Zoom GFX1 Operation Manual

Operation Manual

Introduction

Thank you for selecting the
simply called the "GFX-1").

Please take the time to read this manual carefully so as
to get the most out of the unit and to ensure optimum
performance and reliability.

Retain this manual, the warranty card and all other
documentation for future reference.

Contents

SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . 2

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Basic Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Operating the Unit on Battery Power . . . . . . . . . . . . . 5

Controls and Functions / Connections . . . . . . . . . . . . 6

Selecting Patches for Play . . . . . . . . . . . . . . . . . . . . . 10

Using the Tuner Function . . . . . . . . . . . . . . . . . . . . . 12

Making/Changing DRIVE Module Settings . . . . . . . . 14

Editing a Patch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Storing/Copying Patches . . . . . . . . . . . . . . . . . . . . . . 18

Using a Separately Available Expression Pedal . . . 20

Restoring the Factory Defaults . . . . . . . . . . . . . . . . . 21

Effect Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Effect Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Specifications / Troubleshooting . . . . . . . . . . . . . . . 37

Usage Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Patch List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

ZOOM Corporation

©

Reproduction of this manual, in whole or in part, by any means, is prohibited.

ZOOM GFX-1

(hereafter

W

W

W

W

W

SAFETY PRECAUTIONS

In this manual, symbols are used to highlight
warnings and cautions for you to read so that
accidents can be prevented. The meanings of these
symbols are as follows:

This symbol indicates explanations
about extremely dangerous
matters. If users ignore this symbol

arning

and handle the device the wrong
way, serious injury or death could
result.

This symbol indicates explanations
about dangerous matters. If users
ignore this symbol and handle the

Caution

device the wrong way, bodily injury
and damage to the equipment
could result.

Please observe the following safety tips and
precautions to ensure hazard-free use of the GFX-1.

Power requirements

Since power consumption of this unit is
fairly high, we recommend the use of an

arning

AC adapter whenever possible. When
powering the unit from batteries, use only
alkaline types.

[AC adapter operation]

• Be sure to use only an AC adapter which
supplies 9 V DC, 300 mA and is
equipped with a "center minus" plug
(Zoom AD-0006). The use of an adapter
other than the specified type may
damage the unit and pose a safety
hazard.

• Connect the AC adapter only to an AC
outlet that supplies the rated voltage
required by the adapter.

• When disconnecting the AC adapter
from the AC outlet, always grasp the
adapter itself and do not pull at the
cable.

• During lightning or when not using the
unit for an extended period, disconnect
the AC adapter from the AC outlet.

[Battery operation]

• Use four conventional IEC R6 (size AA)
batteries (alkaline).

• The GFX-1 cannot be used for
recharging.

•Pay close attention to the labelling of the
battery to make sure you choose the
correct type.

• When not using the unit for an extended
period, remove the batteries from the
unit.

• If battery leakage has occurred, wipe the
battery compartment and the battery
terminals carefully to remove all
remnants of battery fluid.

• While using the unit, the battery
compartment cover should be closed.

Environment

To prevent the risk of fire, electric shock

arning

or malfunction, avoid using your GFX-1
in environments where it will be exposed
to:

• Extreme temperatures

• Heat sources such as radiators or stoves

• High humidity or moisture

• Excessive dust or sand

• Excessive vibration or shock

Handling

•Never place objects filled with liquids,

arning

such as vases, on the GFX-1 since this
can cause electric shock.

• Do not place naked flame sources, such
as lighted candles, on the GFX-1 since
this can cause fire.

• The GFX-1 is a precision instrument.
Do not exert undue pressure on the keys

Caution

and other controls. Also take care not to
drop the unit, and do not subject it to
shock or excessive pressure.

•Take care that no foreign objects (coins
or pins etc.) or liquids can enter the unit.

Connecting cables and input and
output jacks

Caution

You should always turn off the power to
the GFX-1 and all other equipment before
connecting or disconnecting any cables.
Also make sure to disconnect all
connection cables and the power cord
before moving the GFX-1.

Alterations

Never open the case of the GFX-1 or

arning

attempt to modify the product in any way
since this can result in damage to the unit.

Volume

Do not use the GFX-1 at a loud volume

Caution

for a long time since this can cause
hearing impairment.

2

ZOOM GFX-1

Features

The GFX-1 is a sophisticated multi-effect processor for guitar with the
following great features.

●

Superior performance

The GFX-1 provides a palette of 34 built-in high-quality effects,
including a wide variation of distortion settings and flexible
modulation effects. Up to nine effects can be used simultaneously. In
performance and features, the GFX-1 far surpasses anything in its
class.

●

Sturdy case and smooth operation feel

The metal body and large foot switches of the GFX-1 are designed to
withstand the rigors of use on stage. The intuitive operation of the unit
is derived from the highly popular ZOOM 606. Dedicated selectors for
the most important distortion effects make the unit a snap to use.
Controlling distortion type and intensity during a performance is
smooth and easy.

●

Built-in auto-chromatic tuner

The integrated auto-chromatic tuning function is tailored for the needs
of the guitarist and can be used on stage.

●

Compatible with expression pedal

Connecting an optional expression pedal makes it easy to adjust effect
depth or volume with your foot during play. Whether you choose pedal
wah or gutsy pitch bend, the range of available sounds is on a par with
top-range units.

●

Dual power supply principle allows use anywhere

Besides the AC adapter, the unit can also be powered from four IEC
R6 (size AA) batteries. Continuous operating time on batteries is
approximately 7 hours with manganese batteries and 24 hours with
alkaline batteries.

