MXR M78 Custom Badass '78 Distortion

This pedal features a hot-rodded classic circuit that roars with huge amp stack tones and old school distortion with a Crunch switch to boost harmonic content.

The MXR Custom Badass '78 Distortion is a factory-modded pedal that roars with huge amp stack tones and old school tube amp-like distortion.

We took a classic distortion circuit and hot-rodded it to the next level for over-the-top soaring leads and rich, saturated rhythms. With only three knobs, dialing in Badass tone is a cinch. The CRUNCH button allows you to choose between two different modes of diode and LED clipping, boosting the harmonic content of the distortion.

The '78 Distortion's wide open amp-like sound sounds great whether it's in front of a clean amp, a slightly dirty amp, or a full on overdriven amp. Under the hood, this high performance machine features top notch circuitry and hardware meant for a lifetime of use.

A hot-rodded classic circuit
Roars with huge amp stack tones and old school distortion
Delivers soaring leads and rich, saturated rhythms
Crunch button boosts the dynamic range and harmonic content of distortion

Power

The MXR Custom Badass ’78 is powered by one 9-volt battery (remove bottom plate to install), a 9-volt AC adapter such as the Dunlop ECB003/ECB003E, or a DC Brick power supply

Directions

Run a cable from your guitar to the ’78 Distortion’s Input jack and run another cable from the 78 Distortion’s Output jack to your amplifier.
Set all controls to the 12 o’clock position
Turn the effect on by depressing the footswitch.
Rotating the Distortion knob clockwise increases the amount of distortion while rotating it counterclockwise decreases it.
Rotate the Tone knob clockwise for a brighter sound; rotate the Tone knob counterclockwise for a darker sound.
Rotating the Output knob clockwise raises the volume of the effect while rotating it counterclockwise lowers the volume.
Engage Crunch button (blue LED lit) to boost the dynamic range and harmonic content of distortion.
Input Impedance : 1 MΩ
Output Impedance : 6 kΩ
Nominal Input Level : -22 dBV
Max Output Level
Crunch Off : -5 dBV
Crunch On : -2 dBV
Noise Floor : -84 dBV
Distortion Range : 27 dB at 500 Hz
Max System Gain : 43 dB
Tone Control
Tilt EQ : ± 4 dB at 100 Hz ,± 5 dB at 2 kHz
Bypass : True Hardwire
Current Draw
LEDs Off : 2.5 mA
LEDs On : 6 mA
Power Supply : 9 volts DC