Mooer GEM Box User manual

Guitar Multi-Effects Processor
Owner’s Manual

01
Contents
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Precautions
Items Explanation
Main Features
Battery Operation
Panel Instruction
Connections
Operation
Effects Explanation
Specification
Troubleshooting
Appendix
Patch Selecting
Drum Rhythm
Tuner
Expression Pedal
Patch Editing
Patch Storing/Copying
Patch Pre-Select Recall Function
Factory Reset
Patch List
Drum Rhythm List

02
Precautions
* PLEASE READ CAREFULLY BEFORE PROCEEDING *
Power Supply
Please connect the designated AC adapter to an AC outlet of the correct
voltage.
Please be sure to use only an AC adapter which supplies 9V DC, 300
mA, center minus.
Unplug the AC power adapter when not using or during electrical storms.
Connections
Always turn off the power of this and all other equipments before
connecting or disconnecting, this will help prevent malfunction and / or
damage to other devices. Also make sure to disconnect all connection
cables and the power cord before moving this unit.
Location
To avoid deformation, discoloration, or other serious damage, do not
expose this unit to the following conditions:
Direct sunlight
Heat sources
Magnetic fields
Extreme temperature or humidity
Excessive dusty or dirty location
High humidity or moisture
Strong vibration or shock
Interference with other electrical devices
Radios and televisions placed nearby may experience reception
interference. Operate this unit at a suitable distance from radios and
televisions.
Cleaning
Clean only with a soft, dry cloth. If necessary, slightly moisten the cloth.
Do not use abrasive cleanser, cleaning alcohol, paint thinners, wax,
solvents, cleaning fluids, or chemical-impregnated wiping cloths.
Handling
Do not apply excessive force to the switches or controls.
Do not let paper, metallic, or other objects into this unit.
Take care not to drop the unit, and do not subject it to shock or excessive
pressure.

03
Items Explanation
Patch
A patch is comprised of information about the on/off status and effect
parameter settings used in each module.
Bank
A bank is a group of ten patches. GEM Box has 8 banks, labelled with
numbers 0 to 3 (unchangeable preset banks) and letters A to d
(editable user banks).
Effect module
A patch can be thought of as a combination of up to 8 single effects.
Each such effect is referred to as an effect module.
Effect type
Some effect modules have several different effects which are referred
to as effect types. Only one of these can be selected at a time.
Effect parameter
All effect modules have various parameters that can be adjusted.
These are called effect parameters or simply parameters. When
thinking of an effect module as a compact effect, the parameters
change the tone and effect intensity similar to the knobs on the device.
Mode
Mode is the status of different function keys and controls, GEM Box
has Play Mode for selecting and playing patches, Rhythm Mode for
editing a drum rhythm, Edit Mode for modifying effects, and Store
Mode for saving patches.

04
Main Features
Battery Operation
8 Effect Modules
60 Effect Types
40 Preset Patches
40 User Patches
40 Drum Rhythms
Assignable Expression Pedal
Precise Tuning function
Patch Pre-Select Recall function
Compact operation interface
Lightweight and tiny for easy transportation
AC adapter 9V DC power supply
AA battery (x4) power supply
1. Turn off the GEM Box and open the battery holder on the bottom.
2. Insert 4 AA batteries and close the battery holder.
Press latch to release and then lift cover.
Latch
Four batteries (size AA)
Note: When the baeries are geing low, the display will show to indicate this
situation.
Note: When using baeries, it is suggested to disconnect the guitar cable plug from the
[INPUT] jack when not using the device, to conserve baery power.

