Owner’s Manual

Before using this unit, carefully read the sections entitled: “USING THE UNIT SAFELY” and “IMPORTANT NOTES” (supplied on a separate sheet). These 
sections provide important information concerning the proper operation of the unit.
Additionally, in order to feel assured that you have gained a good grasp of every feature provided by your new unit, this manual should be read in its 
entirety. The manual should be saved and kept on hand as a convenient reference.

Precautions When Connecting

* 

To prevent malfunction and equipment failure, always turn 

down the volume, and turn off all the units before making any 

connections.

* 

Once the connections have been completed, turn on power 

to your various devices in the order specified. 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 off the power to your bass amp 

first.

* 

This unit is equipped with a protection circuit. A brief interval 

(a few seconds) after power up is required before the unit will 

operate normally.

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 fluid 

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.

* 

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.

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.

Specifications

BOSS BB-1X: Bass Driver

Nominal Input Level

-20 dBu

Input Impedance

1 MΩ

Nominal Output Level

-20 dBu

Output Impedance

OUTPUT:   1 kΩ 

LINE OUT:   600 Ω

Recommended Load 

Impedance

OUTPUT:   10 kΩ or greater 

LINE OUT:   600 Ω or greater

Power Supply

DC 9 V: Alkaline battery (9 V, 6LR61)/

Carbon-zinc battery (9 V, 6F22),  

AC Adaptor (sold separately)

Current Draw

54 mA

* 

Expected battery life under continuous 

use: 

Alkaline: Approx. 6 hours 

These figures 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

450 g/1 lb (including battery)

Accessories

Owner’s Manual,  

Leaflet (“USING THE UNIT SAFELY,” 

“IMPORTANT NOTES,” and “Information”), 

Alkaline battery (9 V, 6LR61)

Option  

(sold separately)

AC adaptor (PSA series)

* 

0 dBu = 0.775 Vrms

* 

In the interest of product improvement, the specifications and/

or appearance of this unit are subject to change without prior 

notice.

Setting Samples

Standard

Tight

Slap

Drive Solo

Copyright © 2014 ROLAND CORPORATION

All rights reserved. No part of this publication may be reproduced in any form without the written permission of ROLAND CORPORATION.

English

Main Features

Panel Descriptions

This is an effect unit that’s designed specifically for bass; it generates a solid sound that takes advantage of the tone and response of the bass itself.
Use the BLEND knob to mix the direct sound to the output, and use the responsive HIGH/LOW knobs to adjust the tone intuitively.
The LINE OUT jack provides a balanced output that preserves the tonal character of the bass amp. This is convenient when connecting a mixer or recorder.

INPUT jack

This jack accepts signals coming from a bass 
or other musical instrument, or another 
effects 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 off when the cable 

is unplugged. To prevent unnecessary battery 

consumption, be sure to disconnect the plug from 

the INPUT jack when not using the effects unit.

Bass amplifier

LINE OUT jack

Mixer

OUTPUT jack

Connect this jack to your amp or to the 
input of another effect unit.

Pedal switch

This switch turns the effect 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.”

This is a balanced (TRS) type output jack. 
Connect it to your mixer or recorder.

* 

The LINE OUT jack is wired as follows.

Bass

* 

This cannot be used as a headphone jack.

Recorder

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 specified 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 volume when the effect is on.

BLEND knob

Adjusts the output balance between the direct sound and the effect sound.

LOW knob

Adjusts the sound level of the lower range when the effect is on.

HIGH knob

Adjusts the sound level of the upper range when the effect is on.

Adjusts the amount of overdrive. Turning the knob clockwise increases the 
effect (distortion).

DRIVE knob

CHECK indicator

This indicator shows whether the effect is on or off, and also doubles as the battery check 
indicator. The indicator lights when the effect 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 effect on, the battery is near depletion 

and should be replaced. For instructions on changing the battery, refer to “Changing 

the Battery.”

* 

The CHECK indicator shows whether the effect is being applied or not. It does not 

indicate whether the power to the device is on or not.