BOSSCO GP-20 User manual

AMP FACTORY E p P 0
GUITAR AMP PROCESSOR
Owner's Manual
Thank you, and congratulations on your choice of BOSS GP-20 Guitar Amp Processor.
Before using this unit, carefully read the sections entitled: “USING THE UNIT SAFELY"
and “IMPORTANT NOTES" (р. 24-26; р. 2-3).
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, Owner's manual should be read in its entirety. The manual should
be saved and kept on hand as a convenient reference.
Main Features
Ф You can get 22 kinds of realistic amplifier modeling sounds, from great amps of years gone
by original amps.
@ Supports a wide range of uses, from live performances to recording.
© Provided with “MANUAL” and “MEMORY?” settings that let you switch between two tones
instantly with the press of a pedal, letting you switch between lead and backing for powerful
live performances.
© Equipped with digital outputs that enable recording through digital connections.
@ The controls and pedals provide simple and intuitive operation.
@ Can run on battery power (six AA type).
Copyright © 2000 BOSS CORPORATION
All rights reserved. No part of this publication may
be reproduced in any form without the written
permission of BOSS CORPORATION.

IMPORTANT NOTES
In addition to the items listed under "USING THE UNIT SAFELY" on page 2, please read
and observe the following:
Power Supply: Use of Batteries
* Do not use this unit on the same power circuit with any device that will generate line noise
(such as an electric motor or variable lighting system).
* The AC adaptor will begin to generate heat after long hours of consecutive use. This is
normal, and is not a cause for concern.
* 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.
* Batteries should always be installed or replaced before connecting any other devices. This
way, you can prevent malfunction and/or damage to speakers or other devices.
* Batteries are supplied with the unit. The life of these batteries may be limited, however,
since their primary purpose was to enable testing.
* Before connecting this unit to other devices, turn off the power to all units. This will help
prevent malfunctions and/or damage to speakers or other devices.
Placement
* Using the unit near power amplifiers (or other equipment containing large power trans-
formers) may induce hum. To alleviate the problem, change the orientation of this unit; or
move it farther away from the source of interference.
* This device may interfere with radio and television reception. Do not use this device in the
vicinity of such receivers.
* To avoid possible breakdown, do not use the unit in a wet area, such as an area exposed to
rain or other moisture.
IMPORTANT NOTES
Maintenance
*
For
everyday
cleaning
wipe
the
unit
with
a
soft,
dry
cloth
or
one
that
has
been
slightly
dampened
with
water.
To
remove
stubborn
dirt,
use
a
cloth
impregnated
with
a
mild,
non-
abrasive
detergent.
Afterwards,
be
sure
to
wipe
the
unit
thoroughly
with
a
soft,
dry
cloth.
* Never use benzine, thinners, alcohol or solvents of any kind, to avoid the possibility of
discoloration and/or deformation.
Additional Precautions
*
Please
be
aware
that
the
contents
of
memory
can
be
irretrievably
lost
as
a
result
of
a
malfunction,
or
the
improper
operation
of
the unit.
To
protect
yourself
against
the risk
of
loosing
important
data,
we
recommend
that
you
periodically
save
a
backup
copy
of
important
data
you
have
stored
in the
unit's
memory
on
a
paper.
* Unfortunately, it may be impossible to restore the contents of data that was stored in the
unit's memory once it has been lost. Roland Corporation assumes no liability concerning
such loss of data.
*
Use
a
reasonable
amount
of
care
when
using
the
unit’s
buttons,
knobs,
or
other
controls;
and
when
using
its
jacks
and
connectors.
Rough
handling
can
lead
to malfunctions.
*
When
connecting
/
disconnecting
all
cables,
grasp
the
connector
itself—never
pull
on
the
cable.
This
way
you
will
avoid
causing
shorts,
or
damage
to
the
cable's
internal
elements.
*
To
avoid
disturbing
your
neighbors,
try
to
keep
the
unit's
volume
at
reasonable
levels.
You
may
prefer
to
use
headphones,
so
you
do
not
need
to
be
concerned
about those
around
you
(especially
when
it
is
late
at
night).
*
When
you
need
to
transport
the
unit,
package
it
in
the
box
(including
padding)
that
it
came
in,
if
possible.
Otherwise,
you
will
need
to
use
equivalent
packaging
materials.

