Tiny Guitar Amp Rebuilt with Tiny Tubes

[Blackcorvo] wrote in to tell us how he took a cheap “retro” guitar amplifier and rebuilt it with sub-miniature vacuum tubes. The end result is a tiny portable amplifier that not only looks the part, but sounds it to. He’s helpfully provided wiring schematics, build images, and even a video of the amplifier doing it’s thing.

The original Honeytone amplifier goes for about $26, and while it certainly looks old-school, the internals are anything but. [Blackcorvo] is too much of a gentleman to provide “before” pictures of the internals, but we looked it up and let’s just say it doesn’t …read more

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Hackaday Prize Entry: Hot Logic

A few weeks ago, [Yann] was dumpster diving and found something of interest. Two vacuum tubes, an ECC83S and an EL84. This was obviously the droppings of a local guitarist, but [Yann] wanted to know if he could build something useful out of them. An amplifier is far too pedestrian, so he settled on a vacuum tube computer.

The normal pentodes and triodes you’ll find in a tube amp require a lot of support components like output transformers, tube sockets, and high voltage power supplies. This was a little too complicated for a tube computer, but after a little bit …read more

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