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I’d say that’s a reasonable rule of thumb. When going mlcc, you’ll note there are different chemistries. NP0/C0G should be your first choice with mlcc, but you’ll find those are only available in very small capacitance values. X7R is usually the next choice, mostly because that’s what’s readily...

Build #2 turned out a little cleaner overall I think. I initially got away from top-mount 1590B builds, because the I/O jacks are too close together for the patch cables I was using with the pancake-style connectors. I never found any "mini" cables that worked reliably or inspired confidence...

I did this with two relays for a dual drive pedal (Paragon build I did for a friend). I haven’t yet made a dual electrical bypass. I think I drew up the schematic though. It’s conceptually easy/straightforward, but the PCB routing isn’t pretty.

Looks great! Thanks for posting the build report!

I'd say you did justice to a great circuit!

In this build, it's a relay bypass scheme. A Panasonic TQ-2L-5V relay does the actual effect/bypass switching (meaning, mechanical i.e. true bypass). A cd40106 (cmos hex inverter) responds to the footswitch and maintains state. Only two of the six inverters are used. This IC is a current...

Here's my latest spin of the Catalinbread Varioboost circuit. My gateway to this circuit was the PedalPCB Mercurial Boost. I then made my own custom PCB of the circuit, with integrated relay bypass, and all three knobs on the same horizontal line. Now I took it a step further and shrunk it...

Looks like I built around 20 pedals in 2025, maybe a few more depending on how you count. My five favorite circuits, in no particular order: Mercurial Boost, based on Catalinbread Varioboost. I use this for a lead boost via boosting the mids: allows me to stand out a bit without killing the...

I didn't have anything specific in mind, I was just kind of thinking out loud. Maybe an input buffer, maybe another gain stage, maybe a post-distortion active mid control, etc etc. Another question: if one wanted to add another clipping stage, specifically a hard clipping stage, would that...

@Chuck D. Bones - is it right to say U2A basically does gain recovery and filtering out-of-human-hearing-range frequencies? Looks like a high pass around 20Hz and I’m assuming the 330pF filters stuff too high for anyone to hear. And I think the gain would be about 7.2 (1 + 47/7.5)? Could that...

Here is my build of the Scenario Preamp, based on the Cornerstone Gladio SC. This was a client build. This is my first build for a new client, with whom I have now officially doubled my client base! (*) This was a very straightforward build, both because it uses common parts, and also because...

Have you guys ever seen or heard of the CD2399? I bought a Rowin LEF-303 “Ana Echo”. It’s marketed as an analog delay. I used to have a Mooer Ana Echo, which was indeed a BBD delay, supposedly a clone of the Boss DM-2. Sounded close enough for my purposes anyway. Foolishly I sold it, and they...

Using the parametric search function on DigiKey or Mouser, I always look for highest wattage in 1/8W size. All the common E6/E12 values, and even some wacky values, I can generally find in 1/3, 0.4, or even 1/2 watt rating. I think I’ve even snagged a few 0.6W resistors in the smaller size. Not...

@Chuck D. Bones - the way the first opamp stage of the stock Dark Esbat/Spark Boost is wired: as you said, it's a filter. But does it also act as a "boostrap"? I.e., a way to increase the input impedance?

FWIW, I didn't experiment with different clipping diodes in Chuck's modified Dark Esbat, but I did socket the clipping diodes in my Ember Boost build. (The Ember Boost/TCE Spark Booster is essentially the same circuit as the stock Dark Esbat/BCC TI Boost.) I experimented with LEDs, fewer...

Here's my recent build of the Angry Charles, based on the JHS Angry Charlie v3. I wanted a higher-gain MIAB-type sound, as I've been working on learning some Iron Maiden tunes. I'm not looking to duplicate that tone exactly, but just do a reasonable approximation. I don't really have any...

@bean did something sorta similar with the Aquababy: the three solder points for one of the pots are bordered by the NE571 IC socket. Good use of precious board space IMO!

Are those aluminum polymer caps?

For your next build, we won’t accept anything less than a titanium enclosure.

Impressive! I think this is the first time I’ve seen two PedalPCB boards in a 125B.