Installing Batteries
Insert the included batteries as shown in figure, being careful to orient the
batteries correctly.
* Make sure the “+” and “-” ends of the batteries are oriented correctly.
When the batteries run down, the POWER indicator gets dim. If this happens,
replace with new batteries.
NOTE When replacing the batteries, use six AA type.
* Do not mix fresh batteries with used ones, or mix batteries of different types. Doing so
can result in fluid leakage.
* Battery life can vary depending on battery type.
МЕМ! Continuous usage time under battery power is about 25 hours with alkaline
EM batteries and about 9 hours with carbon batteries. (This may vary according
to usage conditions.)
Making the Connections
The setting of the OUTPUT Select switch is extremely important to obtaining 100% of the
performance of GP-20. Be sure to use a setting that is appropriate for the device you have connected.
Connecting to the Guitar Amplifier
* When the unit is running on battery power, ihe power cones on when you insert the
connector plug into the INPUT jack.
* To prevent malfunction and/or damage to speakers or other devices, always turn down
the volume, and turn off the power on all devices before making any connections.
* Once you ve gotten hooked up correctly (р. 5—6), be sure to observe the following order
when switching on the power to your equipment. 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 (or the like) last.
When powering down: | Turn off the power to your guitar amp (or the like) first.
* Always make sure to have the volume level turned down before switching on power.
Even with the volume all the way down, you may still hear some sound when the
power is switched on, but this is normal, and does not indicate a malfunction.
* 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.
* If there are batteries in the unit while an AC adaptor is being used, normal operation will
continue should the line voltage be interrupted (power blackout or power cord disconnection).
Connecting to Normal Input on the Guitar Amp
AC Adaptor
PSA-series
Electric = (option)
Guitar
OUTPUT Select Switch
GUITAR AMP d
Guitar Amplifier
MEMO With a standard guitar amp, it may be a good idea to set all the tone controls
— (BASS, MIDDLE, and TREBLE) to their central positions first, then adjust
from there. We also recommend using clean (undistorted) settings on the amp.
5

Making the Connections
Using in Combination with a Power Amp and Guitar Speaker
Cabinet,
or
Connecting
to
MAIN
IN
or
RETURN
on
a
Guitar
Amp
| свое | AC Adaptor
PSA-series
(option)
Electric О
Сийаг
OUTPUT Select Switch
POWER AMP+SP
MAIN IN or
RETURN
Power He
Amplifier
М | wi
Guitar Guitar Amplifier
Speaker C) O
Cabinet
Connecting to an MTR or Mixer
013055
не mme.
ola
"|
АС Адаріог
PSA-series
= (option)
Electric £
Guitar
А, Ё DIGITAL IN INPUT Mom iN
Operation
Pedal Operation
Ў The settings for "MANUAL" and “MODELING ON” are made whe
4 switch on the
звана ана
power.
When at "ON" When at "OFF"
@ € Illuminated | © € Extinguished |
ON/OFF ON / OFF
When at "MANUAL"
© © Illuminated
UAL
When at “MEMORY”
© є Extinguished
UAL
© © illuminated
MEMORY
Each press of the MANUAL or MEMORY
pedal switches the unit between “MANUAL,”
which produces the sound of the panel knob
settings unchanged, and “MEMORY,” where
settings have been stored in advance.
Each press of the ON/OFF
pedal switches modeling
on or off.
When off, the sound
coming in from the INPUT
jack is output unchanged.
and backing sound in “MANUAL”
and “MEMORY,” you can switch
between lead and backing witha
| single action.
|
і
By making the settings for lead sound |

