KORG CA-2 - Pocket Chromatic Tuner with Large Display and Long Battery Life

KORG CA-2 - Pocket Chromatic Tuner with Large Display and Long Battery Life

The KORG CA-2 is a compact chromatic tuner designed for fast, accurate tuning on all types of instruments, from brass and woodwind to strings and keyboards. Its needle indicator display and enlarged note name area make it easy to read, even from a distance, while dedicated LEDs help identify if the tuning is above or below the desired pitch. With a wide detection range (A0–C8), adjustable calibration from 410 to 480 Hz, and Sound Out mode with a built-in speaker, the CA-2 provides reliable tuning in the studio, classroom, band rehearsal, or orchestra. Its lightweight, rounded body is comfortable to carry and features a convenient slide-out battery compartment for quick battery replacement. Battery life reaches approximately 200 hours on alkaline batteries, ideal for intensive use.

Main features

• Wide Range Chromatic Tuning : Detection from A0 (27.50 Hz) to C8 (4,186.01 Hz) for wind instruments, strings, keyboards and more.
• Clear display with needle : larger note name area and red/green LED to confirm tuning deviation at a glance.
• Flexible Calibration : A4 adjustable between 410 and 480 Hz in 1 Hz steps to suit various concert tunings.
• Sound Out Mode : Generates C4–C5 reference tones using the built-in speaker for tuning by ear.
• Pure third markings : References on the meter scale for adjusting major and minor thirds in ensembles and achieving cleaner harmonies.
• 6.35 mm (1/4”) input : Mono connector for instrument or optional contact microphone (KORG CM-200).
• Long battery life : up to ~200 hours with two AAA alkaline batteries.
• Portable Construction : 100×60×16mm and 67g (with batteries), with rounded design and sliding battery compartment.

Product benefits

• Consistent Accuracy : ±1 cent detection accuracy and ±1.5 cent output pitch for consistent results in studio, lectures, and rehearsals.
• Instant read : The needle and LEDs eliminate confusion in noisy or dimly lit environments.
• True Versatility : The wide A0–C8 range and 410–480 Hz calibration cover everything from bass to treble instruments and repertoires with specific tunings.
• Comfortable to use : The built-in microphone allows for on-the-fly acoustic tuning; with the CM-200, you can isolate vibrations in noisy environments.
• Fewer battery changes : High battery life reduces downtime and maintenance costs.

Use cases

• Band and orchestra : fast tuning by section taking advantage of pure third markings to improve chord intonation.
• Classes and study : stable reference for students and teachers with the ability to calibrate to 442 Hz or other standards.
• Luthiery and maintenance : reference tuning for instrument adjustments thanks to its precision and tone output.

Frequently Asked Questions

• Can it be used for guitar, bass, violin, or wind instruments? Yes. The A0–C8 range and built-in microphone cover string, wind, and keyboard instruments. You can also connect the instrument output or a contact microphone to the 6.35 mm jack.
• Can I calibrate to A=442 Hz? Yes. Calibration is adjustable between 410 and 480 Hz in 1 Hz steps.
• Are batteries included? Two AAA batteries are included for testing purposes.

Description for projects

KORG CA-2 chromatic tuner with 12-note scale (equal temperament), detection range A0 (27.50 Hz)–C8 (4,186.01 Hz), reference pitch C4–C5, Measure and Sound Out modes, calibration A4=410–480 Hz (1 Hz), detection accuracy ±1 cent and sound accuracy ±1.5 cent, LCD display with needle indicator and LED, built-in microphone and speaker, 6.35 mm monaural input jack, power supply 2×AAA (3 V), battery life approx. 200 h (alkaline), dimensions 100 × 60 × 16 mm, weight 67 g, compatible with KORG CM-200 contact microphone; includes 2 AAA batteries for function test.