KORG Magnetune - Ultra-compact, easy-to-read magnetic guitar tuner

KORG Magnetune - Ultra-compact, easy-to-read magnetic guitar tuner

The KORG Magnetune is a chromatic guitar tuner that attaches magnetically directly to the headstock or strap button, eliminating the need for a clip and minimizing weight. A 360° rotating magnet ring lets you angle the tuner to any angle—on both right- and left-handed guitars—and provides an easy-to-read LED display that indicates the detected string, pitch (high/low), and deviation from the correct tuning. With an accuracy of ±1 cent , a range of E2 to E7 , and a fixed reference at 440 Hz , it delivers clear, stable readings in a tiny 33 × 35 × 13 mm (1.3 × 1.3 × 0.5 in) form factor and a weight of just 11 g ( 0.3 oz). Its simple design prioritizes battery life, achieving approximately 30 hours of continuous operation and automatically shutting off after approximately 3 minutes of inactivity to conserve battery life.

Main features

• Direct magnetic attachment: Attaches to the tuning peg or strap button; mounts and removes in seconds.
• 360° rotating ring: allows you to orient the screen for comfortable reading in any position.
• Smart LED indicators: Display string number, tuning direction (high/low), and distance to target pitch by flashing.
• Precise chromatic tuning: ±1 cent accuracy; 12-note scale (equal temperament) .
• Tuning range (sine wave): E2 (82.41 Hz) – E7 (2637.02 Hz) , optimized for guitar.
• Reference: A4 = 440 Hz (fixed).
• Battery life and power management: approximately 30 hours of continuous use and auto-off after approximately 3 minutes of non-use.
• Ultra-light format: 33 × 35 × 13 mm body and 11 g (with battery), discreet and “invisible” to the public.
• Includes CR2032 (3 V) battery for operational verification.

Product benefits

• Clean and aesthetic setup: by not using a clamp, it does not distract or alter the line of the instrument live.
• Instant read: LEDs communicate string and necessary correction without confusing menus or symbols.
• Always at hand: leave it attached to the headstock or strap button to tune between songs without searching for accessories.
• Maximum portability: fits in any pocket of the case and adds virtually no weight.
• Fewer battery changes: Low-power design plus auto-off for longer battery life.

Use cases

• Quick tuning in low-light scenarios by taking advantage of status LEDs.
• Rehearsals and classes: Attach to the strap button to keep it visible without taking up space on the music stand.
• Left-handed guitars or unusual configurations: free ring orientation for natural reading.

Frequently Asked Questions

Does it work for bass?
No. The Magnetune's range starts at E2 (82.41 Hz) , while the fourth string of the standard bass is E1 (41.2 Hz) , out of range.

Where can I place it?
On the headstock (above the metal housing of the tuner) or on the strap button . Avoid non-metallic surfaces.

Should we be careful with the magnet?
Yes. Keep the magnet away from magnetic cards, watches, hard drives, and devices sensitive to magnetic fields.

Recommendations for use and care

• Don't leave it permanently attached: over time, the contact of the magnet can mark certain finishes.
• Clean with a dry cloth; avoid liquids or solvents.
• Replace the battery when the string number LED flashes continuously.

Description for projects

KORG Magnetune chromatic guitar tuner with magnetic mount and 360° rotating ring; LED display of string number, direction, and deviation; accuracy ±1 cent; range E2–E7 (sine wave); fixed reference A4 = 440 Hz; auto-off ~3 min; battery life approx. 30 h; power supply 1× CR2032; dimensions 33 × 35 × 13 mm; weight 11 g; includes 1 CR2032 battery (tested).