5-12, Shimotakaido 1-chome, Suginami-ku, Tokyo, Japan
C 2003 KORG INC.
Printed in China
Thank you for purchasing Ampworks — Korg's portable modeling signal processor. To
ensure trouble-free enjoyment, please read this manual carefully and use the product as
described. When you have finished reading the manual, keep it for future reference.
Ampworks uses Korg's "
" modeling technology to deliver powerful amp, cabinet
and effect modeling sounds. Ampworks is the ideal choice for a wide range of
applications including direct-line recording, live performance and practicing through
You can combine eleven types of amps with eleven types of cabinets to simulate
numerous varieties of setups, and also use nine high-performance effects to add
finishing touches to your sound. All this power is easy to control; just use the Amp
Type, Cabinet, and Effect selectors plus the amp and effect knobs to dial-in the sound
You can select from eleven preset programs that are optimized for each amp type, two
user programs, or use the manual mode.
3. Use the control knobs (6) to adjust the gain, tone, and volume of the modeled amp.
Turn the GAIN knob to adjust the input level from clean to distortion (from left to right).
Turn the TREBLE, MIDDLE, and BASS knobs to adjust the tone.
Turn the VOLUME knob to adjust the volume.
4. Use the EFFECT selector (7) to select the desired modeled effect and use the
EFF.DEPTH knob (8) to adjust the effect level.
For some of the following effects, you can adjust the modulation speed, delay time, or
reverb time. The parameter will be set to a value corresponding to the interval
(maximum 4 seconds) at which you press the TAP button (9) twice.
Range of parameter value
*Proportion to TAP interval
- - -
- - -
CHORUS, PHASER, ROTARY: Modulation speed
80.0 [ms]...4.0 [s]
160.0 [ms]...8.0 [s]
65.0 [ms]...2.0 [s]
80.0 [ms]...1.0 [s]
approx.0.5 [s]...8.0 [s]
*Proportion to TAP interval means that for example if FLANGE is selected, pressing
the TAP button at a 4-second interval will set the parameter value to twice that length,
or a modulation rate of eight seconds per cycle.
In addition to these settings, you can also adjust the depth of noise reduction by
holding down the TAP button (9) and turning the EFF.DEPTH knob (8).
5. If a user or preset program is selected, and you want to restore the setting of a
specific selector or knob to the setting stored in the program, turn that selector or
knob until the LED of the selected program (PRESET, PROG/MANU) goes dark. The
LED will go dark for an instant, and then light again immediately.
If you select a different program or turn off the power without saving an edited
program, your changes will be lost.
Saving a program
You can store two of your favorite settings in PROG1 and PROG2.
1. Press the WRITE button (10). (The PROG/MANU button will blink.)
2. Press the PROG/MANU button (3) to select where you wish to save your program.
Each time you press the button, the selection will alternate between PROG1 (LED
blinking green) and PROG2 (LED blinking red).
3. Press the WRITE button once again to save your settings. If you decide not to save
your settings, press the CANCEL button (2).
Data that had previously been in the writing-destination will be overwritten and
The bypass on/off setting is not remembered.
To restore the factory settings
You can restore PROG1 and PROG2 to the factory settings as follows.
Hold down the WRITE button (10) and turn on the power.
Parts and what they do
1. POWER LED
6. Control knobs
10. WRITE button
3. PROG/MANU button
4. AMP TYPE selector
5. CABINET selector
13. INPUT jack
15. OUTPUT jack
16. FOOT SW jack
14. LINE/AMP select switch
Using the optional foot switch
If the optional foot switch (PS-1 or PS-100) is connected to the FOOT SW jack (16), you
can perform an operation at power-on to specify whether the foot switch will change
programs or switch bypass on/off.
If you want to use the footswitch to change programs:
just turn on the power.
Pressing the foot switch will cycle in the order of PROG1
- - -
If you want to switch between bypass and a program:
turn on the power while holding down the PROG/MANU button (3).
Pressing the foot switch will turn bypass on/off. This allows you to switch between one
program of choice and bypass.
The operating mode of the foot switch can be changed only by this special operation
Specifications and options
9 + noise reduction
2 user, 1 manual, 11 preset
Guitar input (mono 1/4" jack)
Line/headphone dual-purpose output (stereo 1/4" jack)
Two AA alkaline batteries (allows approximately 10 hours of
continuous use) or separately sold AC adaptor (DC 4.5V
Dimensions (W x D x H): 144 mm x 78 mm x 48 mm
222 g (not including batteries)
Owner's manual, Two AA alkaline batteries
AC adaptor, foot switch (PS-1 or PS-100)
Appearance and specifications are subject to change without notice for improvement.