05
EQ
NR/CAB
GAIN
DRIVE
COMP/WAH
PATCH LEVEL
RATE
DELAY
D.TIME
REVERB
DECAY
MODULATION
PLAY
STORE
RHYTHM
PEDAL
PLAY / STOP MODULE BYPASS
VALUE
EXP. PEDAL
BYPASS / TUNER
HOLD FOR MUTE TUNING
PATCH
Press
BANK PATCH
# EDIT
Panel Instruction
INPUT OUTPUT
DC9V
300mA
(PHONES)
1
4
8 91011
5
2 673
Guitar Multi-Effects Processor

06
Module Selector: Switches between every function module. In
patch edit mode, this knob selects the module/parameter for operation.
VALUE Knob with Enter Button: Dial the knob for setting master
level, or changing parameter values. Press the button to switch effect
type, ensure storing, etc.
LED Display: Shows bank and patch numbers, setting values, and
other information for operating.
PATCH – [PLAY/STOP] Footswitch: Selects patches
(backwards), controls the tuner, start/stop drum rhythm, and other
functions.
PATCH + [MODULE BYPASS] Footswitch: Selects patches
(forwards), controls the tuner, bypass effect module, and other
functions.
Expression Pedal: Adjusts volume or some effect parameters.
EXP. PEDAL LED: Indicates the status of the expression pedal.
INPUT Jack: 1/4” mono audio jack, for connecting guitar. When
operating GEM Box on batteries, plugging guitar cable into this jack will
turn on the unit.
OUTPUT [PHONES] Jack: 1/4” stereo audio jack, for connecting
headphone or guitar amplifier. Using a mono cable can output the
signal to an amplifier, or use a Y cable to output the signal to two
amplifiers. Also can plug a stereo headphone into this jack.
DC 9V Jack: For power supply, use a 9-volt DC regulated by AC
adapter, 300mA (plug polarity is positive on the barrel and negative in
the center).
Battery Holder: For installing batteries (AA x 4).
10
09
08
07
06
05
04
03
02
01
11
Panel Instruction

07
INPUT OUTPUT
DC9V
300mA
(PHONES)
Connections
Guitar Headphones
Guitar amplifier Guitar amplifier
AC adapter

08
Operation
Patch Selecting
Power On
Plug the cable of AC Adapter
(9V, 300mA, center minus) into
the [DC 9V] Jack, when using
batteries, plug the guitar cable
into this jack will turn the device
on.
Selecting Patches
Set the Module Selector to [PLAY],
the LED display will show the
information of bank and patch
number, step on [PATCH +/-]
footswitch to change patches (Hold
one footswitch to switch patches
quickly).
Pressing [PATCH +] footswitch time and again (or holding [PATCH +]
footswitch) cycles through patches in the order ~ ... ~ , ~ ...
~ , . Pressing or holding [PATCH –] footswitch will switch
patches in the opposite order.
Adjusting the master volume
Set the Module Selector to [PLAY],
rotate [VALUE] knob to adjust the
master volume of GEM Box (when
setting up the master volume, LED
display will show the current level).
The range of master volume is ~ ,
70 is the default value.
01
03
02
BANK
Bank
name
Patch
name
PATCH
# EDIT
BANK PATCH
# EDIT
INPUT OUTPUT
DC9V
(PHONES)

09
Drum Rhythm
Selecting Drum Rhythm Type
Set the Module Selector to [RHYTHM],
LED display will show the rhythm type
firstly, and then rotate the [VALUE]
knob to select the rhythm type ( ~ ).
Adjusting Drum Rhythm Volume
Set the Module Selector to [RHYTHM],
LED display will show the rhythm type
firstly, and then press [VALUE] button
once, at that time, LED displays the
drum rhythm volume, then rotate the
[VALUE] knob to change the rhythm
volume ( ~ , the default value is ).
Changing Drum Rhythm Tempo
Set the Module Selector to
[RHYTHM], LED display will show the
rhythm type firstly, and then press
[VALUE] button twice, at that time, the
number displayed in LED indicates the
tempo of drum rhythm, then rotate the
[VALUE] knob to change tempo.
Start/Stop Drum Rhythm
When in RHYTHM mode or EDIT mode (Except PLAY/STORE
mode), press [PATCH –] footswitch will start the drum rhythm. When
the rhythm is playing, press [PATCH –] footswitch again to stop.
Note: You can’t stop the drum rhythm in PLAY/STORE mode.
01
03
04
02
BANK Drum Rhythm Type PATCH
# EDIT
BANK Drum Rhythm Volume PATCH
# EDIT
BANK Drum Rhythm Tempo PATCH
# EDIT
The range of the displaying tempo value is ~ , indicate the real
tempo 60~270 BPM, each rhythm has its own default tempo value.

