Pricing and availability

We compare 600+ stores and found this item at 8 stores. Prices updated .

Sweetwater
4.5 (46)
$125.99
Guitar Center
5.0 (32)
$125.99
Amazon
4.5 (165)
$125.99 New
$107.79 Used (Like New)
Reverb
5.0 (70)
$99.48 New
$45.00 Used
Musician's Friend
4.0 (47)
$125.99
Gear4Music
£118.25

Average Price: $110

Standard/Professional

$80

$181+

Price Tier

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Standard

High-end

Price History

Based on price data from 3 merchants for "MXR M78 Custom Badass '78 Distortion". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

* Product prices and availability are updated by Equipboard every 24hrs and are subject to change. Equipboard may receive compensation for purchases made at participating retailers linked on this site. This compensation does not affect what products or prices are displayed, or the order of prices listed. For more information, please refer to our affiliate disclosure.

Description

Unleash your inner rock star with the MXR M78 Custom Badass '78 Distortion Pedal. This pedal is a tribute to the golden age of rock music, delivering the same roaring, old-school distortion that defined the genre. We're talking about a pedal that doesn't just add flavor to your sound; it serves up a full-course meal of rich, saturated tones.

MXR has taken a classic distortion circuit, and like a '78 muscle car, they've hot-rodded it to create a pedal that offers a spectrum of tones from smooth overdrive to grinding distortion. The result is a pedal that can handle the heavy rhythm work for those chunky power chords and also deliver soaring leads for your solos.

The '78 Distortion pedal keeps things simple with only three knobs – Distortion, Output, and Tone – making it easy to dial in your desired sound. But don't let this simplicity fool you; the pedal packs a punch with its CRUNCH button that boosts the harmonic content of your distortion, adding another level of intensity to your sound.

Under the hood, you'll find top-notch circuitry and hardware that's built to last, ensuring this pedal will be a part of your gear collection for a lifetime.

Key Features:

  • Hot-rodded classic distortion circuit for a wide range of tones
  • CRUNCH button to boost harmonic content and add extra intensity
  • Simple three-knob layout for easy tone shaping
  • Built with top-notch circuitry and hardware for durability
  • Delivers rich, saturated rhythms and soaring leads
  • Roars with huge amp stack tones and old-school distortion

Product specs

Pedal Type Distortion
Analog/Digital Analog
Inputs 1 x 1/4"
Outputs 1 x 1/4"
Bypass Switching True Hardwire
EQ Tone Control
Power Source 9V DC power supply (sold separately)
Batteries 1 x 9V
Power Usage 6mA
Height 2.12" (including knobs)
Width 2.62" (including jacks)
Depth 4.37"
Weight 0.48 lbs.

FAQs

What kind of distortion tones can I expect from the MXR M78 Custom Badass '78 Distortion?

The MXR M78 Custom Badass '78 Distortion delivers a range of tones from classic crunchy overdrive to aggressive, high-gain distortion, making it versatile for rock and metal genres.

Does the MXR M78 Custom Badass '78 Distortion work well with both clean and overdriven amps?

Yes, the MXR M78 is designed to complement both clean and overdriven amps, providing a wide-open, amp-like sound in either setting.

What is the function of the "Crunch" button on the MXR M78 Custom Badass '78 Distortion?

The "Crunch" button on the MXR M78 allows you to toggle between different clipping modes, enhancing the harmonic content and adding versatility to your distortion sound.

Is the MXR M78 Custom Badass '78 Distortion pedal true bypass?

Yes, the MXR M78 Custom Badass '78 Distortion features true hardwire bypass switching, ensuring your signal remains unaffected when the pedal is off.

What power options are available for the MXR M78 Custom Badass '78 Distortion?

The MXR M78 can be powered using a 9V DC power supply or a 9V battery, providing flexibility for various performance settings.

