Building the most basic possible bass guitar headphone amp

I built a thing to practice bass without bothering the neighbors. I put my videos on Peertube because it respects my freedoms. If you're unfamiliar with the platform, but want to keep up with new videos by email, please see my instructions here: https://diode.zone/videos/watch/ef5fbc81-d2d4-404e-a5d9-045e76a55135