DOD / MXR: 250, Distortion + component values table

Screenshot 2026 02 15 at 11.04.32 am 6d87dfe03c47

This is probably where it all started in terms of opamp-driven distortion –  in one side of 741 opamp, out the other with some hard clippers.   DOD 250 / MXR DISTORTION + SCHEMATIC Direct link to Google Doc 741 SPECS Numbers vary slightly by manufacturer and grade, but these headline specs are what give the … Read more

ZONK MACHINE: Component Values Table

Zonk Machine generic schem 63818739536d

Not a huge amount of variation on Zonks in terms of component values, and at one stage this was all on the MKI table, but I decided to split the two.   ZONK MACHINE SCHEMATIC ZONK MACHINE COMPONENT VALUES Link to table BUILD NOTES In my experience, the Zonk can be a little easier to make … Read more

TONE BENDER MKIII: Component Values Table

Tone Bender MKIII schematic template f33d00b52e82

This isn’t a complete reference of every Tone Bender MKIII / MKIV ever made. It’s a working table compiled from multiple online sources and gut shots, so treat it as a guide rather than absolute gospel. In some cases, it’s difficult to have a definitive set of values for any one pedal, as they are … Read more

TONE BENDER MKI: Component Values Table

Tone Bender MKI generic schematic 74f21158c4d4

Like most people, I’ve never even seen an original MKI in the flesh, so I’m relying on online references for this.  The references below all relate to original MKIs – or pedals that are said to be direct replicas of originals built for Sola Sound. Please feel free to comment and point me in the right … Read more

Tone Bender MKII – Component Values Table

Tone Bender MKII component table schem 05bb2929b473

Nice bit of MKII history on fuzzboxes.org   The MKII might be the most popular of the Tone Benders, although personally I’m split between the MKI & MKIII. There’s also this interesting timeline on the D*AM forum.  Not sure who made it, but it’s a handy reference (thanks ClassicFuzz).   TONE BENDER MKII SCHEMATIC & VALUES TONE … Read more

COMPONENT TABLE: Fuzz Face Variants

Fuzz face vairant schem 2fd9b848e2ad

FUZZ FACE VARIANT SCHEMATIC, INCLUDING MK1.5 & VOX TONE BENDERS The schematic includes room for components not present on a standard fuzz face, as some variants have additions.   I thought I’d keep it relatively simple and not venture into circuits with input blends or the various trimmers substituted for resistors (at least for now … Read more

Electro-Harmonix Big Muff Pi Schematic and Component Table

EHX Big Muff Schematic 2082d0cd792f

I used Kit Rae schematics, but I did not follow the same component numbering, as I don’t find it all that intuitive.  Kit did it that way for a good reason, this way works better for my brain.  There’s also this excellent post by Kit Rae on the EHX forum, broadly describing differences between versions. … Read more