KORG GM-1 4-Pack - In-Ear Group Metronome with Infrared Sync (4-Pack)

KORG GM-1 4-Pack - In-Ear Group Metronome with Infrared Sync (4-Pack)

The KORG GM-1 is an ultra-compact in-ear digital metronome that fits in one ear like a headset and allows multiple performers to practice to the same tempo in sync . This 4- pack is ideal for marching bands, brass or woodwind ensembles, dance groups, and on-the-go rehearsals. Infrared communication makes it easy to sync between devices (one acting as the “source” and the others as “replicas”), while the display and jog switch control make it easy to set tempo (30–252 BPM) , time signature (0–9 beats), eight rhythm patterns , volume, and click pitch. It weighs just 9g with battery and offers up to 100 hours of runtime on a single CR2032 (3V) coin-cell battery. Three eartip sizes (S, M, L) are included for a secure fit and clear listening even in noisy environments.

Main features

• GM-1 4-Pack : Four in-ear metronomes for section or group work.
• Infrared Sync : Shares time between multiple units; one device acts as the source and the others follow as replicas .
• Wide tempo range : 30–252 BPM with ±0.1 accuracy.
• Beats : 0 to 9 beats to cover everything from free pulses to compound metrics.
• Rhythmic patterns (8): quarter notes; duplets; triplets; triplets with omitted inner beat; triplets omitting the third beat; quadruplets; quadruplets omitting middle beats; quadruplets omitting third and fourth beats.
• Simple control : Mode/Power and Sync/Mute buttons, jog switch and display to navigate tempo, beat, rhythm, volume and pitch.
• Click Volume and Tone : 3 volume levels and 3 tone levels to adapt to your hearing.
• 12mm piezoelectric speaker optimized for clarity in the ear canal.
• Ultra-compact size : 49 × 22 × 22 mm and 9 g (with battery) per unit; ear clip and eartips in three sizes.
• Battery life : approx. 100 hours of continuous use (120 BPM, 4/4, quarter note click, low volume).
• Backup Memory : Saves the last settings after a proper shutdown.

Product benefits

• Solid joint timing : The entire section rehearses to the exact same beat, improving accuracy, input, and consistency.
• Total mobility : in-ear and clip format to move freely in parades, wind blocks or dance routines without depending on external speakers.
• Set and forget : direct access to tempo/beat/rhythm and settings memory for repeat sessions.
• Comfort and isolation : S, M and L eartips for a stable seal and clear listening above ambient noise.
• Low operating cost : Long-lasting CR2032 battery with up to 100 hours per unit.

Use cases

• Marching and brass bands : synchronize the drum line and wind sections during marching and choreography.
• Chamber groups and ensembles : fine-tune entrances and cuts in complex passages without resorting to external clappers.
• Dance and drill schools : coordinate movements with a common pulse in large rooms or outdoors.

Frequently Asked Questions

• How do you sync multiple units? Physically align a "source" unit with a "replica" unit and press SYNC on the source unit; the tempo, beat, and rhythm are copied to the replica unit. Repeat the process for the other units.
• Is it compatible with KORG SyncMetronome? No. The GM-1 cannot be synchronized with SyncMetronome.
• What's included with each unit? User manual, CR2032 (3V) battery , and S/M/L eartips.
• Can I temporarily mute the click? Yes, press and hold SYNC to mute , then press again to unmute.

Description for projects

In-ear digital metronome with infrared synchronization; tempo 30–252 BPM (accuracy ±0.1); beats 0–9; 8 rhythm patterns; 3-level volume; 3-level click tone; 12 mm piezoelectric speaker; Mode/Power, Sync/Mute, jog switch and display controls; memory backup; CR2032 power supply (3 V), approx. 100 h battery life; dimensions 49 × 22 × 22 mm; weight 9 g (with battery); included per unit: manual, CR2032 battery and S/M/L eartips. Pack with 4 units.