Operation Operation
налар
E
SC
PN
ca
RED
MUT
TUM
NOEIUE
Panel Operation Storing Settings (Write Operation)
For
purposes
of
this
explanation,
first
depress
the
ON/OFF
pedal
to
turn
on
Storing
the
“MANUAL”
Sound
in
Memo
modeling
(making
the
ON/OFF
indicator
light
up),
then
depress
the
ry
MANUAL
or
MEMORY
pedal
to
set
the
unit
to
“MANUAL”
(getting
the
Do
not
switch
off
the
power
while
a
write
operation
is
in
progress.
MANUAL indicator to light up).
1. Create the sound you want when set to “MANUAL.”
2. Press the WRITE button.
The MEMORY indicator flashes and the unit enters write standby.
3. Turn the BASS, MIDDLE,
TREBLE, and PRESENCE
knobs to adjust the sound.
A, Turn the MASTER knob to adjust the volume level.
It may be a good idea to switch on or
off using the ON/OFF pedal and adjust
the volume to about the same level.
Raising the MASTER volume too high
Note by using other knob settings may
produce unpleasant distortion. If that
happens, lower the MASTER knob.
*
Depending
on
the
chosen
Write
standby
model, no sound may be
produced when the BASS,
MIDDLE, and TREBLE
knobs are all at their
MEMORY
C)
T с> mL
minimum
settings.
EY
DP
k
MEMORY
ЖЕ
А
+
2,
Turn
the
Flashing
GAIN knob to |
adjust the
amount of
distortion.
3. Press the WRITE button again.
The MEMORY indicator flashes more rapidly, then goes out when the write
operation finishes.
1. Choose a model.
Use the MODEL knob and the
VARIATION button to choose the
sound you want from among 22 types
of models (guitar amps).
MEMORY
Writing
Write
finished
WRITE
p e E e
MANUAL MANUAL
Б
20
MEMORY MEMORY
Flashing rapidly Extinguished
* To cancel the write operation, then before you press the WRITE button, press the
VARIATION button or operate the MANUAL/MEMORY pedal.

Operation
——
—
———
—
———
A——mÓ"Á—cssá
Changing
and
Storing
the
"MEMORY"
Sound
NOTE
Do
not
switch
off
the
power
while
a
write
operation
is
in
progress.
1.
Press
the
MANUAL/MEMORY
pedal
to
change
to
the
“MEMORY”
sound.
2.
Operate
the
knobs
to
change
the
sound.
*
To
avoid
sudden
inadvertent
changes
in
sound,
the
GAIN,
BASS,
MIDDLE,
TREBLE,
PRESENCE,
and
MASTER
knobs
are
designed
so
that
the
setting
does
not
change
unless
the
knob
is
first
turned
as
far
as
the
stored
setting
value.
Once
the
position
of
the
knob
matches
the
setting
value
stored
in
memory,
the
sound
starts
to
change.
When
a
setting
changes,
the
MEMORY
indicator
flashes
automatically
and
the
unit enters write standby.
Write standby
MANUAL
-1@:-
EMORY
Flashing
3. Press the WRITE button.
The
MEMORY
indicator
flashes
more
rapidly,
then
goes
dark
when
the
write
operation finishes.
Writing Write finished
MEMORY
we
[T7
o.
же»
о
MANUAL
MANUAL
MEMORY
MEMORY
t t
Flashing
rapidly
Illuminated
*
To
cancel
the
setting
change
and
switch
to
"MANUAL,"
then
before
you
press
the
WRITE
button,
operate
the
MANUAL/MEMORY
pedal.
10
Part Names and Functions
Front Panel
[Tone Controls
BASS: This adjusts mainly the bass range.
i
| MIDDLE: This adjusts mainly the midrange band.
| TREBLE: This adjusts mainly the-treble range-
; і А
|
*
With
some
kinds
of
modeling,
the
manner
in
which
turning
|
PRESENCE
Knob
і
knobs
produces
a
certain
kind
of
effect
may
also
be
reproduced,
This
adjusts
the
sound's
so these three knobs have a mutual effect on each other. ps
— тт
GAIN Knob
This adjusts the | MASTER |
amount of
distortion and bd 9, ts th |
the volume | Fin акр
level. Turning it
clockwise makes
distortion
stronger and
increases the
volume level.
final volume
level. |
l|
| SPEAKER CABINET Knob
This chooses the type of speaker
cabinet.
When set to “ORIGINAL,” the optimal
speaker cabinet for the type of guitar
amp is selected automatically.
Rs “SPEAKER CABINET Type List”
(p. 13)
MODEL Knob
VARIATION Button
Use the MODEL controls to choose the type
of guitar amplifier, then press the
VARIATION button to choose a variation of
the guitar amp.
The button’s indicator lights up when you
have chosen a variation.
D “MODEL Type List"
(p. 12)
11

