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LOL "fairly unremarkable op-amp booster" is not selling it for me. I see many schematics are using 200K for R1. Try a dist+, it's not much different component-wise, but people actually like it.

you won't get a reliable resistor reading if the resistor is in circuit, so this is expected. regarding biasing the PNP side, can you try swapping the transistors to see if you get different results. Do you know the specs of those?

I'd check the solder connections on the switch. Many of those look suspect.

Your demos are always of interest, keep 'em coming

Thanks @flemming! My workplace has a maker space with a 3d printer--I knew about it but never got around figuring out how to access it until my coworker and I were talking hobbies. He had 3d printed a hurdy gurdy (or laser cut? forgot which). Since he had permission to use the printer...

And when you do tune, getting in tune fires a kill shot into the exhaust?

Maybe it's one of those holidays they're always warning about.

https://forum.pedalpcb.com/threads/important-supplying-pictures-when-an-issue-arises-with-a-pcb-build.7081/

There's some audio mixing, audio recording, music production and sound engineering classes. Music theory too.

so the base here is the brush-on rust-oleum hammered paint? does it adhere well to the enclosure surface?

I would adjust to sound. It's for the gain of the signal going into the input--too low and your dry and repeats will sound quieter than your bypass. You can boost the signal if you want it to jump up a bit when you turn it on, but too high and it might distort the delay, so I try to get a...

I think the harmonic perculator (or Antithesis) works with a low hfe.

I was search to see what the Mofeta sounded like un-modded but came across this:

well don't leave us hanging

Sorry if this is old news, but I was browsing tayda today and saw two new-to-me colors: white hammer and silver gray hammer (the latter looks much lighter than the silver hammer).

@ragamuffin do you have an audio probe? at this point I don't think you'll solve it without. They're easy to build.

This pedal is basically a clone of the TC Elec Spark Boost. From what I can gather, Iommi was apparently a Spark Boost user (according the TC web site), and somehow Laney got Iommi to endorse their clone of it. It's definitely not an amp simulator, but it is a nice boost pedal.

Which demos? A lot of those are probably using an amp on the edge and using Mach 1 to push it over (i.e. getting gain from the amp by boosting with the mach 1). It's not a high gain drive. Do you have a clip of what you're getting?

did you sub something else in for bc549c? That pinout is different from many 2nXXXX subsitutes and will mess with you (speaking from experience).