Mr. Carlson acquired an instrument tuner. It doesn't just use vacuum tubes, it uses vacuum tubes, a custom pulsing neon tube, _multiple_ very custom transformers, a giant hidden reference tuning fork, a motor, and a 12-speed transmission gearbox, and it came to him fully working and _recently in service_.

Basically if you're into holy shit old electrics, you will probably enjoy this:

https://www.youtube.com/watch?v=Stxd_YMHF3U

(for reference, you can get phone apps for this, or you can buy little dedicated standalone devices the size of... idk, a thick credit card, or also the kind that's smaller and has a clip pickup that attaches to your instrument head. BUT NOT IN 1930)

#electronics #vintage #VacuumTube #VacuumTubes #MrCarlson #tuner #InstrumentTuner