ZOOM GFX-1

3

Basic Terms

This section explains some important terms that you will find in this manual.

●

Effect module

As shown in the illustration below, the effect sound of the GFX-1 is
created by routing the signal through a series of different effects. Each
of these effects is called an effect module.

IN OUT

COMP WAH AMPZNREQDRIVE

In addition to effect modules such as DRIVE (distortion), MOD/
PITCH (modulation), or DLY/REV (delay and reverb), you can also
use the ZNR (Zoom Noise Reduction) and amp simulator
simultaneously. Parameters such as effect intensity can be adjusted for
each module, and modules can be switched on and off as needed.

●

Effect type

Each effect module of the GFX-1 contains a variety of effects in the
same general family. These are called effect types, and you can select
one of these at a time. For example, the MOD/PITCH module
comprises the effect types chorus, flanger, pitch shifter, etc.

●

Effect parameter

Each effect module has various parameters that control how the effect
operates. By adjusting the parameters for each module, you have a
considerable amount of control over the final sound.

●

Patch

In the GFX-1, effects are stored and called up in patches. A patch
contains information about module on/off settings, selected effect
types, and effect parameter settings. The GFX-1 can store 40 patches
in its internal memory.

●

Bank

A combination of 4 patches is called a bank. The GFX-1 has a total of
10 banks which are labelled A through J. The patches in each bank are
numbered 1 through 4. To select a patch, you specify the bank and the
patch number. A1 selects patch 1 in bank A, and F4 selects patch 4 in
bank F.

ZOOM GFX-1

4

MOD/PITCH DLY/REV

BANK J

BANK i

PATCH 1

PATCH 1

PATCH 2

PATCH 2

PATCH 3

PATCH 3

PATCH 4

PATCH 4

BANK C

BANK b

BANK A

PATCH 1
PATCH 2
PATCH 3
PATCH 4

●

Play mode/edit mode

PATCH 1

PATCH 1

PATCH 2

PATCH 2

PATCH 3

PATCH 3

PATCH 4

PATCH 4

BANK E

BANK d

PATCH 1

PATCH 1

PATCH 2

PATCH 2

PATCH 3

PATCH 3

PATCH 4

PATCH 4

BANK G

BANK F

PATCH 1

PATCH 1

PATCH 2

PATCH 2

PATCH 3

PATCH 3

PATCH 4

PATCH 4

BANK H

PATCH 1
PATCH 2
PATCH 3
PATCH 4

These terms refer to the operation state of the GFX-1. The mode is
selected with the PLAY/EDIT selector. In play mode, you select the
effects for playing, and in edit mode, you can change the effect
settings.

Operating the Unit on Battery

2.

1.

Turn the unit over, push the latch
of the battery compartment
cover, and lift the cover up.

Battery
compartment
cover

OPEN

Latch

3.

Close the battery compartment cover.

Make sure that the latch snaps shut.

GFX-1 bottom

Battery
compartment cover

Insert four fresh IEC R6 (size AA)
batteries into the battery
compartment.

Four IEC R6
(size AA) batteries

Battery polarity alternates
for each slot.

NOTE

When a dot (.) flashes on the display, the batteries are almost exhausted.
Replace them as soon as possible.

ZOOM GFX-1

5

Controls and Functions / Connections

Top Panel

DRIVE selector

Selects the distortion (effect type)
used in the DRIVE module.

Display

Shows various information necessary
for operation of the GFX-1, such as
patch number, parameter settings, etc.

STORE key

Serves for storing an
edited patch or copying
an existing patch to
another location.

GAIN [+] / [-] keys

Adjust the DRIVE
module distortion
intensity and gain.

DRIVE LED

Indicates the on/off
status of the DRIVE
module.

Foot switches [1] – [4]

Serve for effect patch switching and for
operation of the tuner function.

ZOOM GFX-1

6

Controls and Functions / Connections

PLAY/EDIT selector

Switches between play mode and edit mode and also
serves to select the module for editing.

VALUE [+] / [-] keys

Serve for adjusting setting values for various items.

BANK [W] / [Q] keys

Serve for switching effect patch banks.

ZOOM GFX-1

7

Controls and Functions / Connections

Rear Panel

[OUTPUT / PHONES] jack

This jack is used for conection to a guitar amplifier or a pair of stereo
headphones. A Y-splitter cable can also be used in this jack to conect
the GFX-1 to two amplifiers.

[INPUT] jack

Connect the guitar to this jack.

Connections

To use the GFX-1 in a mono
configuration, connect the
[OUTPUT/PHONES] jack to the amplifier
using a cable with mono phone plugs.
By using a Y cable and connecting the
output to two amplifiers, you can get a
wider sound spread from the effects. It is
also possible to connect a pair of
headphones to this jack.

ZOOM GFX-1

8

Controls and Functions / Connections

[CONTROL IN] jack

An optional expression pedal (FP01/FP02) can be connected here.

[DC IN] (AC adapter) jack

The dedicated AC adapter AD-0006 (9 V DC, 300 mA,
center minus) can be connected here.

[POWER ON/OFF] switch

Serves to turn the GFX-1 on and off.

To guard against inadvertently disconnecting the AC
adapter cable, wind the cable around the hook, as
shown in the illustration.

[CONTROL IN]
By connecting an optional
expression pedal (FP01/FP02) here,
you can adjust the effect intensity.

