Rated as one of the best guitar boosters, this classic and simple DIY project is the Super Hard On. The gain is a negative-feedback control styled after classic 60's recording console inputs. It is perfect to obtain the best of a classic amp and guitar.

This mini guitar amplifier is based on the Ruby Amp (runoffgroove.com). It can yield ½ Watt at 9V, being perfect as a home practice amp. It has gain and volume control, offering a very dynamic sound on any speaker.

The Distortion + has the ability to generate various personalities of overdrive, distortion or fuzz, depending on the way you play the guitar. This popular pedal is one of the DIY classics.

The LES LIUS simulates the sounds of the vintage Fender amps. It has a toggle switch that allows you to change tones from Tweed Fender Deluxe, High Power Twin and Master Volume. Also includes a footswitch to increase the gain and emulate the cracking of t

This pedal emulates a VOX AC amplifier working at the limit. It has the ability to work as a clean boost or an overdrive depending on the volume and gain control, offering a great dynamic response and open sound.

This guitar pedal offers a very smooth type of overdrive similar to the saturation generated by a vacuum tube. It is perfect to play blues and rock, adding a smooth saturation and good sustain.

This pedal can generate every tone you need. The Crunch channel provides from soft overdrive to hard rock distortion. The High Gain channel offers from rock gain stages to high-gain shred. Additionally a Boost will add extra volume to your pedal output.

The Box of Rock pedal emulates the JTM45 tone, a remarkable classic distortion sound. This pedal has very high headroom and you will be able to control the distortion tone by using your guitar volume knob.

This pedal is the original LPB booster that introduced the overdrive era in 1968. Use the LPB to obtain extra boost and definition to any pedal effect. This pedal will definitely increase the gain and saturation of your amp.

This bass booster is the Hog's Foot or Mole. It is a Linear Power Booster tuned for bass, it will give the lows you need.

This treble booster is the Screaming Bird. It is a Linear Power Booster tuned for highs. Whether it's overdriving an amp or just adding some highs to your sound, it will make your guitar cut through any mix.

This pedal boosts your treble with a very nice sounding. It is a very classic DIY project very close to the Rangemaster using silicon transistors. You can use it to add some treble or overdrive your amp with a great sound.

This is very simple and effective distortion circuit used in multiple designs like Lovepedal Woodrow. It emulates the tone of a cranked Fender 5E3 Tweed Deluxe amp. You can use this pedal to obtain many different tones and gains.

1590a overdrive project

The COT 50 gives a boost to the guitar with a unique tube-like sound. It can be used as a clean boost, crunch boost or overdrive. It has only one knob which controls the amount of overdrive.

This is the One Knob Fuzz, a high gain silicon fuzz with a very smooth response. This pedal is a classic DIY project, it is very easy to build and has a great fuzz sound.

EP Booster is perfect to boost the guitar adding some sparkle and definition. It sounds great over all the frequency range.

The Purple Plexi is a powerful distortion pedal with plexi-style amps tone. It is very dynamic and touch-sensitive distortion, perfect for rock music.

Distortus Maximus is a high-gain distortion pedal with three-band equalization. It produces rich harmonics and massive amount of gain ideal to play metal.

The Fuzz Factory is a five-knob fuzz pedal with huge range of sound possibilities. This is classic DIY pedal project that can be built with either germanium or silicon transistors.

This is the Fuzz Face, the legendary fuzz distortion pedal. With this PCB you can build the original or many other variants using either Germanium or Silicon transistors.

A preamplifier with Junction Field Effect Transistor (JFET) makes your guitar sounds great, operating in similar manner to the vacuum tubes. This circuit is very simple to build and can be used as a booster.

The Tubescreamer is probably the most built overdrive pedal in the DIY community. The pedal has a characteristic mid-boosted tone perfect for soft rock and blues. Also, for rock and metal, it can be used before the lead channel of amplifier to make distor

This is the RAT, one of the most popular distortion effects from the 80´s. It performs very nice high-gain distortion suitable for metal, grunge or rock.

The Dual Loop allows you to alternate between two different effects loops. It provides two switchable loops (send / return) with a single foot switch.

A simple distortion pedal based on the legandary "Sunn Model T" amplifier.

Triple rail regulated power supply for any modular synth with little distribution board.

This simple and effective buffer improves the high frequency degraded by long cables or pedal chains.

Thi popular DIY pedal produces the dynamic feeling and harmonics typical of tube amps. It incorporates a switch to control the bright and thick of the overdrive.

The most popular DIY high-gain distortion pedal is here. The Brown Sound In A Box version 2 (BSIAB2) is the excellent distortion pedal. It performs Marshall-type distortion that sounds great with low or high drive.

Quality through-hole FETs are becoming hard to find, replacing them with their SMD version is the best solution. This PCB is designed for placing SMD transistors and easily substituting the through-hole ones.