Part Names and Functions
Part Names and Functions
——
sa
a
I
ОБЕРНЕНО
*
The
trademarks
listed
below
are
trademarks
of
their
respective
owners,
which
are
separate
companies
from
BOSS.
Those
companies
are
not
affiliated
with
BOSS
and
have
not
licenced
or
authorized
BOSS's
GP-20.
Their
marks
are
used
solely
to
identify
the
equipment
whose
sound
is
simulated
by
BOSS's
GP-20.
Type Features
ORIGINAL || This is the built-in speaker of the amp you selected with MODEL.
No speaker-cabinet modeling is carried out.
MODEL
Type
List
і
4x12"
j
This
is
an
optimal speaker
cabinet
for
a
large
enclosed
amp
with
four
12-inch
speakers.
VARIATION
is
OFF
VARIATION
is
ON
4x10"
]
This
is
a
distinctive
open-back
speaker
cabinet
with
four
10-inch
speakers.
VARIATION
VARIATION
2x12"
|
This
is
a
general
open-back
speaker
cabinet
with
two
12-inch
speakers.
(2)
«=
Extinguished
(=)
«=
Illuminated
1х
12"
]
This
is
a
compact
open-back
speaker
cabinet
with
one
12-inch
speaker.
JC
CLEAN
||
This
is
the
sound
of
the
Roland
JC-
|
This
is
a
sound
with
flat
response.
120.
CRUNCH
|
This
is
a
crunch
sound
that
can
|
This
is
a
persistent,
fat,
midrange
POWER Indicator
This lights up when the power is on.
If this gets dim or fails to light up when
the unit is running on battery power, it
means that the batteries are depleted.
Replace promptly with fresh batteries.
го "Installing Batteries" (р. 4)
produce natural distortion. sound suited to blues.
This lights up when set to “MANUAL.”
LEAD
This
is
powerful
metal
sound
with
|
This
is
a
lead
sound
with
a
distinctive
high
gain.
midrange.
BLACK
|
This
models
a
Fender
Twin
Reverb.
|
This
models
a
Fender
Twin
Reverb
PANEL
|
with
brightness
on.
TWEED
This
models
a
Fender
Bassman
4
x
|
This
models
a
Fender
Pro
Reverb.
10"
Combo.
MEMORY Indicator
This lights up when set to “MEMORY.” Also,
during a write operation, this flashes when in
| write standby and flashes rapidly while
writing is in progress.
MANUAL Indicator
|
|
|
AMERICAN
COMBO
This models a MESA / Boogie combo
amp.
This models a Matchless D/C-30.
BRIT
This
models
the
lead
sound
of
the
|
This
models
the
clean
sound
of
a
l
ndicator
Press
this
а
;
COMBO
This
lights
up
store
settings
in
VINTAGE
STACK
| This models the sound input to
Input I on a Marshall 1959.
This models the sound of a Marshall |.
1959 with Inputs I and II connected
in parallel.
R-FIER
STACK
This models the lead channel of a
MESA / Boogie Dual Rectifier.
This models the rhythm channel of
a MESA /Boogie Dual Rectifier.
MODERN
STACK
E
This models a Soldano SLO-100.
This models the sound of a Marshall
with a modified midrange boost.
METAL
STACK
[ This models the lead channel of a |
Peavey EVH5150.
This models the rhythm channel of
a Peavey 5150.
onion |
ON/OFF
| is on.
WRITE Button
ON/OFF Pedal
Each press of the pedal switches mo
ANUAL/MEMORY Pedal
ach press of the pedal switches between
“MANUAL” and "MEMORY."
——
13