ZOOM GFX-1

9

Selecting Patches for Play

To try out the GFX-1, we recommend that you simply play your
instrument while switching patches.

Power-on

Connect your instrument and guitar amp to the GFX-1,
and then set the [POWER ON/OFF] switch on the rear
panel to ON.

Turn on the guitar amplifier and adjust the volume to a
suitable position.

Set GFX-1 to
play mode

When the [PLAY/EDIT]
selector is set to a
different position, set it
to "PLAY".

The currently selected bank
and patch number are shown
on the display

Patch number

Bank

HINT

Immediately after turning on
power to the GFX-1, the unit will
be in play mode even if the
[PLAY/EDIT] selector is set to a
different position.

ZOOM GFX-1

10

Switch patches

To switch patches in play
mode, use the foot
switches [1] - [4].

Selecting Patches for Play

To adjust the master volume

Press one of the VALUE [+]/[-] keys
to change the value.

The setting range is 0 - 50. When the unit is turned off
and on again, the setting will be reset to 40.

HINT

When using headphones, the master volume setting
can be used to adjust the listening volume.

Switch banks

To select among the banks A - J, use the BANK
[W]/[Q] keys.

HINT

By pressing foot switches [1] and [2] together, you can
switch to the previous bank, and by pressing foot switches
[3] and [4] together, you can switch to the next bank.

ZOOM GFX-1

11

Using the Tuner Function

The GFX-1 incorporates an auto-chromatic tuner for guitars. To use the
tuner function, the built-in effects must be bypassed (temporarily turned
off) or muted (original sound and effect sound turned off).

NOTE

The tuner function is not available if the PLAY/EDIT selector is set to a position
other than PLAY.

Switch to bypass or mute

Press the foot switch [1] - [4] that corresponds to the currently
selected patch.

Pressing and immediately
releasing the switches sets
the unit to the bypass
condition. Pressing and
holding the switches for at
least 1 second sets the unit
to the mute condition.

b

P

M

t

Bypass Mute

Tune the
guitar

Play the open
string you want to
tune, and watch
the display.

The left side of the display shows the
note which is closest to the current pitch.

A

8

A

8

ZOOM GFX-1

12

Using the Tuner Function

Adjusting the reference pitch of
the tuner

The default reference pitch of the tuner (the setting which is
established when the unit is turned on) is center A = 440 Hz.
You can fine-adjust this reference pitch if desired.

Press one of the VALUE [+] / [-] keys.

The current reference pitch is shown for about 2
seconds. The default setting is "40" (center A = 440 Hz).

Use the VALUE [+] / [-] keys to adjust the setting.

The setting range is 35 - 45 (center A = 435 to 445 Hz).

HINT

When power to the unit is turned off
and on again, the setting reverts to the
default of "40" (center A = 440 Hz).

Return to play
mode

Press one of the foot
switches [1] - [4].

The patch of that switch is
called up.

Pitch is high Pitch is correct

Indication turns faster the more the pitch is off.

Pitch is low

The right side of the display
shows a symbol that indicates by
how much the tuning is off.

Tune the other strings in
the same way.

ZOOM GFX-1

13

Making/Changing DRIVE Module Settings

The DRIVE module comprises various distortion types and gain settings,
which can be adjusted with the dedicated selector and keys at any time.

HINT

The following operation can be carried out in play mode or edit mode.

Select the DRIVE module distortion
type

Use the DRIVE selector to select the desired distortion
type (effect type).

The selected effect type
name is shown for
about 2 seconds on the
display. For a detailed
list of effect types, see
the section "Effect
Parameters" at the end
of this manual.

F

d

HINT

By setting the PLAY/EDIT
selector to the DRIVE
position, you can check
the current effect type.

NOTE

When the DRIVE LED is out, the DRIVE module is off. If you
switch to a different effect type in this condition, the module is
automatically turned on.

ZOOM GFX-1

14

Making/Changing DRIVE Module Settings

Adjust the DRIVE module gain

Press one of the GAIN [+] / [-] keys.

Depending on which effect type is currently
selected, distortion depth or signal gain changes.
The GAIN parameter value is shown for about 2
seconds on the display.

2

6

To switch the
DRIVE module
on or off

Press the GAIN [+] / [-]
keys together.

When the DRIVE module is
switched off, the DRIVE
LED goes out.

HINT

The change made in this way is
only temporary. When you
select a different patch, the
setting will revert to the original
condition. If you want to keep
the change, store the patch, as
described on page 18.

ZOOM GFX-1

15

Editing a Patch

Editing means changing the various effect parameter settings of a patch.
Use an existing patch as a starting point and adjust the parameters to
create your own and original sound.

Select the effect parameter

Use the PLAY/EDIT selector to select the module and
parameter you want to edit.

The GFX-1 switches to the edit mode and the value of the currently
selected effect parameter appears on the display. When the GFX-1 is in
edit mode, a dot is shown in the bottom right corner of the display.

Parameter value

3

0

Lit

For information
on effect modules
and parameters,
see the section
"Effect
Parameters" at
the end of this
manual.

HINT

The DRIVE
module can also
be directly edited
by using the
DRIVE selector
and GAIN [+] / [-]
keys (→ p. 14).

ZOOM GFX-1

16

Terminate the edit mode

Set the PLAY/EDIT selector to "PLAY".
The unit reverts to the play mode.

Editing a Patch

Adjust the parameter setting
value

Use the VALUE [+] / [-] keys.

