INPUT jack
This jack accepts input signals (coming from a guitar, some other musical
instrument, or another eects unit).
AC Adaptor
(PSA series; sold separately)
Electric Guitar
English
LEVEL knob
This adjusts the volume of the eect sound.
* When this knob is turned counterclockwise, no sound will be heard.
7 The BD-2 is the overdrive that has been specically designed for crunch distortion.
7 It can faithfully express the tone change caused by moving the knobs on the guitar.
7 It can create distortion that can faithfully reproduce the picking nuance of the player.
7 It can create wide varieties of distortions from crunch to hard distortion, by adjusting the Gain Knob.
7 Even if the Gain Knob is raised, a clean and natural sound can be produced by turning the volume of the guitar.
7 A natural-sounding overdrive continues to be produced without any loss in its quality, even if you turn down the volume on your guitar.
OUTPUT jack
The output jack is used to connect the unit to
ampliers or other devices.
Guitar Amplier
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.
TONE knob
This adjusts the tone of sound. Rotating it clockwise will create sharp sound with
emphasized treble, while turning it counterclockwise will create soft sound with
cut treble.
Pedal Switch
This switch turns the eects ON/OFF.
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 everything is properly connected, be sure to follow the
procedure below to turn on their power. If you turn on equipment
in the wrong order, you risk causing malfunction or equipment
failure.
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
* A battery was installed in the unit before it left the factory. The
life of this battery may be limited, however, since its primary
purpose was to enable testing.
* 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).
* 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.
* Batteries should always be installed or replaced before
connecting any other devices. This way, you can prevent
malfunction and damage.
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 Carbon-zinc battery (9 V, 6F22) or
Alkaline battery (9 V, 6LR61)
AC adaptor (PSA series: sold separately)
Current Draw 20 mA
* Expected battery life under continuous use:
Carbon: 24.5 hours
Alkaline: 44 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 360 g / 13 oz (including battery)
Accessories Leaet (“USING THE UNIT SAFELY,” “IMPORTANT
NOTES,” and “Information”)
Carbon-zinc battery (9 V, 6F22)
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.
GAIN knob
This adjusts the gain of the blues driver. Rotating the knob clockwise will
increase the gain creating harder distortion.
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.
Main Features
Panel Descriptions
Owner’s Manual
* 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.
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.”
© 2016 Roland Corporation
02
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. (Make
sure that the CHECK Indicator lights.)
3. Adjust the gain of the Dry or Overdrive sound using
the GAIN knob.
4. Adjust the tone using the TONE knob.
5. Adjust the output level using the LEVEL knob.
Changing the Battery
Thumbscrew
Battery Housing
Pedal
Spring Base
Coil Spring
Guide Bush
Hole
Battery Snap
Cord
Battery
Snap
9 V 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.
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.