10
Tuner
Entering Bypass Tuning Mode
When in PLAY mode, press both [PATCH –]
and [PATCH +] footswitches together to
enter bypass tuning mode. LED will display
for 1 second, then begin to show tuning
indication.
Entering Mute Tuning Mode
When in PLAY mode, hold both [PATCH –]
and [PATCH +] footswitches together longer
than 2 seconds to enter mute tuning mode. In
course of this operation, LED will display
for 1 second then turn to display , when
releasing the footswitch, LED begin to show
tuning indication.
Note: In mute tuning mode, no sound will phonate through the output of
GEM Box.
Tuning
Play one guitar string at a time, and adjust the guitar pitch as
LED’s instruction.
Quit Tuner
When in tuning mode, press both [PATCH –] and [PATCH +]
footswitches together or anyone of these 2 footswitches to quit
tuning state. GEM Box will return to PLAY mode.
01
03
03
02
BANK PATCH
# EDIT
BANK PATCH
# EDIT
BANK PATCH
# EDIT
#
#
##
#
BANK PATCH
# EDIT
The left side shows the current pitch. The right side indicates how much the tuning
is off.
The indication rolls faster, the more the
pitch is off.
SharpCorrectFlat

11
Expression Pedal
Volume Control
If the [EXP. PEDAL] LED is not lighted up, the expression pedal
will be a volume pedal for controlling the master level of GEM Box.
Effect Control
If the [EXP. PEDAL] LED is lighted up, the expression pedal will be
an expression pedal for controlling the effect’s parameter which
was set up in PEDAL setting.
Control Assign
Set the Module Selector to [PEDAL], the LED display will show the
controlling object of the expression pedal.
There are 7 kinds of parameter can be controlled by the pedal,
LED will show the type of parameter in control:
01
02
03
Control Target LED Display Control Parameter
Wah Central Frequency
Drive Gain Gain
Modulation Rate
Modulation Depth Depth
Rate/Pitch/Frequency
Delay Time
Delay Feedback Feedback
Time
Reverb Level Reverb Level
Rotate [VALUE] knob to choose one kind of controlling target, then
the expression pedal will work with the corresponding parameter.
Note: There will be a symbol behind the effect parameter which can be controlled
by the pedal (refer to Effect Explanation for detail).
Note: If the effect module of the chosen target was not turned on, the pedal will be of
no effect.
Note: Pedal seing can be stored in patch.
Note: The expression pedal will be effective in EDIT mode.

12
Switch Control Mode
(Volume-Effect)
Push down the expression pedal at full
tilt to switch the control mode from
volume control to effect control, and
[EXP.PEDAL] LED will shift from
extinguish to light. It also can switch the
control mode from effect control to
volume control,[EXP.PEDAL] LED will
shift from light to extinguish.
04
Push strongly, so that pedal
touches here
Expression Pedal
Pedal Reset
The responsivity of the expression pedal on GEM Box can be reset
as necessary. If the effect change seems insufficient when pushing
the pedal down, or if the volume or tone changes excessively even
when the pedal is only lightly pushed, or if it’s hard to switch the
pedal mode, adjust the pedal as follows:
a. Set the Module Selector to [PEDAL] and hold down [VALUE]
button while power on, the indication will appear on the LED
display, and then release the [VALUE] button.
b. Fully raise the expression pedal and press [VALUE] button once,
the indication will appear on the LED display.
c. Push the expression pedal fully down and press [VALUE] button
again, the indication will appear on the LED display.
d. Push strongly down the expression pedal at full tilt and press
[VALUE] button once more. The Pedal Reset adjustment is
completed, and GEM Box will return to the play mode. If the
indication is shown, press [VALUE] button and repeat the
procedure from step b.
05
Fully down Push strongly, so that pedal
touches here
Fully raise