Part Names and Functions
BEEHISDNEMUEDX
RSCNIUHUR
A
OR
RITU
IUNII
RI
OE
ЛЕ
БНО
Rear Panel
DIGITAL OUT Jack
This output jack can be used when connecting to a mixer
or MTR having a digital input.
INPUT Jack
This is the input jack for connecting to the output of an
electric guitar or other instrument or effects processor.
AC ADAPTOR Jack
This jack is for connecting
an AC adapter (BOSS PSA-
series, sold separately).
Using an AC adapter
makes possible long
performances with no
worry about batteries
| [going dead.
|
|
| * The INPUT jack also doubles as the power switch when
| the unit is running on battery power. The power comes
on when a plug is inserted into the INPUT jack, and
goes off when it is unplugged. Unplug any connected
cords when the unit is not in use.
INPUT OUTPUT,
= POWER АМР SP A
Ss GUITAR АМР Ux [^ X
| Q
eP-20 ELA
OUTPUT Select Switch
| This switch optimizes the output of the GP-20 to
correspond to the device connected to the OUTPUT jack.
OUTPUT Jack
This jack is for connection
to a guitar amp, another
effects processor, mixer,
GUITAR AMP: MTR, or the like.
Set this when connected to the guitar input on a guitar amp.
| POWER AMP+SP:
Set this when connected to RETURN or MAIN IN ona
| guitar amp, or when connected to a guitar amp and
| guitar-use speaker cabinet in combination.
| LINE:
| Set this when connected to a mixer or MTR.
14
Noise
Suppressor
On/Off
Settings
The GP-20 has a built-in noise suppressor to cancel out noise and hum picked
up by the guitar.
The following procedure lets you set the noise suppressor on or off.
* The setting (on or off) is stored in memory when the power is switched off.
* At the factory settings, this is set to ON.
[d
. Switch off the power.
When running on battery power:
Disconnect the connection plug from the INPUT jack.
When running on power from an AC adaptor:
Disconnect the plug from the AC ADAPTOR jack.
2. While holding down the VARIATION button and the MEMORY button,
switch on the power.
When running on battery power:
Insert the connection plug into the INPUT jack.
When running on power from an AC adaptor:
Insert the AC adaptor plug into the AC ADAPTOR jack.
When you release the button, the VARIATION indicator flashes.
3. Set the noise suppressor on or off pressing the ON/OFF pedal.
ON/OFF indicator illuminated: | On
ON/OFF indicator dark: Off
4. Press the VARIATION button.
After the VARIATION indicator begins flashing rapidly, the setting is stored in
memory and the unit returns to its ordinary state.
15

Returning Settings to Their Factory Defaults
You can return the settings in memories and noise suppressor to their
factory defaults.
JON When this operation is carried out, everything that is now in memory is lost.
1. Switch off the power.
When running on battery power:
Disconnect the connection plug from the INPUT jack.
When running on power from an AC adaptor:
Disconnect the plug from the AC ADAPTOR jack.
2. While holding down the WRITE button, switch on the power.
When running on battery power:
Insert the connection plug into the INPUT jack.
When running on power from an AC adaptor:
Insert the AC adaptor plug into the AC ADAPTOR jack.
When you release the button, the MEMORY indicator flashes.
о
MANUAL
-[@:- Ф Flashing
MEMORY
* To cancel the operation, press the left or right pedal.
3. Press the WRITE button.
The MEMORY indicator flashes more rapidly, then goes out when the settings
return to their factory defaults.
Memory: “R-FIER STACK (Factory-default memory settings)" (p. 17)
Noise Suppressor: On
16
Sample Settings
R-FIER STACK (Factory-default memory settings)
MIDDLE TREBLE PRESENCE
€ СІ CO
AMERICAN COMBO
TWEED SS Bek ET VARIATION 4x12 ^ У
BLACK PANEL Y} Ax (07
LEAD | a SIN [2] 2x0
CRUNCH RS MODERN STACK Le
MODEL EE | SPEAKER CABINET |
CRUNCH
MIDDLE > PRESENCE
© f
6 wx 27 200
AMERICAN COMBO
BRIT COMBO VARIATION
MODEL SPEAKER CABINET
MILD CRUNCH
m
Illuminated
17

