Tools, Tones and Toys for Guitarists
A dual overdrive based on the classic grey spec DOD 250. The schematic didn’t come from the original EQD pedal. David has recreated the circuit on his website (Perf & PCB Effects Layouts). You can find his original and verified layout here.
Here’s another interesting take on the Tube Screamer circuit from Rockett Pedals. The input and output buffers are removed and there’s an added JFET gain stage following the IC. There are also switches to select different clipping diodes and treble response.
Fuzz Friday! Here’s a cool fuzz based on the old Supro Thunderbolt amp using NPN germanium transistors by RnFR from the Apocalypse Audio blog. Here’s what he had to say about it: I have been thinking about modeling the Supro Thunderbolt with FETs, but then thought- I just got in these cool new Tesla GE’s, … Read more
Here’s an oldie but a goodie from Menatone. The Blue Collar was released around the same time as the Red Snapper and is more compressed and focused in comparison. It’s also based around the Tube Screamer without the input buffers and with several mods. This layout reflects a newer version of the Blue Collar, but … Read more
It’s been a while but I saw this little one was missing, and as I own the pedal and like it, I think it’s a worthwhile addition. So thought I’d try to get back into the game even if it’s a bit diddy and embarrassing compared to what the other guys are posting :o) Info … Read more
Gotten a few requests for this one. It’s a based on the Tube Screamer, but without the input and output buffers and a modified tone section. I’ve laid it out for board mounted pots and the electrolytic caps are folded on their sides.
This is the 400th layout on the blog. Kinda hard to believe I’ve drawn up that many. O_O The cool dudes from Akron cooked up the Grey Channel, a dual overdrive based on the classic grey spec DOD 250. The 250/Distortion + circuit is one of my favorites and it turns out it’s one of EQD’s … Read more
Another great overdrive from VFE Pedals based on the Klon Centaur. You can find schematic and info on their website here.
The Velvet Fuzz is a unique fuzz that combines amp emulation and 2 different selectable fuzz tones. The toggle selects between a LM386 (Tight) circuit, and a 2N5089 (Big) circuit. These then push a Plexi Drive circuit that gives the Marshall amp emulation. The modular nature of this design gives you the option to have … Read more
Another amp emulation overdrive from Wampler that’s supposed to sound like (you guessed it) a cranked Vox. This one has been discontinued, but was very popular. It’s very similar to the Plexi-Drive, but doubles the transistors and there are a few component changes. I’ve added trimmers to help bias the J201s.