This is a test for the tiniest guitar amp from kris slyka running at 100V using a power supply idea from a tim williams tube preamp. Cleans. joyo american as preamp and then a MXR boost clone. guitar is a super strat copy, the speaker is a jensen. I don't know how to play. this sound more like a guy that spend more of his time with electronics than practicing guitar. hope you can hear the tone.

kris original video:
https://youtu.be/d0I0SGOYBM0

tim wiliams preamp for the power supply.
https://diyaudioprojects.com/Tubes/12AX7-12AU7-Tube-Preamp/12AU7-Tube-Preamplifier-Schematic.png

the first transformer is center tapped I got 6v from it. and the tap was not connected to ground.

everything was kept the same as kris OG schematics. I just increase the input cap for a better low end response and of course the electrolytic cap must be rated for more than 100v.

this is the conclusion of this project a full all tube low power amp

https://oshwlab.com/otakorp/the-happy-neighbor-amp