Categories: KORG

KORG AW-LT100T Clip-On Tuner for Trumpet and Trombone Owner’s Manual

KORG AW-LT100T Clip-On Tuner for Trumpet and Trombone 

Recommended locations

  • French horn
  • Tuba
  • Euphonium
  • Oboe
  • Bassoon
  • Clarinet
  • Alto Saxophone
  • Cello Violoncello
  • Guitar
  • Trumpet
  • Trumpet
  • Trombone

Range of motion

  • AW-LT100M

  • AW-LT100T

Parts of the AW-LT100M/AW-LT100T

Installing the battery

When the battery becomes depleted, a battery symbol will appear on the display. Immediately replace the battery with a new one.

  1. Open the battery compartment cover on the rear of the tuner in the direction of the arrow.
  2. Insert the battery, making sure to observe the correct polarity, and then close the cover.
    Illustration AW-LT100T


Tuning procedure
  1. Turn the left shuttle switch upward. Each time you turn the shuttle switch, the AW-LT100M/AW-LT100T will be turned on or off. If the power is left on for approximately 20 minutes without any user input, it will turn off automatically (Auto power-off function).
  2. If necessary, change the reference pitch (calibration).
  3. Play a single note on your instrument. The note name closest to the detected pitch appears in the note name indicator. Check that the correct note name appears in the display, and the meter segments at the center light up. If you want to tune to a pure major third or pure minor third above a certain note, adjust the pitch to the pure major or minor third marks on the meter. For example if you want to tune to a pure major third above A, make the note name indicator read C#, and tune so that the meter indicates the left Alternatively, if you want to tune to a pure minor third above A, make the note name indicator read C, and tune so that the meter indicates the right
    Meter indications when correctly tuned

Even if the pitch is within the range of detection, it may not be possible to detect the pitch of an instrumental sound that contains large numbers of overtones or a sound that has a rapid decay.
The meter may respond to vibrations it picks up from the environment.

Reference pitch settings (calibration) (*M) 

Each time you turn the right shuttle switch upward (or downward), the reference pitch (calibration value) increases (or decreases) in 1 Hz steps.

Meter indication speed setting (*M) 

Each time you turn the left shuttle switch downward, the meter indication speed changes. When the setting is changed, “F” (fast) or “S” (slow) appears in the reference pitch indicator.


After turning the left shuttle switch upward to turn on the AW-LT100M/ AW-LT100T, you can change the brightness of the display by keeping the left shuttle switch turned upward for approximately 2 seconds.
Auto : The backlight will light brightly when sound is inputted or when a shuttle switch is operated. When there has been no sound input or shuttle switch operation for approximately three seconds after the power has been turned on, the backlight will turn off in order to prevent the battery from being depleted.
Soft : The backlight will light at a lower level of brightness in order to prevent the battery from being depleted.

Attaching to the instrument and range of motion

The AW-LT100M/AW-LT100T tunes by picking up the vibrations of the instrument. Therefore, attach the AW-LT100M/AW-LT100T to the recommended part of your instrument in order to tune it (Refer to the illustrations on page 1).

Model name Instrument name Attachment location (Illustration)
AW-LT100M Horn (Single, Double) First tube (M1)
Tuba Mouth pipe (M2)
Euphonium Bell (M3)
Oboe Bell body (M4)
Bassoon Wing joint area (M5)
E♭ Clarinet Upper joint
B♭ Clarinet Bell (M6)
Bass clarinet Blowing tube
Saxophone (Soprano, Baritone) Bell
Saxophone (Alto, Tener) Neck (M7)
Cello Tailpiece (M8)
Contrabass Tailpiece
Guitar Head (M9)
Trumpet / Cornet Main tube (M10)
AW-LT100T Trumpet / Cornet Bell (T1)
Trombone Bell (T2)

Additionally, the AW-LT100M/AW-LT100T can be freely moved so that the display is easy to read (Refer to the illustration on the upper left).

The AW-LT100M/AW-LT100T may be damaged if you apply excessive force within its range of motion, or attempt to move it beyond its intended range of motion.

Please carefully attach the AW-LT100M/AW-LT100T to your instrument. Leaving the AW-LT100M/AW-LT100T attached for a long time may damage or mark the instrument’s surface.

Depending on various factors such as age-related change or the surface finish, there is a possibility that your instrument may be damaged by attaching this product.


Scale: 12-note equal temperament
Range (sine wave): A0 (27.50 Hz)–C8 (4186 Hz)
Precision: +/-1 cent
Reference pitch: A4 = 410–480 Hz (1 Hz steps)
Dimensions (W x D x H):  AW-LT100M 60 mm x 65 mm x 68 mm / 2.36’’ x 2.56’’ x 2.68’’ AW-LT100T 60 mm x 32 mm x 41 mm / 2.36’’ x 1.26’’ x 1.61’
Weight: AW-LT100M 36 g/1.27 oz. (including battery) AW-LT100T 27 g/0.95 oz. (including battery)
Power supply: One AAA Battery
Battery life: approximately 100 hours (backlight: Soft, tuner continuously operating, A4 input, when using alkaline battery)
Included items: Owner’s manual, One AAA battery

*M Settings are remembered even when the power is off.

  • Specifications and appearance are subject to change without notice for improvement.



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
Power supply

Be sure to turn off the power when the unit is not in use. Remove the battery in order to prevent it from leaking when the unit is not in use for extended periods.

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.

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.


NOTE: 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.
    If items such as cables are included with this equipment, you must use those included items.
    Unauthorized changes or modification to this system can void the user’s authority to operate this equipment.
Notice regarding disposal (EU only)
If this symbol is shown on the product, manual, battery, or package, you must dispose of it in the correct manner to avoid harm to human health or damage to the environment. Contac t your local administrative body for details on the correct disposal method. If the battery contains heavy metals in excess of the regulated amount, a chemical symbol is displayed below the symbol on the battery or battery package.

This device complies with Part 15 of the FCC Rules.

Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. CAN ICES-3 B / NMB-3 B.


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.

* All product names and company names are the trademarks or registered trademarks of their respective owners.

Documents / Resources

KORG AW-LT100T Clip-On Tuner for Trumpet and Trombone [pdf] Owner's Manual
AW-LT100T Clip-On Tuner for Trumpet and Trombone, AW-LT100T, Clip-On Tuner for Trumpet and Trombone, Trumpet and Trombone

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