Korg GA-1 Guitar/Bass Tuner Owner's Manual

Controls

1. Power switch: Turns the unit on/off.

2. INPUT jack: Connects instruments or microphones.

3. Display: Shows note name, flat indicator, GUITAR/BASS indicator, and meter.

4. [GUITAR/BASS] switch: Selects between guitar and bass tuning modes.

5. [FLAT] switch: Selects flat tuning (1-5 semitones).

6. [SOUND] switch: Selects sound mode for tuning with reference pitch.

7. Built-in mic: For tuning without connecting an instrument.

8. Speaker: Outputs reference pitches in Sound mode.

9. Tuning guide LEDs: Indicate tuning accuracy.

10. Tilt slit: Allows the tuner to be tilted for better viewing. Insert a guitar pick or similar object.

Tuning Procedure

Meter Mode

Use the VU-style meter in the display to tune your instrument.

1. Connect your instrument or microphone to the INPUT jack. If using the built-in mic, do not connect anything to the INPUT jack and place the instrument close to the mic.
2. Press the power switch. The tuner will automatically turn off after 20 minutes of inactivity to conserve battery.
3. Press the [GUITAR/BASS] switch to select GUITAR or BASS mode.
4. Play a single note on your instrument. The display will show the nearest note name. Tune your instrument to match the displayed note.
5. Tune your instrument so the meter needle is centered and the center tuning guide indicator is lit (for A=440 Hz reference pitch). The left indicator lights if flat, the right if sharp. Each meter marking represents 2 Hz.

A quiet environment is recommended for precise tuning with the built-in mic.

Sound Mode

Tune while listening to a reference pitch.

1. Set up as described in steps 2-3 of Meter mode.
2. Press the [SOUND] switch to enter Sound mode.
3. Press the [SOUND] switch until the desired reference note appears in the display.
4. Listen to the reference pitch from the GA-1 and tune your instrument accordingly.

Flat Tuning

Tune to a pitch lowered by 1-5 semitones.

1. In Meter or Sound mode, select the note you wish to flatten.
2. Press the [FLAT] switch to select the number of semitones (1-5) to lower the note. The display will show ♭ to ♭♭♭♭♭.
3. Tune your instrument.

Specifications

• Tuning: 12 note equal-tempered
• Detection range: B0♭♭♭♭♭ (23.12Hz)–B6 (1975.54Hz)
• Reference tone: [GUITAR] 7B➝6E➝5A➝4D➝3G➝2B➝1E; [BASS] LB➝4E➝3A➝2D➝1G➝HC (Pitch is 1 octave higher for GUITAR, 2 octaves higher for BASS)
• Tuning modes: METER (AUTO GUITAR/BASS), SOUND (MANUAL GUITAR/BASS)
• Flat tuning function: 1–5 semitones
• Detection accuracy: ±1 cent
• Sound accuracy: ±1.5 cent
• Connection jack: INPUT jack (1/4” mono)
• Power supply: two AAA batteries (3V)
• Battery life: Approximately 100 hours (conventional batteries, Meter mode, A4 continuous input)
• Dimensions: 102 mm (W) x 59 mm (D) x 16 mm (H) / 4.02” x 2.32” x 0.63”
• Weight: 72g / 2.54 oz (including battery)
• Included items: Owner’s Manual, two AAA batteries

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

Installing the Battery

Slide and remove the battery cover on the rear of the GA-1. Insert batteries observing correct polarity. If the unit malfunctions, try removing and reinstalling the batteries. When batteries are low, the display will blink slowly. Replace batteries promptly.

Precautions

• Do not use the unit in direct sunlight, or in locations of extreme temperature or humidity.
• Avoid dusty, dirty, or excessively vibrating locations, and areas close to magnetic fields.
• Turn the power switch to OFF when not in use. Remove batteries for extended periods of non-use to prevent leakage.
• Keep away from radios and televisions to avoid reception interference.
• Do not apply excessive force to switches or controls to avoid breakage.
• Wipe the exterior with a clean, dry cloth. Do not use liquid cleaners or flammable polishes.
• Keep this manual for future reference.
• Never place liquid containers near the equipment. Prevent metal objects from entering the equipment to avoid breakdown, fire, or electrical shock.
• Notice regarding disposal (EU only): Dispose of the product, manual, battery, or packaging correctly to avoid harm to human health or the environment. Contact your local administrative body for disposal methods. If batteries contain excess heavy metals, a chemical symbol will be displayed.
• Important Notice to Consumers: Verify that the product is intended for use in your country. Use in other countries may be dangerous and will invalidate the warranty. Retain your receipt as proof of purchase.
• * All product and company names are trademarks or registered trademarks of their respective owners.

FCC Regulation Warning (for USA)

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 cables are included, use only those included items. Unauthorized changes or modifications to this system can void the user’s authority to operate this equipment.

Warranty Information (Japan Only)

This warranty is valid for one year from the date of purchase. Repairs due to misuse, accidents, or unauthorized modifications are not covered. The warranty is valid only in Japan. For international warranty service, please contact your dealer or Korg customer service.

After-Sales Service

For questions or consultations regarding repairs and product handling, please contact the Korg Customer Service Center.

Customer Service Center:

Hours: Monday–Friday, 10:00–17:00 (excluding holidays and company holidays)

Service Center: 〒168-0073 Tokyo, Suginami-ku, Shimo-Takaido 1-15-12

Headquarters: 〒206-0812 Tokyo, Inagi-shi, Yanokuchi 4015-2 URL: http://www.korg.co.jp/