The keys operate as follows.

• Keeping one key depressed: Value changes continuously.

• Hold down one key while pressing the other key:

Va lue increases/ decreases rapidly.

• Pressing both keys simultaneously:

Switch to next effect type in same module.

Changing the
module on/off
setting

Press one of the foot switchs
[1] – [4].

This switches the effect module
selected with the PLAY/EDIT selector
on or off.

NOTE

When the [PLAY/EDIT] selector is set to
"PATCH LEVEL" the module cannot be
turned off.

NOTE

The editing changes made in this way are only temporary. When you
return to the play mode and select a different patch, the settings will
revert to the original condition. If you want to keep the change, store the
settings before switching the patch (→ p.18 ).

ZOOM GFX-1

17

Storing/Copying Patches

An edited patch can be stored at any desired location in the internal
memory of the unit. It is also possible to copy an existing patch and store
it at another location.

Press the STORE key in play
mode or edit mode

The bank and patch number on the display are flashing.

A

1

ZOOM GFX-1

18

Specify the store/copy target location

Use the BANK [W]/[Q] keys and the
foot switches [1] - [4] to specify the

b

patch to be used as a store/copy
target.

4

Storing/Copying Patches

Press the STORE key once more

When the store/copy process is completed, the
unit reverts to the original mode, with the target
patch being selected.

b

4

NOTE

When the store/copy process is executed, the
previous content of the store target is overwritten
and cannot be restored if it was a user-created
patch. You should therefore take care when
selecting a target patch. However, the factory
default settings of an individual patch or all patches
can be restored, as described on page 21.

To cancel the store/copy
process

Press the VALUE [+]/[-] keys or GAIN
[+]/[-] keys instead of the STORE key.

The store process is aborted and the unit
reverts to the previous mode.

NOTE

The store process is also canceled when the
[PLAY/EDIT] selector or the [DRIVE] selector
is operated.

ZOOM GFX-1

19

Using a Separately Available Expression Pedal

The GFX-1 is equipped with a [CONTROL IN] jack that accepts an
optional expression pedal. Connect and use the pedal as follows.

■

Using the expression pedal (FP01/FP02)

If you connect an optional expression pedal to the [CONTROL IN] jack,
the pedal can be used to adjust the volume or as a real-time controller for
an effect parameter.
For information on parameters that can be controlled with the FP01/
FP02, see pages 25 - 36.

1. Insert the plug of the FP01/FP02 into the [CONTROL IN]
jack and turn the GFX-1 on.

2. Select the patch in play mode and move the expression
pedal up or down.

Depending on what is programmed for that patch, the pedal will
change the volume or an effect parameter.

HINT

The pedal can also be used in edit mode.

NOTE

If you connect the expression pedal while the GFX-1 is on, malfunction may
occur. Be sure to connect the pedal first, and then turn the GFX-1 on.

ZOOM GFX-1

20

Restoring the Factory Defaults

The GFX-1 comes with 40 recommended patches (factory default
patches). Even if you overwrite any of these patches, you can restore the
original contents of the patch at any time.
There are two ways of restoring factory defaults. "All Initialize" returns
the entire set of patches to the original condition. "Factory Recall"
restores a specific patch to the original condition.

1. While holding down the STORE key, turn the unit
on.

The indication "AL" flashes on the display.

■

To perform All Initialize

2. Press the STORE key once more.

All patch settings are returned to the factory default condition, and the
unit switches to play mode. To cancel All Initialize, press the VALUE
[-] key.

NOTE

All user-created patches will be lost when performing All Initialize. Use this
function with care.

■

To perform Factory Recall

2. Use the BANK [W
switches [1] - [4] to select the patch you want to
return to the original condition.

The specified bank and patch number flashes on the
display.

3. Press the STORE key once more.

The settings of the specified patch are returned to the factory default
condition.

If desired, repeat steps 2 and 3 to restore other patches. To terminate the
Factory Recall operation, press the VALUE [-] key. The unit will switch
to the play mode at this point.

]/[Q

] keys and the foot

A

C

L

2

ZOOM GFX-1

21

Effect Sequence

A patch of the GFX-1 can be thought of as 8 effect modules connected in
series, as shown in the illustration below. Depending on the on/off setting
of the individual modules, you can use all eight effect modules together
or use only specific modules.

●

Effect module sequence and effect types

Effect module

4 BAND

EQ

ZNREQ

ZNR

AMP

COMBO

BRIGHT

COMBO

STACK

CHORUS
FLANGER
FLANGER

CHORUS

PHASE
PHASE

CHORUS
DOUBLING
DOUBLING

CHORUS

TREMOLO
TREMOLO

CHORUS

CHORUS

CHORUS
RING MOD
RING MOD

CHORUS

SLOW ATTACK

SLOW ATTACK
PITCH SHIFT

PITCH SHIFT

STEP
STEP

CRY1
CRY2

CRY

DLY/REV

COMP/LIMIT

COMPRESSOR

LIMITER

AUTO WAH

DRIVE MOD/PITCH

WAH

FDR CLN

US BLUES

PEDAL
BOOST

MS DRV
BG DRV

PVY DRV

OD
DIST
LEAD
FUZZ

METAL

ACOUSTIC

For some effect modules, you can select
among several effect types. For example, the
MOD/PITCH module offers the choices
CHORUS, FLANGER, PHASE, TREMOLO,
etc.

