Korg GACSBK GA Custom Chromatic Guitar and Bass Tuner – Black

SKU: GACSBK Categories: , ,

This Custom Chromatic Tuner from Korg is perfect for guitar and bass and features stunning visibility and pin-point precision, to go. Compact tuner with ultra-high ±0.1 cent precision.


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Card-type compact tuners have long-been KORG’s most popular tuners. The diverse lineup includes the GA series for guitar/bass and the multi-use CA series, and has continued to support the tuning needs of beginners and professionals alike. We now introduce a new model: the GA Custom. The GA Custom features a large 3D visual meter, the first of its kind for a compact tuner. Three-dimensional lights and versatile display modes deliver an unprecedented level of visibility. Its ultra-high ±0.1 cent tuning precision also meets professional needs. The flat body with rubberised exterior is even more compact and portable than ever. A high-sensitivity mic is built-in, allowing it to be used not only with guitar/bass but also with orchestral and acoustic instruments. The GA Custom is a new type of compact tuner that packs a ton of high-end functionality into a convenient and highly portable package.


    • “Custom Shop,” the mark of ultimate quality
    • 3D visual meter with revolutionary visual effects
    • Ultra-high tuning accuracy of +/- 0.1 cents
    • Three meter display modes
    • Compact flat design provides a large screen and easy portability
    • High-sensitivity mic is built-in, allowing use with acoustic & orchestral instruments
    • Lineup includes limited-edition color variation models.


Scale: 12 note equal temperament
Detection Range:
A0 (27.50 Hz) – C8 (4186 Hz)
Calibration Range:
436 – 445 Hz (1 Hz steps)
Detection Accuracy:
within +/- 0.1 cent
Input Impedance:
1 MΩ (when tuner is on)
INPUT (mono 1/4″ jack), BYPASS (mono 1/4″ jack)
Power Supply:
Two AAA batteries
Battery Life:
approximately 50 hours (A4 continuous input, tuner on, display mode: Regular, using two AAA zinc-carbon
(W x D x H) 99 x 65 x 16 mm (including feet)
83g (including battery)
Included items:
Two AAA batteries for verifying operation

For more information, please visit the manufacturer's website.