Sample
Settings
|
Sample
Settings
LEAD TWEED CLEAN
MIDDLE С)
С) Са
CQ E)
AMERICAN COMBO AMERICAN COMBO
TWEED
BRIT
COMBO
VARIATION
BLACK PANEL nux PANEL ey VINTAGE STACK
LEAD
R-FIER
STACK
|
«в
|
CRUNCH © gu зма
JC CLEAN
OFF. =>
SPEAKER CABINET H
SPEAKER CABINET -
illuminated
CLEAN MATCH DRIVE
BASS MIDDLE
f ERX
©) C5
Sy SEX
AMERICAN COMBO
PRESENCE
CY
m
Шитіпаїеа
SPEAKER CABINET
TWEED CRUNCH 60’s BRIT COMBO
бе, = PRESENCE
AMERICAN COMBO
VARIATION
ЕЭ
SPEAKER CABINET
18

Sample Settings
Setting Memo
VINTAGE STACK
MIDDLE TREBLE PRESENCE
OOOOOO
AMERICAN COMBO
TWEED BRIT COMBO VARIATION
BLACK PANEL VINTAGE STACK
LEAD R-FIER STACK c
CRUNCH MODERN STACK
JC CLEAN METAL STACK
MODEL m SPEAKER CABINET
( Illuminated / Extinguished )
MIDDLE TREBLE PRESENCE
AMERICAN COMBO
TWEED BRIT COMBO VARIATION
BLACK PANEL VINTAGE STACK
LEAD R-FIER STACK с
SPEAKER
CABINET
peris
iren
s
MODEL m SPEAKER CABINET
( Illuminated / Extinguished )
PRESENCE
MIDDLE TREBLE PRESENCE
AMERICAN COMBO
C — BRITCOMBÜ VARIATION
STACK
SPEAKER CABINET
( Illuminated / Extinguished )
21

Specifications
If You Think There’s a Problem
GP-20: Guitar Amp Processor
Nominal Input Level
INPUT -20 dBu
Input Impedance
IMR
Nominal Output Level
OUTPUT -20 dBu
Output Impedance
1kQ
Recommended Load Impedance
10 k Q or greater
Dynamic Range
108 dB (IHF-A typ.)
Controls
ON/OFF Pedal
MANUAL/MEMORY Pedal
GAIN Knob
BASS Knob
MIDDLE Knob
TREBLE Knob
PRESENCE Knob
MASTER Knob
MODEL Knob
SPEAKER CABINET Knob
VARIATION Button
MEMORY/WRITE Button
OUTPUT Select Switch
Indicators
POWER Indicator
(serves also as battery check indicator)
ON/OFF Indicator
MANUAL Indicator
MEMORY Indicator
VARIATION Indicator
Connectors
INPUT Jack (Normal type)
OUTPUT Jack (Normal type)
DIGITAL OUT Jack (RCA PIN type)
AC Adaptor Jack
Power
DC 9V: Dry battery (AA type) x 6, AC Adaptor
Power Consumption
85 mA (9 V max.)
* Expected battery life under continuous use:
Carbon: 9 hours
Alkaline: 25 hours
These figures will vary depending on the actual
conditions of use.
Dimensions
173 (W) x 158 (D) x 57 (H) mm
6-13/16 (W) x 6-1/4 (D) x 2-1/4 (H) inches
Weight
1.1 kg / 2 lbs 7 oz (including batteries)
Accessories
Owner's Manual
Roland Service (Information sheet)
Dry battery (AA type) x 6
Options
AC Adaptor (PSA-series)
* 0 dBu = 0.775 Vrms
бі
In the interest of product improvement, the
specifications and /or appearance of this unit
are subject to change without prior notice.
22
The power doesn't come on.
D Is the guitar connected correctly to the INPUT jack?
Э Check the connections again.
* When running off batteries, the unit won't switch on unless there's something plugged
into the INPUT jack. This helps conserve the batteries.
2 Have the batteries run down?
Э Replace with fresh batteries (р. 4).
O |s the specified AC adaptor (PSA-series sold separately) connected
correctly?
-> Check the connections again (p. 5-6).
There is no sound/volume is too low.
D Is the other equipment connected correctly?
Check the connections again (p. 5-6). з
D is the volume turned down on the connected guitar amp, effects
processor, or other device?
-> Check the settings on the connected equipment (p. 5-6).
D Are the tone controls (BASS, MIDDLE, and TREBLE) all turned down all
the way?
Э The tone controls have the same effect as on the amplifier that is modeled,
so depending on the type of modeling you have selected, there may be no
sound produced when all the tone controls are turned down all the way.
Noise is produced.
D Is the guitar connected properly to the INPUT jack?
Э When you are using the AC adapter, the power comes on even when а
connector is not plugged into the INPUT jack. This means that noise may be
produced when nothing is connected to the INPUT jack. Make sure
everything is connected properly before switching on the power to your
equipment.
23

