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4 years ago I procured a couple MadBean 2015 "Honey Dripper" (Colorsound Dipthonizer) PCBs for a custom commission request and got it built out with the requested modifications. This is a sweet, versitile auto-wah sort of circuit from the 70's. Instead of a single, fixed filter, it has a...

After meticulous tracing both the Rockman (SR&D - gray button) Acoustic Guitar Pedal and the Dunlop Acoustic Guitar Pedal (blue button), and all the heavy lifting in KiCAD for PCB layout work from @rwl, we've accomplished a working PCB for this oldie goldie. We went with the Dunlop blue button...

Another nice surprise from @Robert. The "Closed Circuit Booster Limiter". Who knew such a great utility pedal existed? Not me. Anyway, here's my build out of it.

I was pleasantly surprised by the sound of the Nein Fuzz and intrigued by its use of JFETs. So I built it out and enclosed it in a decent wrapper. I did do some pre-measuring of the JFETs to target close to what was spec'd in the build docs. I went with anything was within ±5% of the specs.

After finding the Kokko Distortion schematic, I traced the Kokko unit I had to check if the one I found is correct. My tracing matched the found schematic perfectly. But when I breadboarded it, it didn't sound like the original. I repeated the breadboarding a few times to be sure I was doing it...

I already have a Vox NuTube amp and thought I'd eventually build a NuTube OD Screamer. I wanted it a bit different in that I wanted to expose the grid section of the NuTube device. It gets a nice glow when powered up. I musta measured 37 times for every possible way to mount the NuTube device so...

LMS now has gold 5mm LED bezels!

Oftentimes we encounter builds that call for 1µF box film caps. And while they're not hard to find, finding a small enough 1µF film cap can be a challenge. How many times have we tried placing a 1µF box film that encroaches far enough outside its footprint to interfere with the placement of...

Here's one for the hive-mind . . . . . Out of a batch of 100 genuine NOS Fairchild TO-92 J201 JFETs, I found three that test as dual-diodes on my Peak Atlas DCA-75. But when I try them in a circuit, they perform just the others that test as actual JFETs. The DCA-75 was fully charged, so PS is...

I'm looking for assistance in analyzing this circuit. What I can make of it is that it seems to pass signal when certain conditions of the lower section turns the JFET (Q102 2N5457) off. I'm guessing the lower section captures the signal's attack transient and turns the JFET on or off. A...

There once was a comic book series created by Gilbert Shelton called the Fabulous Furry Freak Brothers. Three hippy stoners who communed together with a cat in a roach infested apartment. Their antics are hilarious. Gilbert Shelton even did a spin-off series featuring just Fat Freddy's Cat...

Diggin' the vibe I'm having with "Grunge Bob", I took a dip into the Friendly Fire Fuzz circuit with another short run featuring our favorite deep-sea sponge fellow. But I encountered a snag with just the Friendly Fire Fuzz circuit. It's a below unity gain fuzz build. @Ginsly was kind enough to...

UPDATE: The schematic is now corrected & fully updated - May 5, 2025. A few years back Dimitris Smith Diamantidis created a neat little BBD test circuit board. It was available thru DSMCZ. But since, Dimitris has pretty much moved on and DSMCZ is out of stock on those PCBs. I had been in...

Anyone else find the "Friendly Fire Fuzz" to fall short of unity gain? This is a great sounding fuzz circuit, but it does not even achieve unity gain. I tried a few different BJTs, (MJE340, KT315B, & BC184L), with no volume increase. However, the different BJTs do provide some different...

Probably my 13th Klon (Kliche) build and IMO, the nicest looking. Kudos to AmplifyFun for the enclosure paint & drills done up in a LoveMySwitches Gold Sparkle enclosure drop.

Found myself curious over PPCB's "Two Sticks of Derm Fuzz" one-knob fuss circuit and wanted to try it out; so I got three. The first test construct was pure stock build and it sounded wonderful. Still, for grins, I wanted to test things further by replacing the two VCC resistors (R2 & R6) with...

The Kokko Distortion pedal, by many, is claimed to be a Tube Screamer. However, after doing some rudimentary tracing and web searching, I found this schematic that nails the actual Kokko Distortion pedal. The Kokko Distortion is NOT a TS circuit with soft clipping. Rather, it appears to be...

Just wrapped up a pair of Day Dream Delays. Did the artwork in Photoshop, sent two of LoveMySwitches' Blue Sparkle 'Limited Powder Drop' enclosure and the artwork/drill file to AmplifyFun and stuffed 'em with PedalPCB's Day Dream Delay boards. Great sounding delays!

The Aion Argent (Boss FZ-3 Fuzz clone) is an excellent fuzz. Zero build issues and sounds great!

Really happy with the printing results from AmplifyFun on my enclosure artwork. Robert's PCBs are the bee's knees.