How does this thing even work?
Major design flaw #1: no DC bias path for Q2's gate. Easily fixed by jumpering C9, Removing R11 and replacing C10 with a 10K resistor. The 10K resistor is a "gate stopper" that prevents RF oscillations.
Major design flaw #2: no DC bias path for Q4's gate. Easily fixed by replacing C12 with a 10K resistor. Again, the 10K gate stopper prevents RF oscillations.
Any chance of the PPCB board coming soon? I got a Tangerine PCB to build for a friend and was planning on making the above changes but I'd love to get the extra balls version if it's not too far out
Also wanted some clarification so I don't mess something up: to jump C9 I assume I just run a wire between pads? And removing R11 means just leave the spot empty (no jumper)?