=~ USING THE UNIT SAFELY
INSTRUCTIONS FOR THE PREVENTION OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS
About 4\ WARNING and A\ CAUTION Notices
Used for instructions intended
to alert the user to the risk of
death or severe injury should
the unit be used improperly.
Z\WARNING
Used for instructions intended
to alert the user to the risk of
injury or material damage
should the unit be used
improperly.
 CAUTION
* Material damage refers to
damage or other adverse
effects caused with respect
to the home and all its
furnishings, as well to
domestic animals or pets.
About the Symbols
The A symbol alerts the user to important
instructions or warnings.
The specific meaning of the symbol is
Æ | determined by the design contained within
the triangle. In the case of the symbol at left,
it is used for general cautions, warnings, or
alerts to danger.
The Q symbol alerts the user to items that
must never be carried out (are forbidden).
The specific thing that must not be done is
Q) | indicated by the design contained within the
circle. In the case of the symbol at left, it
means that the unit must never be
disassembled.
The @ symbol alerts the user to things that
must be carried out. The specific thing that
* Use only the specified AC adaptor
(PSA-series), and make sure the line
voltage at the installation matches
the input voltage specified on the AC AN
adaptor's body. Other AC adaptors
may use a different polarity, or be
designed for a different voltage, so
their use could result in damage,
malfunction, or electric shock.
* Do not excessively twist or bend the
power cord, nor place heavy objects
on it. Doing so can damage the cord,
producing severed elements and
short circuits. Damaged cords are fire
and shock hazards!
/\WARNING /NWARNING
Immediately turn the power off,
remove the AC adaptor from the
outlet, and request servicing by your
retailer, the nearest Roland Service
Center, or an authorized Roland
distributor, as listed on the "Infor-
mation" page when:
* The AC adaptor or the power-
supply cord has been damaged; or
* Objects have fallen into, or liquid
has been spilled onto the unit; or
* The unit has been exposed to rain
(or otherwise has become wet); or
e The unit does not appear to
operate normally or exhibits a
marked change in performance.
A
must be done is indicated by the design
contained within the circle. In the case of the
symbol at left, it means that the power-cord
plug must be unplugged from the outlet.
a
* In households with small children,
an adult should provide supervision
until the child is capable of following
all the rules essential for the safe
operation of the unit.
* This unit, either alone or in combi-
nation with an amplifier and
headphones or speakers, may be
capable of producing sound levels
that could cause permanent hearing
loss. Do not operate for a long period
of time at a high volume level, or ata * Protect the unit from strong impact.
level that is uncomfortable. If you (Do not drop it!)
experience any hearing loss or
SY
/NWARNING Z\WARNING
* Before using this unit, make sure to * Never use or store the unit in places
read the instructions below, and the AN that are:
Owner's Manual. * Subject to temperature extremes
(e.g., direct sunlight in an
enclosed vehicle, near a heating
duct, on top of heat-generating
equipment); or are
quisi Saat я ой Metu DR Ie Ma CT UE * Damp (eg. baths, washrooms, on
* Do not attempt to repair the unit, or wet floors); or are
replace parts within it (except when G * Humid; or are
this manual provides specific * Exposed to rain; or are
instructions directing you to do so). * Dusty; orare ;
Refer all servicing to your retailer, * Subject to high levels of vibration.
the nearest Roland Service Center, or
an authorized Roland distributor, as * Make sure you always have the unit
listed on the "Information" page. placed so it is level and sure to 5
remain stable. Never place it on
stands that could wobble, or on
inclined surfaces.
Dagug decas you should * Do not force the unit’s power-supply S
immediately stop using the unit, and
consult an audiologist cord to share an outlet with an
unreasonable number of other
devices. Be especially careful when
using extension cords—the total
* Do not open (or modify in any way)
the unit or its AC adaptor.
* Do not allow any objects (e.g.,
flammable material, coins, pins); or S power used by all devices you have
liquids of any kind (water, soft connected to the extension cord's
drinks, etc.) to penetrate the unit. NO outlet must never exceed the power
| rating (watts/amperes) for the
extension cord. Excessive loads can
cause the insulation on the cord to
heat up and eventually melt through.
* Before using the unit in a foreign
country, consult with your retailer,
the nearest Roland Service Center, or
an authorized Roland distributor, as
listed on the "Information" page.
24 25

