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Perhaps he was banking on the pF capacitance of the guitar cable for forn a LRC filter? But may app-math doesn't align with that theory either. Or maybe he found some high freq oscilations in his builds/layouts. Who knows? But I bet if someone took the time to ask, he'd be willing to share. I...

~4.5v at pin 1 with a load of some sort. If your circuit ends at pin 1, I'm not sure how the loading of your DMM would construe the measurement.

This man is gonna have to open 87 pedals to find it.

Well, it forms a 19.4 Ghz LPF. A 6u8 would be 23.4Ghz, so yeah, should work. Maybe even get better wifi signal. Or just use a jumper, or a ∅R

I have one. paid less than half that on Ali for it 3-4 years ago. Same as @gtfields13, had some sealing issues. I just applied vacuum grease to the oring and saw improvement. It works okay. Not gonna beat out a PACE station, but for $17, it's okay. It takes a solid 10 minutes to heat up, has no...

Pondering some ideas and can't find the answer to th3 following curiosities. 1)does/can the FV1 operate in isolated dual mono? I.e., can a signal flow from LIN -> LOUT -> RIN ->ROUT without creating a feedback loop internal to the FV1? 1b) if so, what's the best practice to accomplish this...

We should get a group together and make a troubleshooting venn diagram. It would probably solve 60% or threads before they start.

You can plot a diode with an oscope, but it's not ideal. You need a small ac source and a CLR. Plot voltage to one axis and current to the other. But again, not ideal or all that accurate. Check out the octopus curve tracer project. Again, not the best tool for the job but cheap and easy. Where...

Tayda/SBP/LMS all sale pot dust covers. They're 5-10 cents and a worthy investment. You only need them on the pots that mount over the board, unless you have a tight build where a jack could short to a pot.

CTRL is a label used on PCBGM boards.

Pretty quiet, higher slew jfet input singles. A slightly better 071 if you will. Probably got them on a deal as they're obsoleted. An improved version of the LG155/156. Good for a buffah or onboard preamp but you could clip them too.

The West W*ñg could match the east one for all I care at this point. But Vance wouldn't be any better/less bad. Just a sharper dull tool.

First, thank you for not off board wiring everything. Secondly, painters tape ain't gonna cut it. Lastly, make sure the dual pot isn't contacting the pot above it.

I don't think toothed washers are optimal for this. They really need soft surfaces, like copper bus bars, and I don't think the excell under vibration. Honestly, I think the limited thread count on most jacks is the weak link. Both the nys and klbm don't have a great flush face to lock into/onto...

Did you sub transistors or possibly mix up the the npn and pnp? Q3 socket soldering cold/poor contact? Looks tilted.

A dim LED would indicate a likely short of power to ground or a weak PSU. Check all your power wires for bridges and stray strands as well as the board itself.

Pop in what duals you have and audition them If it sounds good, it is good. If it oscillates, motorboats or sounds like someone replaced a catalytic converter with a barn cat, try something else. It's likely the reason that opamp was first chosen is on the top of the datasheet. "Low Noise"...

Just use whatever dual jfet you have on hand. 275 should work fine. I think a R2R like a 2272 would even work as I don't think there's any opamp clipping, looking at the schem for 15 seconds.

Looks a wee bit vertically too. Lotta leg stretching and crooked shafts. Just gonna have to move to DBA style pads

Those look to be spaced further out than ppcb but maybe not? Email AP and ask them what the spacing is