KORG AW-OTB POLY - OLED Polyphonic Clip-On Bass Tuner with Tempo Detection

KORG AW-OTB POLY - OLED Polyphonic Clip-On Bass Tuner with Tempo Detection

The KORG AW-OTB POLY is a clip-on chromatic tuner designed specifically for bass guitar, featuring a high-contrast OLED display that’s instantly readable from any angle. Polyphonic mode lets you play all open strings (E–A–D–G or B–E–A–D–G on 5-string basses) and see at a glance which ones need tuning. It features 10 display types —including strobe —with an accuracy of up to ±0.1 cent (in strobe), plus tempo detection to keep track of your bass line in real time. Calibration covers A4 = 436 to 445 Hz , and supports flat tuning (–1 to –5) and capo options (+1 to +7) . With approximately 18 hours of battery life using a single AAA battery and an automatic power-off after ~3 minutes of no signal, it’s a reliable tool for live performance, rehearsal, and the studio.

The mounting system combines a high-grip clamp with an articulated arm and ball joint to precisely orient the display on all types of headstock. The bass-specific detection range (B0–D4) and optimized low-frequency circuitry enhance stability on low notes. It includes a backup memory to retain your settings and comes with a AAA test battery and a quick start guide to get started right away.

Main features

• Clear and fluid OLED display , visible from any angle.
• Polyphonic tuning : play all open strings and correct at a glance.
• 10 display modes (including strobe ); accuracy up to ±0.1 cent in strobe.
• Bass range : B0–D4, suitable for 4 and 5 string basses (Low-B).
• Tempo detection (80–160 bpm) to lock in your groove on the fly.
• A4 calibration of 436–445 Hz; flat tuning –1 to –5 and capo +1 to +7 .
• Settings backup memory and auto-off after ~3 minutes of no input.
• Robust clip with movable arm and ball joint for flexible and stable positioning.
• Powered by 1 × AAA and autonomy approx. 18 h .
• Lightweight and compact design : 35g; 51×64×71mm.

Benefits for bassists

• Faster bass tuning : circuit optimized for notes below 100 Hz and B0 range that stabilizes Low-B.
• Instant readability : High-contrast OLED and animations confirm “on key” without a doubt, even in dark settings.
• Beat control : Tempo detection helps you lock in with the drums and keep your timing .
• Ready for any repertoire : wide calibration and flat transposition/capo for repertoire in different tunings.
• True portability : minimal size, long battery life, and memory that preserves your preferences.

Use cases

• Live : polyphonic checking between tracks and fine tuning in strobe mode.
• Rehearsal : Set the tempo of a new line and stabilize new chords quickly.
• Studio : ±0.1 cent accuracy for critical shots and clean dubbing.

Frequently Asked Questions

• Does it recognize all the strings at once? Yes. In polyphonic mode, it plays all the open strings, and the display indicates which ones are out.
• Does it work for 5-string basses? Yes. The B0–D4 range covers Low-B without any problems.
• What calibration does it support? A4 = 436–445 Hz in 1 Hz steps.
• How long does the battery last? Approximately 18 hours with one AAA alkaline battery (continuous use).
• Does it turn off automatically? Yes, after ~ 3 minutes without a signal.

Description for projects

Clip-on chromatic bass tuner with OLED display; polyphonic tuning; accuracy up to ±0.1 cent (strobe mode); range B0–D4; tempo detection 80–160 bpm; A4 calibration = 436–445 Hz (1 Hz); transposition Flat −1 to −5 and Capo +1 to +7; 10 display types; auto-off ~3 min; memory backup; power supply 1 × AAA; battery life approx. 18 h; dimensions 51 × 64 × 71 mm; weight 35 g; includes quick start guide and 1 AAA test battery.