* Batteries must never be recharged,
heated, taken apart, or thrown into є
fire or water.
/N CAUTION
* The unit and the AC adaptor should
be located so their location or
position does not interfere with their
proper ventilation.
* Always grasp only the plug or the
body of the AC adaptor when
plugging into, or unplugging from,
an outlet or this unit.
* Whenever the unit is to remain
unused for an extended period of
time, disconnect the AC adaptor.
* Try to prevent cords and cables from
becoming entangled. Also, all cords
and cables should be placed so they
are out of the reach of children.
* Never climb on top of, nor place
heavy objects on the unit.
* Never handle the AC adaptor body, QT
or its plugs, with wet hands when (Ы
plugging into, ог unplugging from,
an outlet or this unit.
* Before moving the unit, disconnect o
the AC adaptor and all cords coming
from external devices.
ÆA
WARNING
М
CAUTION
* Before cleaning the unit, turn off the
power and unplug the AC adaptor o
from the outlet.
Whenever you suspect the possibility
of lightning in your area, disconnect
the AC adaptor from the outlet.
If used improperly, batteries may
explode or leak and cause damage or
injury. In the interest of safety, please
read and observe the following S
precautions (p. 4).
* Carefully follow the installation
instructions for batteries, and
make sure you observe the correct
polarity.
* Avoid using new batteries together with
used ones. In addition, avoid mixing
different types of batteries. l
e Remove the batteries whenever the unit is
to remain unused for an extended period
of time.
If a battery has leaked, use a soft piece of
cloth or paper towel to wipe all remnants
of the discharge from the battery
compartment. Then install new batteries.
To avoid inflammation of the skin, make
sure that none of the battery discharge
gets onto your hands or skin. Exercise the
utmost caution so that none of the
discharge gets near your eyes. Immedi-
ately rinse the affected area with running
water if any of the discharge has entered
the eyes.
* Never keep batteries together with
metallic objects such as ballpoint pens,
necklaces, hairpins, etc.
Used batteries must be disposed of in
compliance with whatever regula-
tions for their safe disposal that may
be observed in the region in which
you live.
26
For EU Countries
( € This product complies with the requirements of European Directive 89/336/EEC.
For the USA
FEDERAL COMMUNICATIONS COMMISSION
RADIO FREQUENCY INTERFERENCE STATEMENT
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the
FCC Ruies. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee
that interference will not occur in a particular installation. Н this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
— Reorient or relocate the receiving antenna.
— increase the separation between the equipment and receiver.
— Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
— Consult the dealer or an experienced radio/TV technician for help.
Unauthorized changes or modification to this system can void the users authority to operate this equipment.
This equipment requires shieided interface cables in order to meet FCC class B Limit.
For Canada
NOTICE
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
AVIS
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

013055
BOSS Corporation Printed in Taiwan (6017290 2001-1-E3-1C

Roland — —
26017290
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