Korg GACS Custom Guitar and Bass TunerTune onstage, at rehearsal, or in the studio quickly with the Korg GA Custom tuner. Based on Korg's popular GA series tuners, the GA Custom offers enhanced visuals, accuracy, and easy readability. The large 3 D display is bright and easy to see in the club or at outdoor gigs. From drop tunings to standard tuning to bass guitars, this cool tuner has you covered. The GA Custom gives you up to 40 hours of continuous work from 2 AAA batteries. Don't be