The DigiTech XMM Metal Master was built for one purpose and one purpose only: unapologetic, high-gain metal distortion. Part of the early
2000s X-Series lineup, this pedal represents DigiTech leaning hard into digital modeling to deliver massive, saturated tones that go far
beyond what traditional analog circuits were comfortably doing at the time.
Where earlier DOD distortion pedals had their own gritty personality, the Metal Master feels like a different beast entirely. This is tight,
aggressive, modern distortion with a sharper edge and a broader tonal range. It was clearly designed for players chasing that heavier, more
processed sound that defined a lot of metal tones in that era.
From the manual:"The Metal Master is the world's most advanced heavy metal distortion pedal. DigiTech's exclusive AudioDNA™
technology is what makes the Metal Master more than your standard distortion stompbox. Rather than working from a single distortion type
circuit with tone controls, the Metal Master features a Morph knob which blends between three totally different metal distortion types.
This gives you a wide variety of different metal distortion sounds that can be dialed in quickly and easily."
Now, let's get into it =)
Controls:
Level: Controls the overall output volume of the pedal.
Low: Controls the boost or cut of low frequencies (bass)
High: Controls the boost or cut of high frequencies (treble)
Morph: This is the primary voice control, allowing the user to blend between three distinct types of metal distortion.
Min Position: Smooth high-gain tone
12 o'clock Position: Scooped midrange sound
Max Position: Punchy, mid-range heavy metal sound
Note: Adjacent sounds can be blended between these positions
List price: $79.95 (May 2006)
Technical info:
Circuitry: Digital (utilizing AudioDNA processor)
Dual output: Amp Out and CIT™ (Cabinet Isolation Technology) Mixer Out for direct recording
Construction: Heavy-duty metal housing
Dimensions:
Length: 4 15/16 inches (approx. 125 mm)
Width: 3 1/8 inches (approx. 79 mm)
Height: 2 1/8 inches (approx. 54 mm)
Weight: 1.38 lbs (approx. 0.63 kg)
Power Supply: 9V DC (center negative), ~110mA current draw
Component-side circuitboard image: (On the to-do list)
Press the Play Button below to hear the original DigiTech Metal Master Sound Demo (2003)
How players actually use it:
Modern metal rhythm: Tight palm-muted riffs with plenty of low-end punch and controlled high-end bite.
Scooped high-gain tones: Dialing back mids for that classic aggressive metal wall of sound.
Lead sustain machine: With the gain up, it delivers thick, singing sustain that hangs on longer than you expect.
Chunky drop-tuning riffs: Handles lower tunings surprisingly well if you keep the low end tight and don’t let it get flubby.
Practice amp "big rig" cheat code: Plugged into a clean, basic amp, this pedal can instantly make a small setup sound much bigger and more aggressive.
Layered recording tracks: Not always the main tone, but it stacks well underneath other distortions to add density and edge.
Old-school meets modern: With the gain backed off and mids brought up, you can actually get into more classic metal territory without it sounding sterile.
Instant attitude button: Sometimes you just kick it on for a section that needs to jump out. It is not subtle, and that is exactly the point.
Suggested starting settings:
Classic metal rhythm: Gain high (but not maxed), mids slightly cut, lows and highs boosted just enough to stay tight. If the low end starts to get loose, back it down before touching anything else. This pedal will happily give you more bass than you actually need.
Lead tone: Gain near max, mids brought forward slightly, level adjusted for presence in the mix. A small mid boost here makes a bigger difference than cranking the volume.
Tight modern chug: Gain around 60–70%, lows pulled back a bit, highs crisp but not harsh. Let your picking attack do the work instead of relying on saturation.
Surprisingly usable mid-gain: Gain backed down, mids up, lows controlled. This is where the pedal starts to feel less like a blunt instrument and more like something you can actually shape.
Collector notes:
The Metal Master is one of those pedals that really captures the early 2000s shift toward heavier, more digital-driven tones. It sits right in that transition period where DigiTech was fully embracing DSP for high-gain sounds.
It tends to fly under the radar compared to some of the more talked-about X-Series pedals, which actually makes it a fun and often affordable pickup if you are building out a complete lineup.
Most examples you will find show honest wear. These were working pedals, not display pieces, so scuffs, smoothing of the textured surface, and general foot traffic wear are very common.
The tread area in particular will often show where a player lived on it. You will see shine or smoothing in that zone long before anything else starts to wear.
This is not usually a "centerpiece" collector pedal, but it plays an important role in the bigger X-Series story. It represents DigiTech going all-in on modern metal tone during that era.
Clean examples with the original box and paperwork are less common than you might expect, simply because most of these were bought to be used hard, not kept on a shelf.
Known quirks and tips:
This pedal can get very saturated very quickly, so small adjustments on the gain knob go a long way.
Running it into a clean amp works best. Feeding it into an already driven amp can turn things into a bit of a mess if you're not careful.
This is one of those pedals I have come to appreciate more over time. It may not be the first one people talk about, but when you look at the X-Series as a whole, the Metal Master tells an important part of the story.
It was built for a specific player, a specific sound, and a specific moment in time and it never tried to be anything else. There is a lot of value in that, both as a player and as a collector. -Ron
