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Bijous: pretty BJT overdrives
Also on FSB! https://www.freestompboxes.org/viewtopic.php?p=297316 Introduction Electric guitarists have been long enamored with...
Dec 27, 20239 min read
783 views
1 comment


Chewborg Envelope Filter
Introduction On my quest through re-imagining effects pedals, I felt like envelope-controlled filters deserved some attention. As it is...
Aug 6, 20239 min read
721 views
1 comment

"That" compressor
I had wanted to make a compressor circuit for a long time, because it's a popular and somewhat easy to make effect, but the existing DIY...
Jun 30, 202310 min read
954 views
5 comments

Cable shielding tester
There are times when instrument cables let through an unacceptable amount of interference, usually from mains. It could be a faulty cable...
May 27, 20233 min read
165 views
1 comment

CMOS multi-waveform generator
Anyone who has done any considerable amount of repairs and troubleshooting knows the importance of having a signal generator. For audio...
May 18, 20235 min read
390 views
4 comments

Pevy Knave Guitar Preamplifier
Check also the FSB thread! Peavey, Pavey, Pevy, or is it Pee-vee? One of my favorite amplifiers is still to this day the Peavey Bandit...
Apr 28, 202310 min read
499 views
0 comments

"True" MOSFET clipping at 9V? Green Turtle overdrive and other applications
MOSFETs, the incredible devices at the core of modern devices, computers, power supplies and… distortion pedals? For some reason, there’s...
Feb 23, 20236 min read
568 views
0 comments

Pelota 2: PT2399 delay
Check also the FSB thread It’s been a couple of years since I’ve made the first Pelota delay: from the very name, it was a circuit...
Jan 21, 202314 min read
790 views
2 comments

LFOstortion
Just as I was finishing working on the Enveloping Timbre, I realized I could try different kinds of control voltages, such as a LFO to...
Dec 4, 20222 min read
272 views
0 comments

Enveloping Timbre: envelope distortion
Keep the clarity of your attack before letting the distortion embrace you: the best of both worlds! At least that was the original idea...
Nov 28, 20229 min read
385 views
1 comment


PUP: a host of Perfectly Usable Phasers
I’ve always liked phasers, in fact one of my first pedals I’ve ever built was a Phase 45 clone. Not only I liked how it sounded, another...
Oct 22, 202215 min read
1,116 views
2 comments

Bootstrapping is great
Bootstrapping is a technique that has always fascinated me. In few words, by feeding an in-phase signal to the other end of the resistor,...
Sep 23, 20224 min read
861 views
0 comments

TE 386 drive
I've never been much into using the LM386 as distortion device. Mostly, the 50k cap on input resistance was what put me off, but also...
Sep 22, 20223 min read
509 views
0 comments


SLO mini tube preamplifier
Sometimes things don't go as you planned. You try and try again but the issues persist. This project has been around in some form for...
Sep 3, 202210 min read
664 views
0 comments


Sapphire amplifiers and the TDA2030 "phender"
My favorite amplifier is probably the Chempion I've built a couple of years ago. Since I use the amplifier mostly clean, relying on my...
Aug 23, 20228 min read
862 views
4 comments


Chempion tube amp
A couple of years ago I've built this small DC-powered tube amplifier. It's based on the "Silverface" Fender Champion AA764. Disclaimer...
Aug 22, 20227 min read
684 views
3 comments


VCA-1 multipurpose VCA pedal
I've had the idea of an envelope-controlled VCA effect pedal for a few months. Of course, many existing circuits fall into this broad...
Aug 15, 202215 min read
709 views
2 comments

ULNa and Radius Fuzzes
Some way or another I found myself salvaging a lot of ULN2003 and similar chips. Description says "Darlington driver", and while I try to...
Jun 9, 20223 min read
244 views
0 comments


Clearglass - some new glass for your bass
I'm a fan of the sound of the popular Darkglass pedals, and about a year ago I engaged into making the Fairglass , my first re-adaptation...
May 2, 202210 min read
540 views
4 comments


"that" Overdrive
Do you know about that overdrive? No, not that one, that one, this one! You might know I like to be very straightforward or to clean up...
Apr 23, 20223 min read
977 views
2 comments
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