JMP GUITARS EFFECT PEDALS
Hand Made, True-Bypass Pedals
At JMP Guitars, our effect pedals are designed and built with tone seekers in mind. Each pedal is true bypass, ensuring “tone without the suck.” While our current production is limited to the models below, we welcome custom requests—just reach out!
Current Models

JoshuWah “Raw Wah” Pedal
Inspired by the iconic wah sound of the 1960s, we designed the JoshuWah “Raw Wah” to deliver raw tone and crystal-clear clarity. Perfect for modders, tweakers, and tone enthusiasts, this pedal’s circuit allows for easy value changes and modifications, so you can customize your sound with ease.
We also offer several mods for this pedal, including the famous “Chucky” mod, which lets you switch between two mid-range sweep resistors. Choose between a smooth, classic wah sound or an abrupt, aggressive sweep. Whether you’re a tinkerer or a tone purist, we built this pedal to inspire. Click here for the youtube demo.

DiLF – Dirty Little Fuzz
This happy fuzz pedal is a loving tribute to the classic tones of Pink Floyd and the legendary artists of the early 1970s who embraced those iconic, tunable noise-makers. There’s something truly special about this circuit—it can deliver everything from a sweet, harmonically rich clean boost to a screaming overdrive, depending on how you tweak the knobs. In fact, you could have three of these pedals on your board, each set to a different level of dirt, and they’d all earn their place with their delicious, versatile tones.
What sets this pedal apart is its ability to get dirty as hell without losing string separation or articulation. Dive deep into its sweet sustain and let it inspire your playing. Whether you’re chasing vintage vibes or modern grit, this pedal has you covered.

DiRT Classic Distortion
There’s something truly magical about this classic rodent-inspired distortion box. Whether you’re using it to boost your tube amp or cranking it up for snarly, gritty, and harmonically rich distortion, this pedal delivers the iconic sound you crave. From fuzzy grunge to rock, blues, punk, and beyond, it’s the perfect match for any style.
If you’re after that classic gain and sustain that cuts through the mix and inspires your playing, look no further. This pedal is your ticket to timeless tone.
Coming Soon:

Dino Chomp
As we get older, sometimes our ability to regulate volume isn’t what it used to be. WHAT?! Did you say something? Enter the compressor—your new best friend. This versatile pedal adds sustain while smoothing out your playing volume, giving you control and consistency. Use it subtly for a touch of compression and mild sustain, or crank it up for an all-out sustain boost that tames your overdrive.
The volume knob lets you dial in the perfect output level, whether you need a clean boost to cut through the mix or want to tone down the chaos from your distortion and overdrive pedals. It’s the ultimate tool for balancing your tone and keeping your sound in check.
More info coming soon.

Procrastinator Deuce
A classic digital delay tone is perfect for when you want to repeat yourself—even if you’re feeling a little lazy. The Procrastinator combines the best of both worlds, blending analog warmth with digital precision to deliver a timeless sound backed by modern reliability. The result? A delay pedal you can count on to deliver the echoes you’ve been dreaming of since the day you were born.
More info coming soon.
Previous Models:

Classic JoshuWah Wah Wah Pedal
We designed this pedal as an original creation, inspired by the iconic wah sound of the 1960s. Built with raw tone and crystal-clear clarity in mind, this pedal will take your wah game to the next level. Designed for modders, tweakers, DIYers, and tone enthusiasts, the circuit allows for a variety of value changes and modifications, so you can customize your sound with the flip of a switch.
JMP Guitars offers several mods for this pedal, including the famous “Chucky” mod, which lets you switch between two mid-range sweep resistors for either a smooth, classic wah sound or an abrupt, aggressive sweep. Whether you’re a tinkerer or a tone purist, we built this pedal to inspire. Click here for the youtube demo.

JoshuWah “The Beast” Wah Wah Pedal
Using the same circuit as the JoshuWah Classic, “The Beast” gives a vast array of tonal possibilities and examples of different options for resistor and capacitor values that affect the tone. We included Two inductors, two mid range sweep resistors, and TWELVE sweep capacitors in this pedal to showcase incredible variety. This is a demo pedal, and we will not make it for sale. There’s over $100 just in capacitors in this pedal! The dual-color LED shows you which inductor is active when you turn on the pedal.

