Here is a really great explanation of how these little amps work:
This guy is more concerned with the visual aesthetics of the caps than the actual function. He never even checked the Sangamos, or the bias resistor. While the amp certainly works, is it really 'vintage tone' or 'worn-out tone'?
Danelectro is my favorite type of guitar, simply for the genius of their unorthodox, inexpensive, yet highly effective designs. I love the tone of old-growth masonite. If you are looking for details, the Pro-1 Bass is the most complete build documentation.
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This is the headless bridge I got a while ago that proved to be cosmetically damaged. You can even see the damage in this picture. I filled in the dings with black CA, but I had no expectation of ever hiding it, so this bridge got thrown in the junk box after I got a refund, they didn't want it back.
More: Headless Brainstorm ...