Korg GA1 Guitar Tuner


Korg GA1 Guitar Tuner

The perfect entry level tuner, the GA-1 does everything you'd expect from a tuner and more for under a tenner! Tune stringed instruments including 7 string guitars and 6 string basses with the accurate needle tuner.

Need more from your tuner?

Check out the Boss TU80 with built in metronome, chromatic tuning and guitar output so you can have it in your pedal chain.

Here's what Korg say about the GA1

Ultra-compact LCD Needle-Style Chromatic & Dedicated Guitar and Bass Tuner. This dedicated guitar/bass tuner lets you select either Guitar mode or Bass mode for truly easy operation with automatically detected pitch. The wide detection range supports 7-string guitar (7B through 1E) in Guitar mode, and 6-string bass (Low-B, Hi-C) in Bass mode. A high-sensitivity mic is built-in, allowing easy and accurate tuning of acoustic guitars.

High accuracy and superb functionality have made Korg tuners the worldwide favourite. And now, the new GA-1 replaces the industry standard and best-selling GA-30 tuner. With great features, like a pitch reference tone and quinta-flat tuning (GA-1), this tuner packs basic functionality and convenient tuning functions into new styled compact body

Ultra-compact Body with a "Tilt Slit"

Although the GA-1 is small, thin, and light, don't let the pocket-sized body fool you. The GA-1 can accurately tune a wide range of instruments. From studio to stage, tuning is easy and convenient. The back of the unit includes a unique arc-shaped "tilt slit" that lets you insert a plastic card for use as a handy stand..

High-Precision LCD Meter

The meter section uses a LCD needle, combining the accuracy of an LCD with the easy visibility of a needle, and providing a stable display. Additional visual feedback is provided by LEDs that indicate pitch deviation.

Sound Out -- Internal Speaker Provides a Reference Pitch

In addition to visual tuning via meter, the GA-1/CA-1 can play reference pitches from the internal speaker (Sound Out) for tuning by ear. Each press of the Sound switch will cycle the output sound notes. On the GA-1, 7B->6E->5A->4D->3G->2B->1E in Guitar mode, or LB->4E->3A->2D->1G->HC in Bass mode. On the CA-1, A4-Bb4 notes commonly used for tuning wind instruments. Or you can hold down the Sound switch to change the cycle to the semitone intervals from C4 through C5 (one octave), allowing reference pitches for any instrument to be sounded quickly.

Quinta Flat Tuning mode (GA-1)

The GA-1's Quinta Flat Tuning mode supports the lowered tunings used in heavy metal styles to give more weight to the sound. Many dedicated guitar tuners only support a maximum of four semitones below standard pitch, but the GA-1 gives you five steps of flatted tuning, extending as far as five semitones below standard pitch, and supporting even super-long scale guitars that are five frets longer than conventional guitars.

Adjustable Calibration (CA-1)

The Calibration function (410-480 Hz) supports a wide range of standard pitches, and can be adjusted in 1 Hz steps for accurate and flexible tuning to any song or key. Thanks to the Memory Backup function, the Calibration and reference pitch are remembered even when the power is turned off. (However, these settings will be initialized when the batteries are replaced.)

Auto Power Off Function

If you leave the unit powered-on for 20 minutes without performing any operation, the Auto Power Off function will turn the power off automatically, avoiding unnecessary battery consumption.

Approximately 100 hours of continuous use

Low-power consumption design allows an amazing 100 hours (approximate) of continuous battery life (A4 continuous input, Meter mode, zinc-carbon batteries).


  • Ultra-compact design.
  • High-precision LCD needle-type meter for stable tuning.
  • Quinta Flat Tuning mode lets you tune 1--5 semitones flat (GA-1)
  • Supports 7-string guitar tunings. (GA-1)
  • CA-1 is ideal for brass band or orchestra with a wide pitch detection range: C1-C8
  • Calibration Function (CA-1) supports a variety of concert pitches
  • Sound Out can produce a reference tone from the internal speaker.
  • Auto Power Off function conserves battery life.
  • Approximately 100 hours of continuous use.
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