13
In fact, the GAIN module is a part of DRIVE module, the RATE module
is a part of MODULATION module, the D.TIME module is a part of
DELAY module, and the DECAY module is a part of REVERB module.
They are all parameter’s value setting module which belongs to the
previous effect module.
Type & Para: The effect type (left
side of the display) and parameter’s
value (right side of the display) are
adjusted simultaneously.
Type: Only select the effect type.
Para: Only adjust the
parameter’s value.
01.PATCH LEVEL (Para)
02.PEDAL (Para)
03.COMP/WAH (Type & Para)
04.DRIVE (Type)
05.GAIN (Para)
06.EQ (Type & Para)
07.NR/CAB (Type & Para)
08.MODULATION (Type & Para)
09.RATE (Para)
10.DELAY (Type & Para)
11.D.TIME (Para)
12.REVERB (Type & Para)
13.DECAY (Para)
01
02
03
04
05 06 07
08
09
10
11
12
13
EQ
NR/CAB
GAIN
DRIVE
COMP/WAH
PATCH LEVEL
RATE
DELAY
D.TIME
REVERB
DECAY
MODULATION
PLAY
STORE
RHYTHM
PEDAL
BANK
Effect
type
Parameter’s
value
PATCH
# EDIT
BANK
Effect
type
PATCH
# EDIT
BANK
Parameter’s
value
PATCH
# EDIT
Patch Editing
Select Effect Module
Set the Module Selector to the effect module which you want to
edit, the available setting options are listed below:
01

14
Change Setting
Press [VALUE] knob to change effect/parameter type ahead, hold
and rotate [VALUE] knob to change effect/parameter type ahead
(clockwise) or backwards (anticlockwise), rotate [VALUE] knob to
set a new value of the effect type or parameter. As long as the
selected item’s value changes, a dot (.) will appear in the bottom
right of the display. This indicates that a setting has been changed
from the currently stored value.
Bypass an Effect Module
When adjusting an effect in EDIT mode, press [MODULE
BYPASS] / [PATCH +] footswitch to bypass this effect module, the
indication will appears on the display and the module will be
turned off. Pressing [MODULE BYPASS] / [PATCH +] switches
once more will return the setting to the previous condition.
Adjusting the Patch Level
Set the Module Selector to [PATCH LEVEL], rotate [VALUE] knob
to adjust the volume of a patch, LED display will show the current
level.
The range of patch level is ~ .
02
03
04
BANK PATCH
# EDIT
VALUE
PLAY / STOP MODULE BYPASS
BYPASS / TUNER
HOLD FOR MUTE TUNING
PATCH
Patch Editing
BANK
Dot indicates that setting
has been changed
PATCH
# EDIT
EQ
NR/CAB
GAIN
DRIVE
COMP/WAH
PATCH LEVEL
RATE
DELAY
D.TIME
REVERB
DECAY
MODULATION
PLAY
STORE
RHYTHM
PEDAL
Note: If you return to [PLAY] module and select another patch, the
changes you have made in edit mode will be lost unless you store the
patch first.