Sweet Spot “Freak” JoshuWah Frequency Boost Pedal
Also using the JoshuWah circuit, this stompbox version is designed to focus and boost the “Sweet Spot” giving the same effect as leaving your wah wah pedal in a specific position and really focusing the frequency range chosen. This is a great way to make solos stand out and sustain for days!
Options include different values of resistors to adjust the output level of the pedal, and different capacitor brands for a variance in the tone produced. Of all of the brands of capacitors I’ve used in these pedals, I haven’t found one that I didn’t like. They can certainly sound different, but at that point it’s just a matter of taste. Take a look at “The Beast” demo video to get an idea of what you like.

A/B/Y True Bypass Selection Pedal
This pedal was designed as a passive ABY switch, with the addition of a True Bypass switch for an external pedal, and the option for an internal buffer.
The True Bypass pedal option is great if you have a non-true bypass pedal that you want to use, but you want to take it out of your signal chain when you aren’t using it.
The buffer option is the same as the “Buff This” box listed below, but built internally in this switch box.

Switch Hitter Amp or Effect Switch Pedal
The switch hitter is a simple switch, with style, to handle your amp or effect switching needs. It can be used to switch amp channels, turn on or off reverb or effect loops, and the hand-wired circuit can be made for your specific brand and model of amplifier. I love this because it’s so much smaller than most channel switches supplied with amplifiers, and takes up less room on my effect board.

Dank Tank Reverb Pedal
If you need to wetten up your sound, or just love reverb like I do, this Dank Tank pedal is a fantastic choice when your amplifier lacks reverb. Based on a Belton mini reverb tank, this pedal has an authentic sound you just can’t get from fully digital reverb pedals.
You can here a youtube demo of this reverb pedal on our non-reverb tube amp demo.

Classic Double Distortion Pedal
The idea behind the Double Overdrive pedal is to use two classic OD circuits in pre and post positions, to give you THREE great sounding overdrive options. The OD in the PRE position (on the right) works as the first stage, so I use this as a more subtle, OD. The OD in the POST position (on the left) is set for a little more tonal control, and a LOT more drive, to really crank my OD to where I want it. Either one can be used independently, but when you join them together, they can really make your guitar scream!

Phase me? Please. Phaser Pedal
Another simple, clean, and classic circuit, this time to give a nice phaser effect. Going from subtle to in your face phasing without losing your guitar’s tone.

Procrastinator AnaDigital Delay / Echo Pedal
The Procrastinator combines both analog and digital delay technology to give you a classic sound with modern reliability. The result is a delay pedal you can rely on to give you the echo that you’ve been waiting to hear since the day you were born.

Squishy Squishy Compressor Pedal
Squishy Squishy will squish you just the way you like it. The compressor can be used anywhere from a subtle compressor sound, with mild sustain to an all out sustain booster while controlling your overdrive.
The volume knob allows you to use it to boost your output level, or lower it to tone down the insanity from your distortion or overdrive pedals.

Tremble Tremolo Pedal
This classic tremolo sound is enhanced with a volume knob to make up for any perceived volume loss often associated with the use of tremolo pedals. Now you can make your groupies Tremble at full volume!

Pocket Penetrator Envelope Filter Pedal
Do you love the sound of a nice wah wah pedal, but you’re just too lazy to rock your foot back and forth? Then this Envelope Filter (Auto Wah) is just what you’re looking for! This has a great touch-sensitive, dynamic tone that you’re sure to love.

Buff This! Buffer Box
If you’re a tone snob like me, then I’m sure you’ve heard about True Bypass. True Bypass is a good thing, BUT, there’s something they generally don’t tell you. You actually do need a buffer (or two or three) in your signal chain depending on how many true bypass pedals you’re using. There’s actually a slight signal loss that occurs across multiple true bypass pedals. A QUALITY buffer is needed to keep the signal level up and consistent across your pedal board, feeding your full tone to your amp.

