for everything they put out but that one...

I'm wondering if they cut gain by reducing the plate resistors from 220k on V1 and/or V3 and maybe adjusted the slope resistor or something along those lines. It'd certainly be cool to know.