Korg GA2 Compact Guitar Tuner

Korg GA2 Compact Guitar Tuner

Stow the Korg GA2 tuner in your guitar or bass gig bag and you'll have a reliable, accurate tuner wherever you go!

Korg GA40 Guitar and Bass Tuner

No longer available at zZounds
This tuner can be used to tune any guitar, even your 7-string guitar or 6-string bass. It's thin and compact and has a battery life of up to 85 hours.
With superior features like a large, easy-to-see, LCD needle-style display, the GA-40 dedicated Guitar/Bass Tuner is a great value!


- A compact tuner designed specifically for guitar and bass, with excellent performance and convenient functionality
- Large, high-precision meter-type display for stable tuning indication
- Quinta-Flat Tuning mode allows dropped tunings from one to five semitones
- Supports tuning of 7-string guitars and 6-string basses
- Sound Out function lets you produce a reference tone from the internal speaker
- Bypass function
- Auto Power Off function saves the battery even if you forget to turn off the tuner
- Memory Backup function
- Approximately 85 hours of continuous use

Dedicated Guitar and Bass Tuner with Large LCD for Easy Viewing

The GA-40 is a dedicated, easy-to-operate guitar/bass tuner with automatic pitch detection. In Guitar mode it supports 7-string guitars (7B through 1E), and in Bass mode it supports 6-string basses (Low-B and Hi-C). With the precision you expect from KORG, the GA-40 indicates the pitch quickly and accurately. The LCD needle-style display provides both the accuracy of an LCD as well as the easy viewing of a needle indicator, and the display has been enlarged for even better visibility. You can also use the built-in high-sensitivity microphone to tune an acoustic guitar.

Sound Out Function Produces a Reference Tone from the Internal Speaker

In addition to letting you tune visually using the meter, the GA-40 read more provides a Sound Out function that plays a reference tone through the internal speaker, letting you tune by ear. Each time you press the Sound switch, the tone will cycle through 7B to 6E to 5A to 4D to 3G to 2B to 1E in Guitar mode, or through LB to 4E to 3A to 2D to 1G to HC in Bass mode.

Quinta Flat Tuning Mode

To support the dropped tunings used in heavy metal styles to produce a powerfully massive sound, the GA-40 provides a Quinta Flat Tuning mode that lets you detect dropped tunings of one through five semitones. This lets you tune super-long scale guitars that extend below the pitch range of conventional guitars.

Conveniently Thin and Compact

The GA-40 gives you convenient guitar and bass tuning functionality in a pocket-sized package, making it easy to tune whether you're on stage or in the studio. An output jack (bypass) has been added, making it easy to check the tuning even while you're performing. The stand on the back lets you place the tuner on any surface.

Auto Power Off Function

The Auto Power Off function automatically turns the power off after the unit has been left on for twenty minutes, preventing the batteries from running down needlessly.

Approximately 85 Hours of Continuous Use

The GA-40 is designed for long battery life, and allows approximately 85 hours of continuous use (continuous A4 input, Meter mode, zinc-carbon batteries).

Note: Even if a sound is within the detectable pitch range, detection may be unsuccessful for instrumental sounds that contain a large number of overtones or that decay rapidly. Specifications subject to change without notice.
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Scale: 12-note equal temperament

Detection Range:
Guitar: B1 bbbbb (46.249 Hz) - B6 (1975.54 Hz)
Bass: B0 bbbbb (23.12 Hz) - B5 (987.77 Hz)

Reference Tone:
Guitar: 7B, 6E, 5A, 4D, 3G, 2B, 1E
Bass: Low B, 4E 3A, 2D, 1G, High C

Tuning Modes: Meter mode (Auto), Sound Out mode (Manual)

Flat Tuning: Semitone steps: 1 semitone (b) to 5 semitones (bbbbb)

Detection Accuracy: +/- 1 cents or better

Connectors: Input jack (1/4 in. monaural phone jack)

Speaker: Dynamic speaker (28 mm diameter)

Power Supply: 2 AAA batteries (3V)

Battery Life: Approximately 85 hours (Meter mode, continuous A4 input, zinc-carbon batteries)

Dimensions: 3.94 in. (W) x 2.64 in. (D) x 0.67 in. (H)/100 (W) x 67 (D) x 17 (H) mm

Weight: 0.19 lbs. (88 g) (Including batteries)

Included Items: 2 AAA batteries for verifying operation

Specifications subject to change without notice
For support or warranty questions, please contact the manufacturer:
Phone: 631-390-6800
(11 ratings)
Submitted January 20, 2018 by Sotero Rivera in NEW MILFORD, CT
"Good tuner for acoustic guitar."
Verified Customer zZounds has verified that this reviewer made a purchase from us.
Been using this tuner for about 20 years for my acoustic and classical guitars. I would not use anything else. Works great for the bass guitar also. You don't have to plug it in anywhere. Just turn it on and use.
Musical Background:
Rock, metal, classical guitar.
Musical Style:
Rock and metal.
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