top of page


NG-4 Fuzz
Bootstrapping is great , I said as much myself. Sometimes that love gets a bit too far, sometimes you build a whole career on it. Either...
Aug 28, 20242 min read
335 views
0 comments


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
797 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
739 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
973 views
5 comments


Trembling Satellite tremolo
The Tremulus Lune is by far the most popular DIY tremolo project, and for good reasons: it's a simple enough circuit that does all you...
Jun 4, 20235 min read
567 views
2 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
167 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
398 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
509 views
0 comments


Morley M2 Volume Wah (M2WA) schematic
There's not much information about this series from Morley. This company seems to have tried many different control schemes for the wah,...
Apr 27, 20232 min read
125 views
0 comments


Mooer Micro DI schematic
I've got my hands on an undersized Mooer Cabsim/Balanced driver pedal, and without even sparing any time actually trying how it sounds,...
Apr 24, 20232 min read
258 views
0 comments


MXR M-151 Doubleshot schematic tracing
I had the chance to get my hands on the MXR Doubleshot for a little while, and found out there are no available schematics anywhere. It's...
Apr 2, 20234 min read
168 views
0 comments


FBT mini club schematic schema
Let's keep the parade of old Italian amplifiers going. This is a very small and lightweight combo amplifier from, I guess, the late 70s....
Mar 7, 20231 min read
182 views
0 comments


FBT Mini-Maxi 52 schematic schema
Second in the series, this is an old Italian transistor amplifier that has been in my house for a very long time. It doesn't sound very...
Mar 1, 20231 min read
135 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
594 views
0 comments


Meazzi Emthree M3 Studio 30 schematic schema
Although this site is mostly dedicated to my own original circuits and builds, I've originally envisioned it as something wider, to...
Feb 22, 20231 min read
173 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
811 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
281 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
386 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
1,133 views
2 comments


Dudson Narrowcast V2
This is a circuit I've made a little more than a year ago, as an answer to a very popular distortion pedal based on preamplifiers of the...
Oct 6, 20225 min read
1,031 views
5 comments
bottom of page