The MXR M77 Custom Modified Badass Overdrive Guitar Effects Pedal is a classic overdrive circuit with modern modifications for improved performance and versatility.
For added flexibility, there’s a 100HZ cut and boost control that allows for a more focused EQ when cut, or a beefier tone when boosted. The Bump switch engages an alternate EQ voicing that boosts the lows and mids. Put it in front of the ’78 Custom Badass Distortion for a slew of amp-like gain structures that won’t mask your tone.
- Features
- Modified classic-overdrive circuit
- 100Hz boost/cut knob
- Bump switch that adds a bump in the mid and low EQ ranges
- True bypass
- Road-ready metal case
- Specification Detail
- Type: Distortion
- Inputs: 1 x Instrument
- Outputs: 1 x 1/4″
- Power Supply Included: No
- Batteries: 1 x 9V
- Height: 2.5″
- Depth: 5.5″
- Width: 4.5″
- Weight: 0.84 lbs.
- Manufacturer Part Number: M77








