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For what it's worth, most of the ones that measure weird still bias OK and sound good in the Son of Ben and Supreaux Deux I just tested. Maybe they are at the high end of spec, but still good? Or maybe I made a mistake in my measurements both times? Maybe an appeal to some of the experts like...

No volume drop on mine once I got it all set up properly. That said, I did initially have a similar experience (able to recreate some settings that sounded right, but also a distorted signal depending) and it turned out my J201 was bad. If I were you, I'd learn to use the audio probe and...

Thought I may have screwed something up on the breadboard, so I built the measuring layout as per this post, but still get the same, high measurements for almost all my J201s (even ones that worked fine in my Low Tide). Any experts have any advice?

Amazing! Great job. Many would have given up long ago. It's a tricky effect to dial in (especially the trimpots). I messed with mine for a few days before getting it right (after replacing a faulty transistor). Keep us posted!

Oh yeah, sorry--I didn't see the socket under the J201. That's much easier!

Yeah. Should be fine. Depending on how comfortable you are with SMD, that might be the easier one to remove, as it may be tricky to get the through-hole pins out cleanly. Just be careful not to let the soldering iron sit on the pins too long, so you don't damage anything. I find some tiny...

Yeah. The board was designed to use either or, depending on what parts you have on hand, as some through-hole transistors are getting harder to find. Oh, yeah, definitely only use one in each spot.

Look closer at that photo---they used SMD versions of both the 2SK208 and the J201, so it is there. Did you receive an extra J201? I believe that may work in that position as well.

Hmm. Quick look and it appears as though you didn't install the 2SK208. That would definitely result in no sound. *EDIT: @music6000 was quicker on the draw than me. Ha

Not really, unfortunately. I do most of my parts sourcing from Tayda, and they may have everything you need, depending, but I still find I need to stop by StompBoxParts or Mouser on occasion for oddities.

Yeah, I'd recommend an audio probe if you can put one together. Then you can trace the signal starting from the jack to the switch, to the circuit and start getting an idea of where it dies. In the meantime, as per @Mcknib, good photos of your complete board top and bottom would be helpful to...

Oh right, sorry! That's good to know. Yeah, some jacks are better than others, but they are all the same principle, so you can choose the ones you prefer as long as they are wired correctly (I change up the jacks depending how much room I have, or what I happen to have in my parts stash). If...

Yeah, that won't work. With a mono cable you're just grounding the signal (a mono cable only has 2 connections---tip and sleeve). If you are able to switch to tip and sleeve instead you should be able to see if the circuit itself is working. Don't worry, the offboard wiring part of pedals is...

Here's a diagram I found, just in case. You can see that if you use the ring connection for the input signal that the tip won't connect to it at all (in fact, with a mono cable you'd just be grounding out your signal).

As per your other thread, you can ground pin 13 of the FV-1 to use the internal patches, but the internal patches are nothing special (I don't mind the Tremolo-reverb though). Keep in mind that the first 3 listed also have reverb, so your control over the chorus, flanger and tremolo is limited...

The stock patches are OK, but nothing special. I've built several FV-1 builds and have included a toggle to revert to stock patches, but never use it. Depends on what you're after in terms of the actual effect though, so whatever works for you!

Hmm. In my experience you definitely can't just choose whichever pin to use on the jacks. They all have different purposes. A TRS jack has the following: T - Tip, this is the one that connects to the tip of your cable and passes signal through R - Ring, this connects to the middle section of a...

Ah, okay. That's important information, as it means it could be your offboard wiring and not the Circuit itself. Did you end up finding a way to test which connections to use on the jacks? Also a picture of your switch wiring would help here.

Have you done the trimpot adjustments? They crucial for this circuit and can take time to get right. One trimpot adjust the BBD chip, which is more about the effected sound, but the other one adjusts the gate and that can take the sound out completely.

Yeah, same for me. It's rare that I'm drawn to the silver-faced knobs (maybe because they were the defaults for the BYOC kits I started with).