DELAY

ECHO
HALL

ROOM

Effect

type

In this module, you can also have two effect types operating in

→

succession, such as FLANGER

→

CHORUS.

ZOOM GFX-1

22

CHORUS or TREMOLO

Effect Parameters

This section explains all effect types and parameters in the effect
modules.

●

How to read the "Effect Parameters" listing

Display

Shows the settings that can be selected for each module with the VALUE
[+] / [-] keys. Depending on the selected effect module, the effect type,
parameter setting value, or both are shown.

Effect type
only shown

F

U

Effect type

Parameter setting
value only shown

4

0

Setting value

Effect type and parameter
setting value shown

Effect type

PLAY/EDIT selector

The illustration shows the selector position for calling up the effect
module/effect parameter.

WAH

WAH module

This module comprises auto wah and pedal wah for use
with the expression pedal. Use the VALUE [+] / [-] keys to
select the effect type and adjust the effect intensity.

AUTO WAH

This effect type automatically varies the amount of wah dependent on playing
intensity. Higher setting values result in higher input sensitivity for the auto wah
effect, so that wah operates also with low input signal levels.

PEDAL AUTO WAH

The expression pedal adjusts the sensitivity for auto wah.

PEDAL BOOST

This effect type allows using the expression pedal for pedal wah, where
the pedal can be used to shift the emphasized frequency up or down.

OFF

Turns the WAH module off.

Module on/off

For every effect module, selecting
the "oF" setting will turn the
module off. (The "oF" setting
cannot be selected if the
[PLAY/EDIT] selector is set to
"PATCH LEVEL" .)

･ Except for pedal wah, when an effect type with the pedal icon is

HINT

selected, the sound will reflect a representative setting of that module.

･ If no effect type with a pedal icon is selected within a patch, the

expression pedal operates as volume pedal.

Pedal icon

When you select this effect type, the
respective effect module can be controlled
in real time with an expression pedal
connected to the GFX-1. Which parameter
is changed by moving the pedal also
depends on the effect type.

C

9

Setting value

ZOOM GFX-1

23

Effect Parameters PATCH LEVEL COMP/LIMIT

PATCH LEVEL

PATCH LEVEL

Adjusts the overall volume of the patch. A value of 25 corresponds to unity
gain (input level and output level are equal).

COMP/LIMIT

COMP/LIMIT module

This module comprises the compressor and limiter
effect types. Use the VALUE [+] / [-] keys to select the
effect type and adjust the effect intensity.

■

COMPRESSOR

This effect type attenuates high-level signal components and boosts low-level
signal components, thereby keeping the overall signal level within a certain
range. The effect prolongs sustain and makes the sound more uniform. Higher
setting values result in stronger compression.

LEVEL

Original sound

LEVEL

Compressor

ZOOM GFX-1

24

TIME

■

LIMITER

This effect type attenuates peak levels and prevents overload of the next
module. Higher setting values result in stronger limiter action.

LEVEL

Original sound

LEVEL

Limiter

TIME

TIME

TIME

Effect Parameters COMP/LIMIT WAH

■

OFF

Turns the COMP/LIMIT module off.

WAH

WAH module

This module comprises auto wah and pedal wah for use
with the expression pedal. Use the VALUE [+] / [-] keys
to select the effect type and adjust the effect intensity.

■

AUTO WAH

This effect type automatically varies the amount of wah dependent on playing
intensity. Higher setting values result in higher input sensitivity for the auto
wah effect, so that wah operates also with low input signal levels.

■

PEDAL AUTO WAH

The expression pedal adjusts the sensitivity for auto wah.

■

PEDAL BOOST

Creates a sound where a certain frequency is boosted when pedal wah is half
open. Higher setting values result in higher emphasized frequency.

■

PEDAL WAH

This effect type allows using the expression pedal for pedal wah, where
the pedal can be used to shift the emphasized frequency up or down.

■

OFF

The WAH module is off.

ZOOM GFX-1

25

Effect Parameters DRIVE

DRIVE

DRIVE module

In addition to 9 distortion type effects, this module also
comprises two clean effect types.
Use the VALUE [+] / [-] keys to select the effect type and
the GAIN [+] / [-] keys to adjust the gain.

Setting the gain to "dP" allows controlling the
gain with the expression pedal (for all effect types
of the DRIVE module).

■

FDR CLN (FDR Clean)

Simulates the clean sound of a built-in type tube amplifier.

■

US BLUES

Solid crunch sound for playing the Blues.

■

MS DRV (MS Drive)

Drive sound emulating a British style tube stack amp.

■

BG DRV (BG Drive)

Drive sound emulating a tube stack amp with a tight and controlled midrange.

■

PVY DRV (PVY Drive)

High-gain tube amplifier drive sound, great for heavy metal.

■

OD (Overdrive)

Extended overdrive sound with the character of tube amplifier distortion.

■

DIST (Distortion)

Distortion similar to driving a three-stack amp in the hard rock style.

■

LEAD

Smooth, bright distortion sound.

■

FUZZ

Sixties style fuzz sound with fat bass.

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26

Effect Parameters DRIVE EQ

■

METAL

Heavy metal type sound with emphasized bass and treble. Also suitable for 7­string guitar sound.

■

ACOUSTIC

Changes the sound of an electric guitar into that of an acoustic guitar.

■

OFF

Turns the DRIVE module off.

EQ

EQ module (basic parameter)

This module comprises a 4-band equalizer. Use the
VALUE [+] / [-] keys to select the EQ characteristics.

