Korg GA-CS Custom Shop Chromatic Tuner
Product #65541 | SKU KOR-GA-CS
Availability on Request
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Korg GA-CS Custom Shop Chromatic Tuner

Product #65541 | SKU KOR-GA-CS
Availability on Request

Product Features
  • “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.
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Product Details
  • Product: #65541
Not currently for sale
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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: Korg GA-CS Custom Shop Chromatic Tuner.

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 rubberized 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.

Three types of display modes are offered: Regular, Strobe, and Half Strobe. Each mode can be easily selected according to the user’s preference. Strobe and Half Strobe mode reflect the extreme precision of the GA Custom, making it more convenient to tune accurately. In addition to the standard black, this tuner is available as a limited edition of color variations. Choose vivid red, bright blue, or sophisticated white.

Korg is resolved to continue to create innovative and uncompromising instruments and accessories which maintain the high quality that inspires professional artists and creators, and yet are approachable enough for anyone to play. The musical instruments Korg will deliver are reflections of the ideas and values of the many artists and users who continue to love Korg products - now and into the future.


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 batteries)
Dimensions (W x D x H)
99 x 65 x 16 mm / 3.90" x 2.56" x 0.63" (including feet)
83g / 2.93 oz. (including battery)
Included Items
Two AAA batteries for verifying operation

Delivery Times

Australian Shipping Via DHL
DHL now offer a great express shipping service to Australia from New Zealand. We are proud to be able to offer overnight shipping to main cities on the east coast of Australia. These main centers include:

  • Brisbane
  • Sydney
  • Adelaide

Whilst this service is extremely efficient and will be delivered overnight 99.9% of the time, it cannot be guaranteed. In the case where something were to go wrong with your delivery and it did not arrive overnight, it will most likely be delivered by the next day.

While not all major cities are eligible for overnight delivery, they still benefit from this great service. Other centers throughout Australia will have a typical delivery ETA of 2-4 days. (Excluding rural delivery address where this ETA can be extended to an additional three or more days).

If you require urgent shipping and you don’t reside in one of the cities stated above, please contact us and we can find a solution that works best for you.

Please Note: Shipping via DHL is not available to PO boxes and/ or parcelboxes etc.

In The Box

  • Korg GA-CS Custom Shop Chromatic Tuner.


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  • Product: Korg GA-CS Custom Shop Chromatic Tuner
  • Manufacturer: Korg
  • Model: KOR-GA-CS
  • RM Product #: 65541