(Resonant structure and Electronic circuit Modeling System) is KORG's propri-
etary sound modeling technology which precisely reproduces the complex character
and nature of both acoustic and electric instruments as well as electronic circuits in
real world environments.
emulates a wide variety of sound generation charac-
teristics including instrument bodies, speakers & cabinets, acoustic fields, micro-
phones, vacuum tubes, transistors, etc.
Turning the power on/off
When using batteries:
8. Effect depth knob
1. Slide the battery cover (11) located on the underside of the case toward the UNLOCK
position, and remove it. Insert two AA alkaline batteries (included), being sure to
observe the correct polarity. Close the cover and slide it to the LOCK position to
fasten it in place.
2. When using batteries, the power will turn on when a
mono cable is plugged into the INPUT jack (13). The
POWER LED (1) will light while the power is on.
The power will turn off when you remove the cable
from the INPUT jack.
Be sure to remove the cable from the INPUT jack when you are not using Ampworks
to preserve battery life.
If you connect a stereo cable, the power will not be turned on.
When the batteries run down, the POWER LED will blink. Replace the batteries as
soon as possible. Batteries that have become unusable should be removed from the
unit immediately. If dead batteries are left in the unit, they may leak or cause other
malfunctions. You should also remove the batteries if you will not be using Ampworks
for an extended period.
When using the AC adaptor:
9. TAP button
1. Connect the separately sold AC adaptor to the DC 4.5V jack (12), and plug the AC
adaptor into an AC outlet. The POWER LED (1) will light, and the power will turn on.
7. EFFECT selector
Use only the specified external AC adaptor. (DC 4.5V
Be sure to disconnect the AC adaptor from the AC outlet when you are not using
1. Turn off the power of the equipment you want to connect, and lower each volume control.
2. Connect your guitar to the INPUT jack (13).
3. Set the LINE/AMP select switch (14) to the appropriate position for the output destination.
If you connect the output to a mixer, recorder, or headphones, use the "LINE" setting.
If you connect the output to a guitar amp, use the "AMP" position. When AMP is
selected, the cabinet response will automatically be adjusted internally to optimize the
sound produced through a guitar amp.
4. Connect the OUTPUT jack (15) to your mixer or guitar amp.
The OUTPUT jack is stereo (TRS), so if you use a mono cable to connect it to your
guitar amp etc., only the sound of the L (left) channel will be heard.
If you are listening through headphones, connect them to this jack.
11. Battery cover
If you are running into two channels of a mixer or using two amplifiers in stereo, use a
Effect parameter list
Clean channel of a high-end 100 Watt hand made amp.
(recommended CAB: 412CLS, 412VIN, 412MDN)
2x12 combo amp indispensable for country or blues players.
(recommended CABINET: 212BLK)
4x10 combo amp designed for bass guitar. (recommended CAB: 410TWD)
VOX AC15 manufactured in 1962. (recommended CAB: 112VOX)
Brilliant channel of a VOX AC30TB. (recommended CAB: 212VOX)
UK-manufactured vintage amp head. (recommended CAB: 412CLS)
High treble channel of a UK-manufactured 100 Watt amp head from 1969.
(recommended CAB: 412CLS)
UK-manufactured 100 Watt head from1983 with master volume.
(recommended CAB: 412CLS, 412VIN, 412MDN)
UK-manufactured 100 Watt modern amp. (recommended CAB: 412VIN, 412MDN)
High-gain amp with metal plate. (recommended CAB: 412VIN, 412MDN)
This simulates an open back cabinet with one 8-inch speaker.**
This simulates an open back cabinet with one 12-inch speaker typically used for blues.*
This simulates an American open back cabinet with one 12-inch speaker and a bright
This simulates a Vox open back cabinet with one 12-inch "Blue" speaker.*
This simulates an American open back cabinet with two 12-inch speakers.**
This simulates a Vox open back cabinet with two 12-inch "Blue" speakers.*
This simulates a modern open back cabinet with two 12-inch speakers.**
This simulates an open back cabinet with four 10-inch speakers.*
This simulates a closed back cabinet with four 25 Watt 12-inch speakers.**
This simulates a closed back cabinet with four 30 Watt 12-inch speakers.**
This simulates a closed back cabinet with four 75 Watt 12-inch speakers.**
This compressor produces consistent levels and sustain.
Auto wah that applies a wah effect that responds to picking.
EFF.DEPTH left half: down sweep (
Vintage stereo chorus.
Rotary speaker simulation.
Vintage stereo chorus + Stereo delay.
Vintage stereo chorus + Spring reverb.
Adjusts amp gain.
Adjusts amp high-frequency range.
