This is the complete schematic for the Dumbleton™, a tiny 1/4 watt LM386-based amplifier that punches well above its size.

It’s the exact circuit demonstrated in this video.

But if you prefer working from a proper schematic, or you just want to support the channel, this gives you a clean, easy-to-read reference of the full circuit.

MODS : I’ve also included a range of bonus modification ideas directly on the schematic, alternate component values and tweak points that weren’t covered in the video.

If you enjoy experimenting, you’ll have plenty of room to push this little amp further.