■

4-BAND EQ (4-Band Equalizer)

Allows boost or cut in the bass/middle/high/presence band. You can select one
of 50 available patterns (1 - 50).

1 - 10:

Lower values result in attenuated highs and emphasized

lows.

11 - 20:

Lower values result in lower emphasized frequency.

21 - 24:

Lower values result in emphasized midrange.

25:

Flat characteristics

26 - 30:

Higher values result in emphasized highs.

31 - 40:

Higher values result in higher emphasized frequency.

41 - 50:

■

OFF

Turns the EQ module off.

Higher values result in emphasized presence and lows.

ZOOM GFX-1

27

Effect Parameters CONTOUR ZNR/AMP

CONTOUR

EQ module extended parameters

Allows fine adjustment of EQ characteristics selected
with the EQ module basic parameters.

■

CONTOUR

Using the 0 value as a reference (flat setting), negative values cause an
increasing boost in the low range and positive values cause an increasing
boost in the high range. When the EQ module is On, this parameter is always
active. Check this parameter if the 4-band EQ effect type setting does not
seem to produce the desired results.

(Off

indication)

ZNR/AMP

ZNR/AMP module

This module comprises ZNR (ZOOM Noise Reduction)
for reducing noise during play pauses or silent
passages, and an amp simulator which simulates the
sound of various guitar amplifiers. Use the VALUE [+] /
[-] keys to adjust the ZNR threshold or select the type of
amplifier.

■

ZNR

ZNR (ZOOM Noise Reduction) serves for reducing noise during play pauses
or silent passages. Higher setting values result in more efficient noise
reduction. Set the value as high as possible without causing the sound to be
cut off unnaturally.

■

COMBO

Simulates a combo type amplifier. When this setting is selected, the amp
simulator is on and ZNR is off.

ZOOM GFX-1

28

Effect Parameters ZNR/AMP

■

ZNR + COMBO

ZNR and combo amp simulator are both on. Increasing the right-digit value
results in more efficient noise reduction.

■

BRIGHT COMBO

Simulates a bright sounding combo type amplifier. When this setting is
selected, the amp simulator is on and ZNR is off.

■

ZNR + BRIGHT COMBO

ZNR and bright combo amp simulator are both on. Increasing the right-digit
value results in more efficient noise reduction.

■

STACK

Simulates a stack type guitar amplifier. When this setting is selected, the amp
simulator is on and ZNR is off.

■

S

S

ZNR + STACK

2

ZNR and stack amp simulator are both on. Increasing the right-digit value
results in more efficient noise reduction.

9

■

OFF

The ZNR/AMP module is off.

ZOOM GFX-1

29

Effect Parameters MOD/PITCH

MOD/PITCH

MOD/PITCH module

This module comprises modulation effects such as
chorus and flanger, as well as a pitch shifter. Use the
VALUE [+] / [-] keys to select the effect type and adjust
the effect intensity.

■

CHORUS (Chorus)

This effect mixes a variable pitch-shifted component to the original signal,
resulting in full-bodied and expansive sound. Higher setting values result in a
more pronounced chorus effect.

TIME

PITCH

PITCH

+

0

-

+

0

-

PITCH

+

Original sound

0

-

■

PEDAL CHORUS

The expression pedal adjusts the chorus effect depth of the effect sound.

■

FLANGER

This effect produces a unique, undulating sound by shifting the pitch up and
down. Higher setting values result in faster modulation.

■

FLANGER➔CHORUS

This effect type is a serial connection of flanger and chorus. Higher setting
values result in faster flanger modulation. (Chorus intensity is fixed.)

Effect sound
(left channel)

TIME

Effect sound (right channel)

TIME

ZOOM GFX-1

30

■

PEDAL FLANGER

The expression pedal adjusts the modulation speed of the flanger effect.

Effect Parameters MOD/PITCH

■

PHASE SHIFT (Phaser)

This effect mixes a phase-shifted
component to the original sound,
resulting in a pulsating character.
Higher setting values result in faster
modulation.

LEVEL

+

0

Original sound

Effect sound

TIME

-

■

PHASE SHIFT➔CHORUS

This effect type is a serial connection of phaser and chorus. Higher values
result in faster phaser modulation. (Chorus intensity is fixed.)

■

PEDAL PHASE SHIFT

The expression pedal adjusts the modulation speed of the phaser effect.

■

DOUBLING

This effect adds very short delay components to the original signal, which
gives the sound a more full-bodied character such as when several instruments
are playing in unison. Higher setting values result in a more pronounced
doubling effect.

■

DOUBLING➔CHORUS

This effect type is a serial connection of doubling and chorus. Higher values
result in a more pronounced doubling effect. (Chorus intensity is fixed.)

■

PEDAL DOUBLING

The expression pedal adjusts the depth of the doubling effect.

■

TREMOLO

This effect periodically varies the volume. Higher setting values result in a
faster tremolo.

LEVEL

Original sound Signal after tremolo effect

+

0

-

TIME

LEVEL

+

-

0

TIME

ZOOM GFX-1

31

Effect Parameters MOD/PITCH

■

TREMOLO➔CHORUS

This effect type is a serial connection of tremolo and chorus. Higher setting
values result in faster tremolo. (Chorus intensity is fixed.)

■

PEDAL TREMOLO

The expression pedal adjusts the speed of the tremolo effect.

■

STEP

This effect introduces a filter which changes randomly, resulting in an auto­arpeggio sound. Higher setting values result in faster step sound change.