Adjusts amp mid-frequency range.
Adjusts amp low-frequency range.
Adjusts amp volume.
EFF.DEPTH Adjusts effect depth.
Adjusts noise reduction depth. (Hold down the TAP button and turn EFF.DEPTH)
stereo to dual mono cable.
5. If you want to use an external foot switch to change user programs, manual settings or
bypass, connect the optional Korg PS-1 or PS-100 foot switch to the FOOT SW jack
6. When you have finished making connections, turn on the power of the connected
equipment and adjust the volume.
Preset programs (11 programs)
1. Press the PRESET button (2) to light the LED.
2. Turn the AMP TYPE selector (4).
Preset programs with cabinets and effects appropriate for each amp type will be
User programs (PROG1, 2), Manual
1. Press the PROG/MANU button (3). Each time you press the button you will cycle
through the following three settings.
(LED lit green):
(LED lit red):
MANUAL (LED lit orange):
When you select Bypass, you will only hear the direct (unprocessed) sound of your
guitar. When Ampworks is bypassed, the manual/program LED (PRESET or PROG/
MANU) will go dark.
To bypass Ampworks, hold down the PROG/MANU button (3) for about two seconds.
Press the PROG/MANU button once again to cancel bypass.
To create your own sound, you can either start with an existing program and modify it, or
create a sound from scratch. If you start with an existing program, select the desired
program, and then use the control knobs (6) to adjust the amp settings, or adjust the
effect and effect depth. You can also try changing the cabinet. Alternatively if you want to
create your sound from scratch, you can use the method described below. At this time
you may wish to press the PROG/MANU button (3) to select MANUAL.
1. Use the AMP TYPE selector (4) to select one of the eleven amp types.
2. Use the CABINET selector (5) to select one of the eleven types of cabinet models.
The combination of amp type and cabinets will determine the basic tonal character of
the amp. Any cabinet model can be used with any amp model. Some recommended
combinations are in the "Effect parameter list." If you do not want to use effects, set
the EFF.DEPTH knob (8) to "0" (all the way to the left).
Using the unit in the following locations can result in a malfunction.
• In direct sunlight
• Locations of extreme temperature or humidity
• Excessively dusty or dirty locations
• Locations of excessive vibration
• Close to magnetic fields
Please connect the designated AC adapter to an AC outlet of the correct voltage. Do not connect it to
an AC outlet of voltage other than that for which your unit is intended.
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.
To avoid breakage, do not apply excessive force to the switches or controls.
If the exterior becomes dirty, wipe it with a clean, dry cloth. Do not use liquid cleaners such as
benzene or thinner, or cleaning compounds or flammable polishes.
Keep this manual
After reading this manual, please keep it for later reference.
* AlNiCo magnet speaker, **Ceramic magnet speaker
Keeping foreign matter out of your equipment
Never set any container with liquid in it near this equipment. If liquid gets into the equipment, it could
cause a breakdown, fire, or electrical shock.
Be careful not to let metal objects get into the equipment. If something does slip into the equipment,
unplug the AC adapter from the wall outlet. Then contact your nearest Korg dealer or the store where
the equipment was purchased.
CE mark which is attached to our company's products of AC mains operated apparatus until
December 31, 1996 means it conforms to EMC Directive (89/336/EEC) and CE mark Directive
And, CE mark which is attached after January 1, 1997 means it conforms to EMC Directive (89/
336/EEC), CE mark Directive (93/68/EEC) and Low Voltage Directive (73/23/EEC).
Also, CE mark which is attached to our company's products of Battery operated apparatus means
it conforms to EMC Directive (89/336/EEC) and CE mark Directive (93/68/EEC).
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
), right half: up sweep (
cause harmful interference to radio communications. However, there is no guarantee that interfer-
ence 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
• Consult the dealer or an experienced radio/TV technician for help.
Unauthorized changes or modification to this system can void the user's authority to operate
This product has been manufactured according to strict specifications and voltage requirements
that are applicable in the country in which it is intended that this product should be used. If you
have purchased this product via the internet, through mail order, and/or via a telephone sale, you
must verify that this product is intended to be used in the country in which you reside.
WARNING: Use of this product in any country other than that for which it is intended could be
dangerous and could invalidate the manufacturer's or distributor's warranty.
Please also retain your receipt as proof of purchase otherwise your product may be disqualified
from the manufacturer's or distributor's warranty.
Selecting programs (sounds)
User-writable program 1
User-writable program 2
The current settings of the knobs and selectors
Creating your sound
CE mark for European Harmonized Standards
THE FCC REGULATION WARNING (for U.S.A.)
IMPORTANT NOTICE TO CONSUMERS