Metal Core

Where to Buy

Extreme Metal in a Compact Pedal

With its extreme gain, the ML-2 is the most potent and heavy distortion pedal ever created by BOSS. It easily delivers massive distortion and gain with heavy lows for playing Nu Metal, Grind Core, Industrial, Hard Core, or any genre that requires crushing sound. The ML-2’s ferocious and biting tone will complement and cut through any blast beats your rhythm section can create.

Nominal Input Level
-20 dBu
Input Impedance
1 M ohm
Nominal Output Level
-20 dBu
Output Impedance
1 k ohm
Recommended Load Impedance
10 k ohms or greater
Pedal switch, LEVEL knob, LOW knob, HIGH knob, DIST knob
CHECK indicator (Serves also as battery check indicator)
INPUT jack, OUTPUT jack, AC adaptor jack (DC 9 V)
Power Supply
DC 9 V, Dry battery 6F22 (9 V) type (carbon), Dry battery 6LR61 (9 V) type (alkaline), AC Adaptor (PSA series: optional)
Current Draw
36 mA (DC 9 V)
Expected battery life under continuous use
Carbon: 3 hours, Alkaline: 10 hours * These figures will vary depending on the actual conditions of use.
Owner's Manual, Leaflet (USING THE UNIT SAFELY, IMPORTANT NOTES, and Information), Dry Battery 006P/9V (6LR61)
AC Adaptor (PSA series)
Size and Weight
73 mm
2-7/8 inches
129 mm
5-1/8 inches
59 mm
2-3/8 inches
440 g
1 lbs.
* 0 dBu = 0.775 Vrms
* The battery that is supplied with the unit is for temporary use, intended primarily for testing the unit's operation.
* We recommend that alkaline battery be used when replacing the battery.
*The specifications are subject to change without notice.


Brochures & Catalogs


If you have questions about operating your BOSS product, please check our Knowledge Base for answers to the most common questions.
You can also contact our Product Support department by phone or email.
In addition, we have a library of Owner’s Manuals and Support Documents that you can download and reference.

Owner’s Manuals

Support Documents

  • BOSS Product Catalog 2008

    Forging the Future - Innovation for Creative Inspiration
    BOSS forges into 2008 with an awe-inspiring lineup of effects, digital studios, and accessories.

  • BOSS Guitar Effects Guidebook

    BOSS offers an extensive selection of guitar effects that can be used by guitarists to get any kind of sound you can imagine. Here's a quick reference guide to the type and function of each unit.