Recent builds (at least one PedalPCB in there)

I recall repairing a Maestro Filter S/H back in the day. I traced the circuit and figured out how it worked. That 2N3904 that's wired "backwards" with only the emitter and collectror in the circuit is the random noise source for the S/H. Some transistors are noisier than others and in this case, a noisy one is exactly what we want. The guy that owned the pedal didn't use it much, but when he did, it was very effective. At the time, no one had any idea that these pedals would become vintage gems one day and command a 4-figure price. I'm going to add this one to the PedalPCB wish list.
 
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