Here’s the Clari(not) from Mid-Fi. It’s a delay/vibrato/fuzz… thing that’s pretty cool, and the sibling of the Pitch Pirate Deluxe. It uses an LM386 amplifier that pushes a fairly standard PT2399 delay and an optical vibrato. I’ve laid it out for on-board pots mounted from the solder-side and you should be able to squeeze it in a 1590B. Schematic can be found here.
