Korg CA-2 Chromatic Tuner

Korg CA-2 Chromatic Tuner — Precision Chromatic Tuning for Every Musician

When your performance demands flawless intonation, the Korg CA-2 Chromatic Tuner delivers the accuracy and reliability that musicians have trusted for decades. Whether you’re tuning a guitar, bass, violin, or virtually any orchestral instrument, the CA-2’s wide detection range and crystal-clear meter make achieving perfect pitch effortless.

Wide Detection Range for Any Instrument

The CA-2 supports 12-note equal temperament with a detection range spanning from A0 (27.50 Hz) all the way up to C8 (4186.01 Hz). This expansive range means you can tune everything from the deepest bass notes to the highest treble strings with a single, dependable device.

Dual Tuning Modes

Choose between Meter mode for fast, visual pitch reference or Sound Out mode, which produces a reference tone via sine wave across one octave (C4–C5). This flexibility makes the CA-2 equally useful for silent stage tuning or ear-training practice sessions.

Flexible Calibration

Calibrate the reference pitch from A4 = 410 Hz to 480 Hz in precise 1 Hz steps, allowing you to match the tuning of any ensemble or recording session with confidence.

Long-Lasting Battery Life

Powered by two AAA batteries, the CA-2 keeps going through gig after gig. Enjoy approximately 200 hours of continuous use with alkaline batteries in Meter mode, or approximately 100 hours with zinc-carbon batteries — so you’ll spend more time playing and less time replacing batteries.

Compact and Portable

Measuring just 100 × 60 × 16 mm and weighing only 67 g (including batteries), the CA-2 slips easily into any gig bag, pocket, or instrument case. It’s the ultimate grab-and-go tuner for rehearsals, lessons, and live performances.

Technical Specifications

Specification
Details

Tuning System
12-note equal temperament

Detection Range
A0 (27.50 Hz) – C8 (4186.01 Hz)

Sound Out (Sine Wave)
C4 (261.63 Hz) – C5 (523.25 Hz), one octave

Tuning Modes
Meter mode, Sound Out mode

Calibration Range
A4 = 410 Hz – 480 Hz (1 Hz steps)

Detection Accuracy
±1 cent

Sound Out Accuracy
±1.5 cents

Input
1/4″ monaural phone jack (INPUT)

Power Supply
Two AAA batteries (3V)

Battery Life (Alkaline)
Approx. 200 hours (Meter mode, A4 continuous input)

Battery Life (Zinc-Carbon)
Approx. 100 hours (Meter mode, A4 continuous input)

Dimensions
100 × 60 × 16 mm (3.94″ × 2.36″ × 0.63″)

Weight
67 g / 2.36 oz. (including batteries)

Included Accessory
Contact Microphone CM-200

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