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Definitely agree! Tube or solid state alike. Both can house some dangerously-sized caps.

Guitars are also quite safe and relatively forgiving as you keep the grounding intact.

That said I only mentioned amplifiers as the GP was referring to hacking on cars—so I imagine the project wasn’t targeted at complete beginners when they were wondering about equivalent projects. And draining caps before working on them is one of the first things any tinkerer learns—or learns to stay away from.



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