Korg CA-2 Chromatic Tuner

Fast, accurate tuning in a slim, easy-to-read design

The Korg CA-2 Chromatic Tuner is a dependable, high-visibility tuner for students, teachers, and performing musicians who need quick, confident tuning in lessons, rehearsals, and concerts. Its needle-style LCD meter is easy to read at a glance, making it especially useful in orchestra and band settings where speed and clarity matter. With a wide detection range, the CA-2 works for violin, viola, cello, bass, guitar, ukulele, winds, and brass—using the built-in microphone for acoustic instruments or the 1/4" input for direct connection.

For ensembles that don't tune exactly to A=440, the CA-2 offers adjustable calibration from 410–480 Hz in 1 Hz steps, so you can match your group's concert pitch precisely. Sound Out mode provides reference tones through the built-in speaker for ear training and quick pitch checks, and strong battery life keeps it ready for daily practice and frequent travel.

Features & Specifications

• Tuning Modes: Meter mode and Sound Out mode for visual tuning or tuning by ear.
• Detection Range: A0 (27.50 Hz)–C8 (4186.01 Hz).
• Calibration Range: A4 = 410–480 Hz (1 Hz steps) for flexible concert pitch.
• Accuracy: Detection accuracy ±1 cent; sound accuracy ±1.5 cent.
• Reference Tone: C4–C5 (one octave) via built-in speaker.
• Input: 1/4" monaural INPUT jack for direct connection.
• Power & Battery Life: Two AAA batteries; approx. 200 hours (alkaline, meter mode, continuous A4 input).
• Size & Weight: 100 × 60 × 16 mm; 67 g (including batteries).
• Optional Accessory: Compatible with Korg CM-200 contact microphone (sold separately).