ProGuitarShopDemos

ProGuitarShopDemos

MXR Custom Badass '78 Distortion

Video thumbnail for MXR Custom Badass '78 Distortion by ProGuitarShopDemos

MXR Custom Badass '78 Distortion

ProGuitarShopDemos

ProGuitarShopDemos

Video thumbnail for Custom Badass '78 Distortion: James by jimdunlopusa

Custom Badass '78 Distortion: James

jimdunlopusa

jimdunlopusa

Video thumbnail for MXR Custom Badass '78 Distortion by jimdunlopusa

MXR Custom Badass '78 Distortion

jimdunlopusa

jimdunlopusa

Video thumbnail for Custom Badass '78 Distortion: Doug by jimdunlopusa

Custom Badass '78 Distortion: Doug

jimdunlopusa

jimdunlopusa

Video thumbnail for MXR Custom Badass '78 Distortion | Reverb Demo Video by Reverb

MXR Custom Badass '78 Distortion | Reverb Demo Video

Reverb

Reverb

Video thumbnail for MXR Custom Badass 78 Distortion versus Distortion + pedal shootout by gearmanndude

MXR Custom Badass 78 Distortion versus Distortion + pedal shootout

gearmanndude

gearmanndude

Video thumbnail for MXR '78 Distortion Pedal Demo by intheblues

MXR '78 Distortion Pedal Demo

intheblues

intheblues

Video thumbnail for MXR Custom Badass '78 Distortion Pedal by Guitar World

MXR Custom Badass '78 Distortion Pedal

Guitar World

Guitar World

Video thumbnail for MXR Custom Badass '78 Distortion (Yes! It's A REVIEW!) by Elmo Karjalainen

MXR Custom Badass '78 Distortion (Yes! It's A REVIEW!)

Elmo Karjalainen

Elmo Karjalainen

Video thumbnail for TONE THURSDAY: MXR Custom Badass 78 Distortion - It's Pretty...Badass by Music Bliss Malaysia

TONE THURSDAY: MXR Custom Badass 78 Distortion - It's Pretty...Badass

Music Bliss Malaysia

Music Bliss Malaysia

Video thumbnail for MXR Custom Badass ’78 Distortion Pedal Demo for Guitar - Want 2 Check by Want 2 Check

MXR Custom Badass ’78 Distortion Pedal Demo for Guitar - Want 2 Check

Want 2 Check

Want 2 Check

Video thumbnail for MXR Custom Badass 78 Distortion Pedal Demo   NO TALKING by Sandy Ridge Music

MXR Custom Badass 78 Distortion Pedal Demo NO TALKING

Sandy Ridge Music

Sandy Ridge Music

Reviews

PROS

  • Versatile, offering tones from light bluesy drive to full-on distortion

  • Excellent tonal clarity, even with heavier distortion

  • Works well with a variety of guitars (Les Paul, SG, Tele)

  • Crunch button adds fullness and a bit of volume, enhancing the sound

  • Durable, compact, and well-made construction

  • True bypass ensures no tone loss when pedal is off

  • Can be effectively stacked with other pedals for enhanced tones

  • Provides classic rock/hard rock/bluesy sounds excellently

  • Tone knob offers useful high frequency adjustments

  • Affordable price for the quality and range of sounds

CONS

  • Not suitable for metal genres, lacks mid scoop and extreme gain

  • Crunch button cannot be activated via footswitch, limiting live versatility

  • Some users find the aluminum construction less robust than older MXR models

  • High gain settings may introduce too much gain for some setups

  • Limited sustain for high gain or tapping techniques without additional pedals

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about MXR M78 Custom Badass '78 Distortion.

Features and functionality

  • The '78 has a push button switch that adds subtle saturation, best at high settings but can be muddy alone.

    Source
  • The distortion knob on the '78 has a significant jump in gain past 75%, with less gain overall than a DS-1.

    Source

Use cases and applications

  • The '78 is considered suitable for Marshall-style hard rock tones but may require stacking with other pedals for heavier sounds.

    Source
  • It's noted for excellent stacking capabilities, especially with a Russian Muff or Rat, enhancing heavy tones by brightening and scooping when the tone knob is adjusted.

    Source

Comparisons

  • The '78 is based on the Boss DS-1 but with less gain, while the Super Badass is more versatile and user-friendly.

    Source
  • The MXR M78 is described as less fizzy than the stock DS-1, particularly when used alone, offering a more musical sound.

    Source

User experience

  • Owners note the '78 requires more tweaking, particularly when aiming for modern hard rock tones.

    Source
  • The blue LED on the Crunch button is notably bright, prompting some users to cover it partially with tape to reduce glare.

