Owner’s Manual
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.
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 bass amp last.
When powering down: Turn o the power to your bass amp rst.
5
Immediately after the unit is powered-on, the eect is on.
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.
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 90 mA
* Expected battery life under continuous use:
Alkaline: 2 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 440 g / 1 lb (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.
English
Main Features
Panel Descriptions
Bass amplier
OUTPUT jack
Connect this jack to your amp or to the
input of another eect unit.
Pedal switch
This switch turns the eect on/o.
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.”
Bass
AC Adaptor
(PSA series: optional)
DC IN jack
Accepts connection of an AC Adaptor (PSA series; optional). By using an AC Adaptor, you can play without
being concerned about how much battery power you have left.
* Use only the specied AC adaptor (PSA series; sold separately), and connect it to an AC outlet of the
correct voltage. Do not use any other AC adaptor, since this may cause malfunction.
* If the AC adaptor is connected while a battery is installed, the power supply
is drawn from the AC adaptor.
* 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 accidently
disconnected from the unit.
LEVEL knob
Adjusts the output level.
RELEASE knob
Adjusts the consistency of the sound.
Turning this knob toward the left shortens the release time, making individual
notes more prominent. Turning the knob toward the right produces a smoother
and more connected sound.
Gain reduction indicator
Indicates the amount of compression when the compressor is operating. The
greater the compression eect, the larger number of indicators are lit.
RATIO knob
Adjusts the amount of compression (compression ratio) that is applied to the
input signal. Turning this knob all the way to the left produces a compression
ratio of 1:1 (no compression); turning it toward the right increases the
compression ratio, producing a greater eect.
THRESHOLD knob
Adjusts the signal level at which the compression begins to take eect. As you
turn this knob toward the left, the eect begins to apply at a lower input signal
level.
CHECK indicator
This indicator shows whether the eect is on or o, and also doubles as the battery check
indicator. The indicator lights when the eect is on.
* If you’re powering the unit with a battery and the CHECK indicator goes dim— or doesn’t
light at all—when you try to turn the eect on, the battery is near depletion and should be
replaced. For instructions on changing the battery, refer to “Changing the Battery.”
7 This is a dedicated compressor for bass that uses Boss’s cutting-edge MDP digital technology to make your sound consistent without impairing the fundamental frequency of your instrument.
7 A gain reduction indicator is provided so that you can see the results of compression.
7 The internal operating voltage of 18 V means that you can condently connect even high-output basses to this unit, which is designed specically for bass input.
* An internal voltage boost circuit is used to provide 18 V operation.
INPUT jack
This jack accepts signals coming from a bass
or other 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.
© 2016 Roland Corporation
02
Use of Battery
5
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.
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. Should you prefer to use batteries,
please use the alkaline type.
