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Runoffgroove introduced a design in 2012 called the Azabache that's sorely overlooked. It's a great OD that broke some conventions at the time by using JFETs as 'clean' amplifiers, diodes for clipping and tacking on a primitive cab sim at the end. Subsequent designs from them built on this, but...

@vigilante398 , are you still populating your PCBs yourself or using pick&place service?

It's a lot more work, but you can get fancy with multiple colors and glittery paint.

It's a "reverse-etch" material, so you engrave an image on the back and fill it with white paint. Instead of paint, I use white stickers where the LEDs go so they shine through. Takes about 10 minutes to cut a faceplate. Wash the powder off. Then rub some white correction fluid in the...

Beamo. I had been using a Glowforge at the Makerspace and got cut off from access for much of the pandemic. The Beamo software is much easier to use IMHO. In addition to faceplates, I really enjoy making my own custom tools and drill guides, etc.

I got this up in the Wish List. Vote and cross your fingers!

Thanks! It's a laser-etched acrylic material. Same stuff used for a lot of amp faceplates. I bought a little desktop laser cutter and buy that material.

You can give it an upvote on the wish list.

PNP board verified. WooHoo! I got a few more NPN Ge from Smallbear in case I need to make a another couple of these.

Sweetness! Exciting stuff. Any chance you could explain how you're doing the programming for those of us less digitally inclined?

Any issues using a dual opamp, with the second half as the buffer replacing the mosfet emitter follower at the output?

What about ditching R14 and R13, using a 27K for R17 and a 5K trimmer for R18 with the wiper going to R15 for biasing?

Phase 90 to 91? Leaving us with a cliffhanger! Great article, Chuck!

It's just a personal project with a lot of SMD parts and pretty uncommon tubes - not at all suited for a DIY project.

Thanks, bud. I didn't realize the pics weren't clickable til you said something, so I got some bigger versions.

So I was fumbling around with using an opamp servo to bias JFETs and Chuck followed with a killer servo design for a Fuzz Face-style Germanium fuzz. In short, it's the absolute BALLS. Easily among the favorite fuzz boxes I've ever built - or played, for that matter. You can see the schematic and...

OMG, you're right. I forgot all about his flanger project.

Not yet. I've got 3 or 4 of them sitting my desk that I haven't gotten around to messing with.

Would a uC StompLFO work in there?