    Source

Value and pricing

  • Despite being a Keeley-modded DS-1 clone, the M78 is praised for offering a similar sound at a more affordable price, consistently around $50 used.

    Source
Add

4.5 out of 5

Based on 21 Reviews and 100 Ratings

5 star
4 star
3 star
2 star
1 star
sandy_ridge

My Go to Distortion

It just sounds great, not sure what else to say here. The crunch button is excellent, adds just the right amount of flavour. I really want to try the custom badass overdrive too :-)

From Gear Setup
pandacup

Amazing distortion

Very versatile. Works best with valves rather than my Katana but you can control it with volume very well! Best distortion pedal I’ve ever used

taylor_itkin

Really good pedal for the price I got it at

I bought a brand new version of this pedal for $80 at guitar center, and I have to tell you, it is VERSATILE. I was able to get some tones out of it that sounded like some of my favorite bands: I got a nice thrash tone for Metallica, a crunchy tone with a British voice from the amp for Green Day, and a lighter crunch for some stuff like AC/DC.

The pedal died, unfortunately. It won't work even plugged into the wall anymore. I think I broke it somehow, probably when I dropped it down the stairs when I slipped on my dog's tail (the dog is OK). But the bottom line is, this is a very nice pedal for the price.

I only gave it 4 stars because there are BETTER pedals, but this is great for the price.

jimmarchi1

its a souped up Boss DS1... anyway, its probably an easy fix, something the power supplu or even just an issue with the 9v barrel jack not contacting the board right after you dropped it.... get some solder on any sketchy looking connections and see what happens

taylor_itkin

@jimmarchi1 thanks for the advice!

O

One of the best guitar distortion pedal

This pedal have a really evil distortion sound like a real HARD ROCK. Three knobs in a front panel give you full control of tone. You can customize your tone like hard rock and glam metal. Yeah you really can play GLAM METAL use this pedal and it's awesome. Also you can play just killing hard rock rhythm use a "Crunch" button. I think this is a one of the best old school distortion tone sound Just love this pedal)

jimmarchi1

Its a heavily modified Boss DS1 circuit. That's a hair metal sort of pedal.

ryanb

My favourite distortion

I recorded a four track EP in 2013 with the intention to mix and match my gear on every song to make them all sound different. I ended up just using the MXR Custom Badass on every track and the four different guitars I used ended up providing the tonal difference in each track. My pedalboard changes like the seasons but the MXR remains a solid constant!

cwirus88

Great tones for reasonable price

This distortion pedal is probably the best in its price range. Offers really wide palette of tones - from mild and warm overdrive to harsh, classic,aggresive and vintage-voiced distortion. Three simple controls and additional "crunch" (for a little more grit) make this box quite simple to use so an average player will get a desired tone pretty easily. I'm really pleased to have it in my board!

cammojodragon

Brilliant tone, lacking a little in sustain

The tone that comes out of this pedal is everything I could have asked for, particularly with the crunch mode equipped; smooth, with more than enough gain for a powerful rhythm section. My only suggestion would be to boost it with a compressor or clean gain for lead tones, no matter how hard I try the sustain doesn't quite go as far as I'd like. Easily fixed though; a fine pedal all round.

P

This little pedal likes tube amps and plays great with them ....

This is a great distortion, not a high gain, so you can push distortion at 100% it sounds very clear and every note is reproduced like you played it, without missing any one in the tubes !!!!! Tone knob is very efficient to color your sound form dark to bright

thicktoothizzy

Great For Chords

Great for getting fat rock distortion tones for juicy 80s rhythm. Kinda lacking when it comes to lead work; notes don't sustain very well. But if you're looking for fat dense chord sound, this might do it for you.

realkidd8

Great little pedal

An affordable distortion pedal that basically does what it does but does it well. Very straightforward "hard rock" sound. I love plugging this in with a simple setup: Gibson SG, pedal, amp...then go to town.

Artist usage

Add artist
See how John Frusciante uses MXR M78 Custom Badass '78 Distortion

John Frusciante

Guitarist

Red Hot Chili Peppers

...
Verified via Photo

Marked pedal in the attached picture. Used on John's studio pedalboard. Currently unknown if he used it to record guitar parts on Unlimited Love.

