Blues Breaker
Bluesy Marshall inspired overdrive pedal. Uses the same PCB as the Tone King but with different components.
NP Electronics
DIY guitar effects pedal parts. PCBs and parts available for some of the most popular and sought-after boutique effects. All orders are shipped from the UK by Royal Mail.
PCBs and Instructions
Here are the PCBs we sell, along with links to the instructions for building your effects project.
Cake Overdrive
New Zealand designed overdrive pedal with a nice range of tones from mild to gainy. Also has a presence control to dial in the mid range tone you desire.
Distortion Plus
The original op-amp based distortion pedal from the 1970s. Countless other pedals are based on this hard clipping circuit and there are tons of mods available. Comes with space for a selector switch option where you can choose between two different sets of diodes so you can have silicon and germanium in the same pedal.
EP Booster
Transparent boost based on the pre-amp of an Echoplex delay which was made into a boutique pedal in its own right.
Fuzz Face
One of the most classic fuzz sounds on the planet, made famous by Jimi Hendrix. Build either a PNP version with voltage inverter or NPN transistor based effect with this PCB. Can be used with many different transistor types for a large range of sounds.
Harmonic Percolator
Obscure distortion pedal that uses one germanium and one silicon transistor to get an unusual fuzz tone. Gained notoriety online after being used by Shellac. Based on the Tagboard layout's recreation.
Llama Driver
Based on the tube sound fuzz circuit, this one uses a CMOS chip to get a great sounding distortion.
Muff Pi
A classic distortion effect that cames in multiple versions over the years. This board can be used to make many of them including: the original, Rams Head, Triangle, Civil War, Russian and NYC Reissue.
Naga Viper
Highly tweakable treble booster which has origins in the famous rangemaster. There are extra controls to select the range of frequencies you want boosting, not just the high end, and a heat knob for some sizzling tones.
Naga Viper New Version
Highly tweakable treble booster which has origins in the famous rangemaster. There are extra controls to select the range of frequencies you want boosting, not just the high end, and a heat knob for some sizzling tones. New revision with board mounted potentiometers.
Op-amp Muff
Op-amp version of the famous Big Muff distortion originally sold in the late 70s. Has a heavy fuzz tone, and plenty of tonal options. This is part of the defining sound of The Smashing Pumpkins Siamese Dream.
Plexi Drive
Get a the sound of an overdriven Plexiglass fronted 1960s British amp with this excellent sounding overdrive pedal.
Screamer
Probably the most popular pedal of all time, this circuit is based on the famous green screaming overdrive with a few tweaks and no buffer. The schematic used is Jack Orman's Son of Screamer.
SHO
The famous "crackle ok" mosfet boost circuit is great for boosting the level of your guitar and you can get huge amounts of gain from this little effect. Small enough to fit in a 1590A enclosure.
Tim
Boutique transparent overdrive that won't overshadow your guitars tone.
Tone Bender MKII
One of the first distortion pedals ever made in the UK back in the 1960s. Uses 3 germanium transistors for a fantastic rock sound.
Tone Bender MKIII
A later version of the original Fuzz pedal that has a better range of sounds available thanks to the tone control. Has a voltage inverter section so you can use this negative ground effect with your standard 9V power supply.
Tone King
Highly desirable overdrive circuit based around a Bluesbreaker. The super expensive original pedal this is based upon has two of these circuits with one running into the other to give an even bigger overdrive sound. Has options to switch two different clipping sections on or off for a variety of tones.