So a little more research revealed they are using photoflash type lamps
35mm long with xenon in them. The yellow model is simply a filter over the
tube. They did that for Jack White, who wanted it yellow! Apparently they
boost the guitar signal to 3500 volts, then arc the tube and use an
So my neighbor plays bass in a couple of bands and showed me this 'plasma
pedal' the other night. They're not cheap and he mentioned maybe we could
build one. I told him I hadn't seen it before but would check it out.
Now, I see a couple of different ones, the common one being an argon
discharge