■

STEP➔CHORUS

This effect type is a serial connection of step and chorus. Higher setting values
result in faster step sound change. (Chorus intensity is fixed.)

■

PEDAL STEP

The expression pedal adjusts the speed of the step effect.

■

CRY1

This effect changes the sound in a way similar to a talking simulator. Higher
setting values result in a more pronounced sound change.

■

CRY2

This is a cry effect with a different sound character from CRY1. Higher
setting values result in a more pronounced sound change.

■

CRY➔CHORUS

This effect type is a serial connection of cry and chorus. Higher setting values
result in a more pronounced cry type sound change. (Chorus intensity is
fixed.)

■

PEDAL CRY

The expression pedal adjusts the input sensitivity of the cry effect.

ZOOM GFX-1

32

Effect Parameters MOD/PITCH

■

RING MOD (Ring Modulator)

This effect adds amplitude modulation to the signal, resulting in a metallic
sound. Higher setting values result in higher modulation frequency.

■

RING➔CHORUS (Ring Modulator➔Chorus)

This effect type is a serial connection of ring modulator and chorus. Higher
setting values result in higher ring modulator frequency. (Chorus intensity is
fixed.)

■

PEDAL RING MOD

The expression pedal adjusts the modulation frequency of the ring
modulator.

■

SLOW ATTACK (Slow Attack)

This effect reduces the attack rate of the sound, resulting in a volume playing
style sound. Higher setting values result in a slower attack rate.

■

SLOW ATTACK➔PITCH SHIFT

This effect type is a serial connection of slow attack and pitch shifter. Higher
setting values result in a slower attack rate. (The pitch shifter is fixed to the 1
octave up setting.)

■

PEDAL SLOW ATTACK

The expression pedal adjusts the rise time of the slow attack.

ZOOM GFX-1

33

Effect Parameters MOD/PITCH

■

PITCH SHIFT

This effect varies the pitch of the original sound. You can select one out of
nine preset pitch shift patterns (P1 - P9).

•P1: A component shifted by 1 octave down is mixed to the original
sound.

•P2: A component shifted by a perfect fifth down is mixed to the
original sound.

•P3: A chorus effect is added to the P2 setting.

•P4: A component shifted by a perfect fourth up is mixed to the
original sound.

•P5: A chorus effect is added to the P4 setting.

•P6: A component shifted by 1 octave up is mixed to the original
sound.

•P7: A slightly pitch-shifted component is mixed to the original
sound, resulting in a chorus with slight modulation.

•P8: A component shifted by a perfect fourth up and down is mixed
to the original sound.

•P9: A component shifted by 1 octave up and down is mixed to the
original sound.

■

PEDAL PITCH DOWN

The expression pedal shifts the pitch of the original sound downwards.
The adjustment range is 0 to -2 octaves.

■

PEDAL PITCH UP

The expression pedal shifts the pitch of the original sound upwards and
shifted sound is mixed to the original. The adjustment range is 0 to +1
octave.

■

OFF

Turns the MOD/PITCH module off.

ZOOM GFX-1

34

Effect Parameters DLY/REV

DLY/REV

DLY/REV module (basic parameters)

This module comprises delay and reverb effects. Use
the VALUE [+] / [-] keys to select the effect type and
adjust the effect intensity.

■

DELAY

This is a conventional digital delay effect.
By using the output in stereo, you can
achieve a ping-pong delay where the delay
sound alternates between the left and right
channels. The right-digit setting values
control the feedback (number of repetitions)
and the mixing ratio between original sound
and effect sound..

■

PEDAL DELAY

The expression pedal adjusts the mixing amount of the effect sound.

■

ECHO

This is a delay effect with a warm sound similar to a tape echo. By using the
output in stereo, you can achieve a ping-pong delay where the delay sound
alternates between the left and right channels. The right-digit setting values
control the feedback (number of repetitions) and the mixing ratio between
original sound and effect sound.

■

PEDAL ECHO

The expression pedal adjusts the mixing amount of the effect sound.

■

HALL

This is a reverb effect that produces a sound similar to the reverberation in a
concert hall. Higher right-digit setting values result in stronger reverb.

LEVEL

Original sound

Delay sound

Delay time

TIME

■

PEDAL HALL

The expression pedal adjusts the mixing amount of the effect sound.

ZOOM GFX-1

35

Effect Parameters DLY/REV TIME

■

ROOM

This is a reverb effect that simulates the reverberation in a room. Higher right­digit setting values result in stronger reverb.

■

PEDAL ROOM

The expression pedal adjusts the mixing amount of the effect sound.

■

OFF

Turns the DLY/REV module off.

TIME

DLY/REV module (extended parameters)

These parameters serve to adjust the delay time or
reverb time for the effect type selected with the DLY/
REV module basic parameters.
The parameters are linked to the DLY/REV module and
are off when the DLY/REV module is off.

■

DELAY TIME

(When DELAY or ECHO is selected as effect type)
Adjusts delay time in 10 ms units. The adjustment range is 10 - 370 ms.
(Example: A setting value of 15 gives a delay time of 150 ms.)

■

REVERB TIME

(When HALL or ROOM is selected as effect type)
Sets the reverb time in the range from 1 - 10. Higher right-digit setting values
result in longer reverb time.