15
Patch Storing/Copying
Enter Storing Mode
Set the Module Selector to [STORE] to enter storing mode, the
display will show the current editing patch’s number.
Note: To cancel the store process, rotate the Module Selector to another
position, well then the patch will not be saved.
Note: An edited patch can be stored in a user bank ( ~ ), it can not be
stored in a preset patch ( ~ ).
Note: Storing an existing patch in another location can create a copy.
Storing/Copying Patch
When in [STORE] mode, press [VALUE]
button once to do the storing, the patch’s
number on the display will begin to flash, at
that time, rotate [VALUE] knob or press
[PATCH -] / [PATCH +] footswitch to
change patch number, when you got the
expectant position, press [VALUE] button
again to confirm the patch storing, the
patch’s number on the display will stop
flashing.
EQ
NR/CAB
GAIN
DRIVE
COMP/WAH
PATCH LEVEL
RATE
DELAY
D.TIME
REVERB
DECAY
MODULATION
PLAY
STORE
RHYTHM
PEDAL
01
02
BANK PATCH
# EDIT
BANK PATCH
# EDIT

16
1. Before power on, hold down the [PATCH +] footswitch, and then
power to the GEM Box, will appear on the display and last flashing
for 3 seconds, it indicates setting up to Patch Pre-Select function
successfully.
3. Press both [PATCH -] and [PATCH +] footswitches together, the
selected patch will be activated, the sound changes, and the display will
stop flashing.
4. To return the normal patch selecting method, turn the power off and
then on again. The Patch Pre-Select function will not preserve when
power on again.
2. In play mode, select the patch to use
next. The selected new bank and
patch’s number flash on the display, but
the sound does not change yet.
BANK PATCH
# EDIT
BANK PATCH
# EDIT
BANK PATCH
# EDIT
BANK PATCH
# EDIT
PLAY / STOP MODULE BYPASS
BYPASS / TUNER
HOLD FOR MUTE TUNING
PATCH
PLAY / STOP MODULE BYPASS
BYPASS / TUNER
HOLD FOR MUTE TUNING
PATCH
Patch Pre-Select
Recall Function
Patch Pre-Select function can let you select the patch first but not to
activate it, and then perform an additional step to activate the patch.
To use this function, conform to the following instructions:

17
Factory Reset
Factory Reset function will initialize all setting of GEM Box. All the user
patches will be erased and overwritten by the preset patches.
To do the factory reset, conform to the following instructions:
Before power on, set the Module Selector to [PLAY], hold down the
[PATCH -] and [PATCH +] footswitch and the [VALUE] button
simultaneously, and then power to the GEM Box, will appear on the
display and last flashing.
At that time, press [VALUE] button to confirm, will be flashing in a
faster speed for 2 seconds, then turn to display at a steady status
for 3 second, then back to the normal state, the factory reset operation
have been done.
Note: If you want to quit Factory Reset halfway, move the Module Selector to
another location, then the Factory Reset will be canceled.
VALUE
HOLD
VALUE
PRESS
FASTER FLASHING
2 SECONDS
3 SECONDS
BANK PATCH
# EDIT
BANK PATCH
# EDIT
BANK PATCH
# EDIT
BANK PATCH
# EDIT
PLAY / STOP MODULE BYPASS
BYPASS / TUNER
HOLD FOR MUTE TUNING
PATCH
EQ
NR/CAB
GAIN
DRIVE
COMP/WAH
PATCH LEVEL
RATE
DELAY
D.TIME
REVERB
DECAY
MODULATION
PLAY
STORE
RHYTHM
PEDAL

