AC adaptor
(PSA series; sold separately)
Electric Guitar
English
LEVEL knob
This adjusts the volume of the eect sound.
7 The ML-2 produces a heavy distortion with a bold attack, making it ideal for massive-sounding death-metal ris.
7 The LOW control produces a deep, low sound, even if you don’t use extreme downtuning.
7 The HIGH control lets you create guitar-ri sounds with lots of edge (attack) and a crisp high end.
OUTPUT jack
Connect an amplier to this jack.
Guitar Amp
DC IN jack
Accepts connection of an AC Adaptor (PSA series; sold separately). By using an AC Adaptor, you can play
without being concerned about how much battery power you have left.
* We recommend that you keep batteries installed in the unit even though you’ll be powering it with
the AC adaptor. That way, you’ll be able to continue a performance even if the cord of the AC adaptor
gets accidentally disconnected from the unit.
* Use only the specied AC adaptor (PSA-series).
* If the AC adaptor is connected while power is on, the power supply is drawn
from the AC adaptor.
CHECK indicator
This indicator shows whether an eect is ON/OFF, and doubles as the Battery Check indicator.
The indicator lights when an eect is ON.
* If this indicator goes dim or no longer lights while an eect is ON, the battery is near
exhaustion and should be replaced immediately.
LOW knob
This knob controls the tone of the eect at lower frequencies.
Turning the knob clockwise boosts the lower frequencies, while turning it
counterclockwise cuts the lower frequencies.
Pedal switch
This switch turns the eects ON/OFF.
Thumbscrew
When this screw is loosened, the pedal will open, allowing you to change the
battery.
* For instructions on changing the battery, refer to “Changing the Battery.”
Panel Descriptions
Main Features
Precautions When Connecting
5
To prevent malfunction and equipment failure, always turn
down the volume, and turn o all the units before making any
connections.
5
Once the connections have been completed, turn on power to
your various devices in the order specied. By turning on devices
in the wrong order, you risk causing malfunction and/or damage
to speakers and other devices.
When powering up: Turn on the power to your guitar amp last.
When powering down: Turn o the power to your guitar amp rst.
5
Before turning the unit on/o, always be sure to turn the volume
down. Even with the volume turned down, you might hear some
sound when switching the unit on/o. However, this is normal and
does not indicate a malfunction.
Use of Battery
5
A battery is supplied with the unit. The life of this battery may be
limited, however, since its primary purpose was to enable testing.
5
If you handle batteries improperly, you risk explosion and uid
leakage. Make sure that you carefully observe all of the items
related to batteries that are listed in “USING THE UNIT SAFELY” and
“IMPORTANT NOTES” (supplied on a separate sheet).
5
When operating on battery power only, the unit’s indicator will
become dim when battery power gets too low. Replace the
battery as soon as possible.
5
Batteries should always be installed or replaced before connecting
any other devices. This way, you can prevent malfunction and
damage.
5
The use of an AC adaptor is recommended as the unit’s power
consumption is relatively high.
5
If operating this unit on batteries, please use alkaline batteries.
Main Specications
Nominal Input Level -20 dBu
Input Impedance 1 MΩ
Nominal Output
Level
-20 dBu
Output Impedance 1 kΩ
Recommended Load
Impedance
10 kΩ or greater
Power Supply Alkaline battery (9 V, 6LR61)
AC adaptor (PSA series: sold separately)
Current Draw 60 mA
* Expected battery life under continuous use:
Alkaline: 5.5 hours
These gures will vary depending on the
actual conditions of use.
Dimensions 73 (W) x 129 (D) x 59 (H) mm
2-7/8 (W) x 5-1/8 (D) x 2-3/8 (H) inches
Weight 420 g / 15 oz (including battery)
Accessories Leaet (“USING THE UNIT SAFELY,” “IMPORTANT
NOTES,” and “Information”)
Alkaline battery (9 V, 6LR61)
Options
(sold separately)
AC adaptor (PSA-series)
* 0 dBu = 0.775 Vrms
* This document explains the specications of the product at the time
that the document was issued. For the latest information, refer to the
Roland website.
HIGH knob
This knob controls the tone of the eect at higher frequencies.
Turning the knob clockwise boosts the higher frequencies, emphasizing the
picking attack.
Turning the knob counterclockwise cuts the higher frequencies, producing a
tone in which the low-frequency sounds are more prominent.
DIST knob
This knob controls the amount of distortion applied to the sound.
Turning the knob clockwise boosts the distortion eect.
Owner’s Manual
INPUT jack
This jack accepts input signals (coming from a guitar, some other electric or
electronic musical instrument, or another eects unit).
* The INPUT jack doubles as the power
switch. Power to the unit is turned on
when you plug into the INPUT jack; the
power is turned o when the cable is
unplugged. To prevent unnecessary
battery consumption, be sure to
disconnect the plug from the INPUT jack
when not using the eects unit.
Before using this unit, carefully read the sections entitled: “USING THE UNIT SAFELY” and “IMPORTANT NOTES” (supplied on a separate sheet).
After reading, keep the document(s) where it will be available for immediate reference.
Operating the Unit
1. When you have made the necessary
connections, set the knobs as shown
in the illustration.
2. Depress the pedal switch to turn the eect on. (The
CHECK indicator lights when the eect is on.)
3. Adjust the amount of distortion with
the DIST knob.
4. Adjust the amount of high-
frequency sound with the HIGH
knob.
5. Adjust the amount of low-frequency
sound with the LOW knob.
6. Adjust the output volume with the
LEVEL knob.
Normally, you should adjust the LEVEL knob
so there’s no dierence in the volume when
switching the eect on and o.
Changing the Battery
1. Hold down the pedal and loosen the thumbscrew, then
open the pedal upward.
* The pedal can be opened without detaching the thumbscrew
completely.
Thumbscrew
Battery Housing
Pedal
Spring Base
Coil Spring
Guide Bush
Hole
Battery Snap
Cord
Battery
Snap
9 V Battery
2. Remove the old battery from the battery housing, and
remove the snap cord connected to it.
3. Connect the snap cord to the new battery, and place
the battery inside the battery housing.
* Be sure to carefully observe the battery’s polarity (+ versus -).
4. Slip the coil spring onto the spring base on the back of
the pedal, and then close the pedal.
* Carefully avoid getting the snap cord caught in the pedal, coil
spring, and battery housing.
5. Finally, insert the thumbscrew into the guide bush
hole and fasten it securely.
© 2017 Roland Corporation
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