(Off

indication)

ZOOM GFX-1

36

Specifications

Effect type
Effect module
Patch
Sampling frequency
A/D conversion
D/A conversion
Display
Input

Rated input level -20 dBm
Input impedance 470 kilohms

Output

Max. output level +3 dBm
Output load impedance 10 kilohms or more

Control input
Power requirements

AC adaptor DC 9 V center minus, 300 mA (ZOOM AD-0006)
Batteries 4 x IEC R6 (size AA);

Dimension
Weight
Option

* 0 dBm = 0.775 Vrms
* Design and specifications are subject to change without notice.

34/max. 9 simultaneous
Max. 8 simultaneous
4 patches x 10 banks = 40 patches

31.25 kHz
20-bit, 64-times oversampling
20-bit, 8-times oversampling
2-digit, 7-segment LED
Standard mono phone jack

Standard stereo phone jack (line/headphones
combined)

FP02 input

Approx. battery life 24 hours (alkaline batteries)
268(W) x 117(D) x55(H) mm

1.0kg without batteries
Expression pedal FP02

Troubleshooting

●

No power

Refer to "1 Power-on" on page 10.

●

No sound

• Is an expression pedal (FP01/FP02)
connected to the GFX-1 fully raised?

For some patches, the expression pedal
controls the volume and the pedal must
be pushed down to obtain a suitable
volume.

• Is the master volume setting low?

Refer to "5 To adjust the master
volume" on page 11.

●

High level of noise

• Is ZOOM AC adapter being used?

Be sure to use only the AD-0006
adapter (9 V DC, 300 mA, center
minus plug).

• Is ZNR setting suitable?

Set the ZNR value as high as possible
without producing an unnatural cut of
the instrument sound.

● Battery life is short

Are manganese batteries being used?

Continuous operation time is 24 hours
with alkaline batteries but only 7 hours
with manganese batteries. The use of
alkaline batteries is recommended.

ZOOM GFX-1

37

Usage Precautions

●

Electrical interference

For safety considerations, the GFX-1 has been designed to provide
maximum protection against the emission of electromagnetic
radiation from inside the device, and protection from external
interference. However, equipment that is very susceptible to
interference or that emits powerful electromagnetic waves should
not be placed near the GFX-1, as the possibility of interference
cannot be ruled out entirely.

With any type of digital control device, the GFX-1 included,
electromagnetic interference can cause malfunctioning and can
corrupt or destroy data. Care should be taken to minimize the risk
of damage.

●

Cleaning

Use a soft, dry cloth to clean the GFX-1. If necessary, slightly
moisten the cloth. Do not use abrasive cleanser, wax, or solvents
(such as paint thinner or cleaning alcohol), since these may dull the
finish or damage the surface.

Please keep this manual in a convenient place for future reference.

ZOOM GFX-1

38

Patch List

Bank No. Patch Name Comment

[A]

DEMO

[B]

LOUD/HEAVY

[C]

MODERN

ROCK

[D]

GRUNGE/

PUNK

[E]

CLASSIC

[F]

MULTI FX

[G]

TRAD

[H]

JAZZ/BLUES

[I]

FUNK

[J]

NEW AGE

1 Attack
2 Harpsichord Guitar
3 Fuse Lead
4 Passion
1 Extreme Metal
2 Mystical
3 Def-T Rhythm
4 Def-T Drive
1 Emotion
2 Radio-H Clean
3 Wild Crunch
4 Double Rage
1Green Punk
2 Delayed Clean
3 Kurdt Crunch
4 Super Drive
1 Old Stack
2 Rockabilly
3 Jeff's Pitch
4 White LPC
1 Heavy Jet
2 Fantasy
3Talk & Cry
4 Step Stream
1 70's Wah Drive
2 Beat Box
3 LK Flange
4 LP-Paf
1 Blues Drive
2 Pat M
3Warm Tone
4 Match
1 Heavy Funk
2 American Clean
3 Crunch P-Wah
4 Soul/Funk
1 Hi-Gain Drive
2 Neo Phase
3 Digi Dist
4 Radio-H Wall

Cool crunch sound with strong attack
Harpsichord sound
Smooth lead sound
Passionate fuzz
Extreme American metal sound
Rich delay good for 120-BPM tempo
Crunch sound for heavy rock
Distortion for heavy rock
Expressive distortion
Tremolo sound suitable for arpeggio
Solid crunch sound
Great for single-note riff in drop-D tuning
Pop punk sound
Good for violin playing in 120 BPM
Slightly distorted crunch sound
Multipurpose bright distortion
Nostalgic stack amp sound
Rockabilly sound with doubling effect
Octaver
Lead sound of humbucker pickup
Drastic jet sound
Magical clean sound
Talking modulator sound
Avant-garde step sound
1970s sound by wah and drive
British sound for backing
Versatile flanging sound
Old humbucker sound faithful to nuances
Drive sound for blues
New York jazz sound
Slightly distorted acid jazz sound
Superb crunch sound
Heavy funk sound
Clean sound of built-in vacuum tube amp
Crunch sound with enhanced pedal wah
Auto wah for funk
Powerful distortion
Beautiful phaser
Distortion compatible with big beat
Modern stack amp sound

ZOOM GFX-1

39

The FCC regulation warning (for U.S.A.)

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 Rules. 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. If 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.

ZOOM CORPORATION

ITOHPIA Iwamotocho 2chome Bldg. 2F, 2-11-2, Iwamoto-cho,
Chiyoda-ku, Tokyo 101-0032, Japan
Web Site: http://www.zoom.co.jp

GFX-1 - 5000-1