KORG Rimpitch-C2 – Soundhole Mounted Chromatic Tuner for Acoustic Guitar

KORG Rimpitch-C2 – Soundhole Mounted Chromatic Tuner for Acoustic Guitar

The KORG Rimpitch-C2 is the latest version of the internal tuner for acoustic guitar, discreetly positioned in the instrument’s circular soundhole . Its ultra-slim design places the LED meter across the front for immediate readability in any lighting situation, and employs a contact-type piezoelectric cell that detects guitar vibration quickly and accurately. It fits into Ø 100 mm ± 3 mm holes using rubber pads on both sides, ensuring a firm grip without damaging the finish. The indication system is very clear: when the tuning is correct, the center segment of the meter lights up brightly, and the left and right LEDs flash briefly to confirm at a glance that the note is in tune. With an accuracy of ± 1 cent , a detection range of E2–E7 , and A4 calibration of 438–445 Hz , the Rimpitch-C2 covers standard and alternate tunings with chromatic readability. Its included CR1620 battery offers up to 36 hours of continuous use and features a 3-minute auto-off to save energy.

Main features

• Internal mounting in the guitar soundhole: natural reading without attracting attention on stage.
• High-visibility LED display : the meter occupies the entire screen and reflects the “needle movement” with intensity variations.
• Double tuning confirmation : meter center illuminated + left/right LED flashing when the note is nailed.
• Piezo sensing : fast and stable response from instrument vibration, without microphone.
• Secure fit : inner and outer rubber pads; suitable for circular mouths Ø 100 mm ± 3 mm .
• Chromatic (any scale/key) with adjustable A4 calibration 438–445 Hz .
• Accuracy ± 1 cent; range E2 (82.41 Hz) – E7 (2637.02 Hz).
• Auto power off after ~3 min without input and calibration memory (reset when battery is changed).
• Dimensions 79 × 32 × 17 mm; weight 13 g (with battery); includes CR1620 .

Product benefits

• Total discretion : avoid visual distractions from clip-on tuners; read directly in your field of vision while playing.
• Greater clarity : Full-front metering and double confirmation flashing speed up tuning in dark rooms.
• Zero interference : Vibration pickup maintains accuracy even in ambient noise.
• Instrument protection : contact is made on rubber, minimizing marks on the rosette.
• Energy efficiency : up to 36 hours of continuous use and auto-off after 3 minutes.

Use cases

• Direct and rehearsed : quick tuning between songs without attracting the audience's attention.
• Study and practice : constant reading without having to take your eyes off the tuning fork.
• Acoustic or electroacoustic guitars with a circular soundhole within the installation range.

Frequently Asked Questions

• Does it work for classical (nylon) and acoustic (steel) guitars? Yes, as long as the soundhole is round and Ø 100 mm ± 3 mm.
• Do you need silence to tune? No; it picks up the instrument's vibration using a piezo, so it works in noisy environments.
• Can I use alternate tunings? Yes; it's chromatic and allows you to calibrate the reference A between 438 and 445 Hz.
• How does it warn of a low battery? The meter's center LED dims and the note indicator flashes; replace the CR1620.

Description for projects

Chromatic tuner for acoustic guitar with soundhole mounting, Ø 100 mm ± 3 mm; piezo detection; accuracy ± 1 cent; range E2–E7; calibration A4 438–445 Hz; auto-off 3 min; dimensions 79 × 32 × 17 mm; weight 13 g; power supply 1 × CR1620 (included); front LED meter with flashing confirmation.