See how Paul Gilbert uses MXR M78 Custom Badass '78 Distortion

Paul Gilbert

Guitarist

Racer X

...
Verified via Photo

Paul Gilbert uses an MXR M78, as shown on Dunlop's website.

See how Ray Toro uses MXR M78 Custom Badass '78 Distortion

Ray Toro

Guitarist, Singer

My Chemical Romance

...
Verified via YouTube

In the "My Chemical Romance Rig Rundown with Frank Iero, Ray Toro & Mikey Way" video by Premier Guitar, at the 30:29 mark, an MXR M78 Custom Badass '78 Distortion Pedal is visibly included in Ray Toro's pedal setup.

See how Julien Baker uses MXR M78 Custom Badass '78 Distortion

Julien Baker

Singer, Guitarist

boygenius

...
Verified via Photo

Facebook photo of Julien Baker's live pedalboard.

See how Brian Molko uses MXR M78 Custom Badass '78 Distortion

Brian Molko

Singer, Guitarist

Placebo

...
Verified via Facebook

Brian Molko has used the MXR M78 Custom Badass '78 Distortion Pedal as part of his touring setup, according to a Facebook post from Placebo.

See how Johnny Bond uses MXR M78 Custom Badass '78 Distortion

Johnny Bond

Guitarist

Catfish and the Bottlemen

...
Verified via MusicRadar

In this Article you can see that Johnny states he uses an MXR Custom Badass

See how Doug Wimbish uses MXR M78 Custom Badass '78 Distortion

Doug Wimbish

Bassist

Living Colour

...
Verified via Photo

On this page of Dunlop's website, it lists the MXR M78 Custom Badass '78 Distortion Pedal as one of the MXR pedals used by Doug Wimbish.

See how Richard Hawley uses MXR M78 Custom Badass '78 Distortion

Richard Hawley

Singer, Guitarist

Pulp

...
Verified via Imgur

Used on the Hollow Meadows 2015 tour, as photographed in Guitarist magazine, February 2016.

See how Christoph Lupus Lindemann uses MXR M78 Custom Badass '78 Distortion

Christoph Lupus Lindemann

Guitarist

Kadavar

...
Verified via YouTube

In the YouTube video "KADAVAR - 'Rough Times' In The Studio (OFFICIAL ALBUM TRAILER #1)" by Nuclear Blast Records, Christoph "Lupus" Lindemann is seen adjusting his pedalboard, which includes the MXR M78 Custom Badass '78 Distortion Pedal.

See how Cacie Dalager uses MXR M78 Custom Badass '78 Distortion

Cacie Dalager

Singer, Guitarist

Now, Now Every Children

...
Verified via YouTube

Seen at 0:24 during their Audiotree Live Session.

See how Vidar Landa uses MXR M78 Custom Badass '78 Distortion

Vidar Landa

Guitarist

Kvelertak

...
Verified via Premierguitar

Vidar Landa used the MXR M78 Custom Badass '78 Distortion Pedal on his 2019-2020 pedalboard, as detailed in the Premier Guitar article "Kvelertak: 'Don’t Underestimate the Bongo.'"

See how Neto Roxs (Ernesto Ortiz) uses MXR M78 Custom Badass '78 Distortion

Neto Roxs (Ernesto Ortiz)

Singer, Guitarist

Serbia

...
Verified via Photo

Neto Roxs (Ernesto Ortiz) is shown using the MXR M78 Custom Badass '78 Distortion Pedal in a user-uploaded photo.

Album Usage

The MXR M78 Custom Badass '78 Distortion has been featured on the following albums:

Used With

Based on how musicians on Equipboard use MXR M78 Custom Badass '78 Distortion, it is most commonly used with the following gear.

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Community setups

Show yours
keanzy

keanzy

Gear IQ 115

chavaraujo

chavaraujo

Gear IQ 265

aleval

aleval

Gear IQ 67

jon_donnegan

jon_donnegan

Gear IQ 218

szilard_antal

szilard_antal

Gear IQ 147

M

matt_recto

Gear IQ 63

sandy_ridge

sandy_ridge

Gear IQ 922

jimdegroot

jimdegroot

Gear IQ 370

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