What's New At DIYguitarist.net?


Allan Holdsworth Harness - A bit of info on these mysterious units hand built by Allan Holdsworth in the 90s.


Yamaha UD Stomp - Ode to the mighty UD Stomp! A little bit of history, links to manuals, why I like it, etc.


The "Viola" Sustainer Pedal - Check out this very interesting Soviet era compressor pedal based on the M72-3 IC chip.


The Mysterious USSR-era Kazan Guitar pedals. - Overview of the "Booster", the "Kvaker" wah and the "Vibrato" pedals.


The Kazan Vibrato (Tremolo) - Another interesting and very cool cold war Russian creation.


Re-Conditioning a Shin Ei Footswitch - An overview of what is inside of these heavy duty DPDT switches and how I fixed mine.


The Kvaker Wah Pedal - Check out this interesting old cold war era Russian wah pedal.


Gregory Amps Page - Added info about the Gregory "ADD-VERB" standalone solid state reverb unit.


Interactive Fourier Analysis Tool - Very handy interactive Javascript tool re-written for me by G. Tranter that allows you to see and hear what adding harmonics to a fundamental waveform does.


The Kadent Wah Pedal - The information found here also applies to the Banshee, Crown, Guild Stinger, Jax USA, Magnum and V-Jay wah pedals.


Shin Ei WT-1 "Companion" Wah Pedal - Everything you ever wanted to know about this Japanese made wah pedal from the 1970s.

Coming Soon! (01/29/2023)

Shin-Ei WT-1 wah pedal page complete with "inductor" specs (it's really a small transformer), inductor study via curve tracer, PCB layout and general info.

Pages added 01/27/2023

ADA Flanger LED Mod - How to add an LED to your ADA Flanger. Recommended for more experienced do-it-yourselfers.

ADA "Paul Gilbert Mod" - How to do the "Paul Gilbert Mod" to your ADA Flanger. Easy enough that almost anyone can do it!

Pitchmaster SA-60 Guitar Tuner - Added schematic to this page. It hasn't been double checked by a third party for errors.

Pages added 01/17/2023

Alternate Guitar Effect Enclosures - Some cool wood enclosures that I made, 100% scratch built Colorsound Wah Wah and using every day objects as enclosures.

100% Scratchbuilt Ampeg Phazzer clone - Made an almost replica of the great sounding Ampeg Phazzer using thrift store cookie sheet.

Schaller Bow Wow Yoy Yoy - Some general info about this rare super cool and great sounding wah pedal made in West Germany in the late 1960s.

Curve Tracer Fun - Various ways that you can use an "oscillocope octopus" to test inductors, guitar pickups, etc.

DIY Guitar FX Aids - 12 different things that make life a little easier when building DIY stompboxes.

Ergonomic DIY Pedal Board - If you use wah pedal and/or volume pedal a lot, this just works helluva lot better than a rectangular pedal board.

DSO Shell Handheld Oscilloscope - A review of the counterfeit DSO Shell that I built. Works fine but didn't know it was a clone at the time.

Re-Building A Dissected Ebow - This is a whole series on the Ebow, from rebuilding torn apart Ebow to attempting a clone from the incorrect internet schematic. Lots of testing too.

1965 Fender Showman - Repairing badly damaged speaker cabinet and more.

Parker Fly Deluxe Repairs & Mods - Stealth coil tap mod and repairing/replacing broken peizo saddle.

Estimating Guitar PUP Resonant Frequency - Contrary to popular belief, DC resistance DOES NOT tell you everything about a guitar pickup.

Ibanez DDL Hi-Cut Mod - Stealthy way of adding a hi-cut switch to Ibanez DDL delay without drilling any holes.

DIY ICL8038 Audio Oscillator - Revisiting one of my very first DIY projects.

DIY Jamman Loop Selector - Simple and cheap way to make you own loop selector for the ORIGINAL version of the DigiTech Jamman.

DIY Korg MS-01 - DIY workalike of a stupid expensive "vintage" Korg product.

My Desert Strum Amps - Little Gem MKII variants. Can you guess why I named it "Desert Strum"?

Real McTube Re-Visited - Improving upon my original build which was many years ago now.

Seymour Duncan Convertible PT Protection Mod - Adding a couple of resistors to protect the irreplaceable power transformer in the 100 watt Seymour Duncan Convertible guitar amp. This is a must do!

Seymour Duncan Convertible Load Plug - How to make a simple and cheap load resistor plug for your Seymour Ducnan Convertible guitar amp.

Seymour Duncan "Wattage" Control - What you need to know about that "wattage" control. I bet you're using the wrong tubes!

100 watt Seymour Duncan Convertible - An overview of the amp and its features.

Seymour Duncan Convertible Preamp Modules - An overview of the preamp modules that were made available for the Seymour Duncan Convertible guitar amps (there were 100 watt and 60 watt versions).

Shaka Tube Guitar Pedal Remodel - Revisiting one of my early DIY builds and making it just a little more awesome.

Sine Wave Tester - An interesting educational circuit that allows you to do waveform studies.

ssguitar.com Honey Amp - Completely scratch built mini guitar amp (minus the PCB supplued by ssguitar.com).

Tektronix 453 Repairs-Mods - Fixing burned out A Sweep Triggered light, fixing cooling fan and replacing power supply filter caps.

Fixing Dodgy Control on Zoom 9030 - That dodgy control might only need a little tweaking to make it work properly again.

Parker Fly Deluxe - Added PCB layout of the circuit board used in the "pre-refined" Parker Fly Deluxe.

Pitchmaster SA-60 Guitar Tuner - This obsure unit from 1975 uses an interesting circuit.

Black Cat Ring Modulator Schematic - This schematic has all of the component values on it.

Black Cat Ring Modulator PCB Layout - PCB layout that I derived from actual unit I had in my possession at one time.

Colorsound Inductor Wah PCB Layout - PCB layout that I derived from only pictures. I'm not sure what exactly model it applies to.

Vox "Grey Wah" Wah Pedal Clone - Added PCB layout of the orginal circuit board found in the first pattern enclosure.

Heathkit IO-4541 Quasi-Resurrection (YouTube) - Going thru o'scope that was given me to and determining what if anything had to be done to it.

Heathkit IO-4560 CRT Replacement (YouTube) - Replacing the dodgy CRT in Heathkit IO-4560 with a NOS CRT. Also goes over some repairs I had to do to get it 100% functional.

Heathkit IO-4541 FULL Schematic - The only full schematic in existence on the web as far as I know.

Mooer Shimverb - A Look Inside (YouTube) - I was curious as to how they packed so much into a tiny enclosure. This was my first mini-pedal, and I really like it.