18
Effects Explanation
General Instruction
GEM Box has 8 effect modules, 60 types of effect in total, can offer up
to 8 simultaneous effects (NR/CAB module can offer 2 effects at a
time).
Each effect module has several different effect types, only one type can
be selected at a time. All effect types have various parameters that can
be adjusted, the parameters change the tone and effect intensity similar
to the knobs on the device.
Type Name Display Effect Explanation
Compressor
This effect is used for controlling dynamics of the signal, it limits
high-level signals and boosts low-level signals.
The parameter’s value controls the Depth.
Limiter This effect limits high-level signals to avoid
overload.
The parameter’s value controls the Depth.
Boost This effect can enhance the gain and dynamic of the signal.
The parameter’s value controls the Gain.
Auto Wah This effect creates a recurrent wah-wah sound.
The parameter’s value controls the Rate.
01
02 Explain the Effects Modules/Types/Parameters
COMP/WAH Module
COMP/WAH
MODULATION
EQ NRDRIVE CAB DELAY REVERB
Compressor
Limiter
Boost
Auto Wah
Sense Wah
Pedal Wah Rectifier Amp
Preamp Drive Metal Land Low Chorus Digital Room
Analog Chamber
Mod Hall
Church
Plate
Mod
Tape Echo
Echo
Flanger
Phaser
Tremolo
Filter
Vibrato
Step Phaser
Pitch Shift
Ring Mod
Talk Flanger
1x10 Combo
1x12 Combo
4x12 Stack
2x12 Twin
Combo
Mid
High
Vintage Drive Tweed Amp
Classic Drive Mooer Boost
Super Drive AC Amp
Blink Drive JCM Amp
Obsessive Drive
Fab Distortion Mooer Distortion
Pi Fuzz Mooer Fuzz
Face Fuzz Mooer Metal
Bend Fuzz Acoustic
Simulator
Hog Fuzz
Distortion Mooer Drive
Tube Drive Metal Club
Noise
Reduce
Effect Chain
Modules
Types

19
This mark means the parameter can be controlled by the expression pedal if corresponding
type was chosen in PEDAL module.
DRIVE Module
* MOOER is a trademark of MOOER AUDIO CO., LTD. Other manufacturer names and product
names mentioned in this list are trademarks or registered trademarks of their respective owners
and are not associated or affiliated with MOOER AUDIO CO., LTD. They are trademarks of
other manufacturers and were used merely to identify whose sounds were reviewed in the
creation of this product.
Type Name Display Effect Explanation
Sense Wah This effect varies wah sound according to picking intensity.
The parameter’s value controls the Sensitivity.
Pedal Wah This effect varies wah sound by controlling the expression pedal.
The parameter’s value controls the Central Frequency
Effects Explanation
Metal Land Based on a BOSS
®
MT-2 (Metal Zone) *
Metal Club Based on an Ibanez
®
SM-7 (Smash Box) *
Tweed Amp Based on a Fender
®
Tweed Bassman
®
amp *
AC Amp Based on a Vox
®
AC30 amp *
JCM Amp Based on a Marshall
®
JCM800 amp *
Rectifier Amp Based on a Mesa Boogie
®
Dual Rectifier
®
amp *
Mooer
Mooer
Mooer
Mooer
Mooer
Boost Designed by MOOER AUDIO CO., LTD. *
Designed by MOOER AUDIO CO., LTD. *
Designed by MOOER AUDIO CO., LTD. *
Designed by MOOER AUDIO CO., LTD. *
Designed by MOOER AUDIO CO., LTD. *
Designed by MOOER AUDIO CO., LTD. *
Drive
Distortion
Fuzz
Acoustic Simulator
Metal
Gain Control the Gain of distortion effects and the Tone of Acoustic
Simulator effect.
Preamp Drive Based on a DOD
®
Overdrive Preamp/250 *
Tube Drive Based on an Ibanez
®
TS9 (TUBE SCREAMER
®
) *
Vintage Drive Based on a BOSS
®
OD-1 (Over Drive) *
Super Drive Based on a BOSS
®
SD-1 (SUPER OverDrive) *
Blink Drive Based on a Voodoo Lab
®
Sparkle Drive *
Obsessive Drive Based on a Fulltone
®
OCD
®
(Obsessive Compulsive Drive™) *
Classic Drive Based on a ProCo™ The Rat™ *
Distortion Based on a BOSS
®
DS-1 (Distortion) *
Fab Distortion Based on a Danelectro
®
DD1 Fab Tone™ *
Pi Fuzz Based on an Electro-Harmonix
®
Big Muff Pi
®
*
Face Fuzz Based on a Dallas-Arbiter FUZZFACE™ *
Bend Fuzz Based on a Colorsound Tonebender *
Hog Fuzz Based on an Electro-Harmonix
®
Hog’s Foot *