JOYO JF-13 AC Tone Guitar Effect Pedal DI Amp Sim

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I used a SPDT switch, some fine wire-wrap wire, and a tiny bit of good ol' lead-tin solder with flux.

If your hand is steady enough and the tip of your soldering iron fine enough to work with SMD, yes it is.

C14 - .115uf This value is wrong (would cut all treble and most mids), i had the same problem. I guess that the input impedance of the unpowered opamp screws up the capacitance measurement there. Let's assume it's 470pF like the Blonde.

One important difference with modding the California is that the "0" surface mount resistor is instead 2.2k ohm resistor, and I did not remove it, and the mod works fine with that 2.2k resistor just left in place.

Thanks again for your work on the new pcb-layout - now it is a very versatile component of my pedal-board. The protection diodes are there, even if the opamp are now TL064 instead of static-sensitive rail-to-rail CMOS devices. The jumpers and open spots are there too. Despite the "True Bypass" label next to the 3PDT footswitch, there is a (presumably JFET source follower) bypass buffer. The SMD SOT-23 chip has "12W" making, it might be a 2N7002 MOSFET. Or something else.

I confirm it to be the same circuit as the Tech21 Character Series, but this one is kind of a mix between a Liverpool and a British. Probably somewhere around Birmingham. I found that R31 measured 22k on the actone while the california sound had 68k in that place.but the calif has added mic sim components which lower the overall volume so removing those to match the actone gave me significant increase in volume.

C14 is unknown, as i could not measure it accurately. It reads 9.6nF, which is wrong. I assumed 180p as in the Liverpool.