This is for a cheapie. I am retasking an old radio, and have some other parts to integrate. I've been chewing on what kind of preamp to build for a 6AK6 SE 1 watter from an old radio. I'd prefer to just leave the power tube config as is as starting point, but beef up a preamp to feed it. Integral to this radio I'd like to use: Existing chassis, the Power transformer, 6AK6, 12AX7 and 6X4 (I also have a solid state 6x4 to play with) The radio as configured had 1.8A of 6.3 filament draw, so plenty amperage to run two or even three 12A*7' plus the 6AK6. With the low voltage PS, I don't want to leave it as a clear only amp, but for it to have enough gain to get a sweet overdrive lead tone as well. I'm considering a bassman style preamp based on looking at the 6G6B which looks to have lower voltages, but enough gain stages to both use a full tone stack and dial up the OD. I don't however have any personal experience with the 6G6B. A couple youtube vids seem to demonstrate it has good OD capability. Good idea? Or what alternatives? image is of the radio's PS. untapped subsequent RC stepping to lower voltages isn't appropriate since the voltages sent to the rest of the tubes is 115V and lower. I am not sure what's up with the 1000pf cap in the line... perhaps a high frequency bleeder? I'm also not quite sure how to interpret the 6.3V PT output circuit. Is it OK to just reconfigure with an artificial CT and parallel to the tubes? EDIT: and of course will add modcons to the incoming wall supplied AC including a fuse and grounded chassis!