The GA-1 from Korg is an ultra-compact guitar and bass tuner, ideal for aspiring and professional musicians. The tuner features a highly-precise and stable LCD needle-style display, along with LED indicators. The tuner supports 7-string guitars, and has a Quinta flat tuning mode that lets you tune your instrument between 1-5 semitones flat.

The tuner has a Sound Out function that produces a reference tone from the built-in speaker. An auto power-off function preserves battery life when the tuner is not in use. The low-consumption design lets the tuner operate for up to 100 continuous hours.