For nearly a decade, the Korg GA-30 Guitar/Bass & CA-30 chromatic tuners have stood among
the top-selling tuners on the planet. Now meet the GA-1 & CA-1, offering the same excellent
features with a new, enhanced design – all at an even better price!
Ultra-compact LCD Needle-Style Chromatic & Dedicated Guitar and Bass Tuners
High accuracy and superb functionality have made Korg tuners the worldwide favourite. And now, the new GA-1/CA-1 replace
the industry standard and best-selling GA-30/CA-30 tuners. With great features, like a pitch reference tone, quinta-flat tuning
(GA-1) and marks for pure major thirds (CA-1), theses tuners pack basic functionality and convenient tuning functions into
new styled compact bodies.
• 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.
GA-1: An Easy-to-Use 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.
CA-1: Wide Range of Pitch Detection
This compact chromatic tuner supports a broad range of C1 (32.70 Hz)-C8 (4186.01 Hz), allowing speedy and high-precision
tuning of wind, string, keyboard, and other instruments. This tuner is ideal for tuning even low-register notes containing
numerous overtones that are often difficult to tune. A high-sensitivity mic is built-in, allowing easy and accurate tuning of
acoustic instruments such as ukuleles. A separately sold CM-100 contact mic can also be used to send the vibrations directly
to the tuner for even more accurate tuning.
Ultra-compact Body with a "Tilt Slit"
Although the GA-1 & CA-1 are small, thin, and light, don’t let the pocket-sized body fool you. The GA-1/CA-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).
* Even if the pitch is within the detection range, detection may not be possible for instrumental sounds that contain a large
number of overtones or have a rapid decay.