KORG GT-6 Guitar Tuner

The KORG GT-6 is a vintage needle-style guitar and bass tuner from KORG’s early tuner line, combining quick, accurate pitch detection with a loud internal magnetic meter, dual input/output paths, and a rugged build. With both built-in mic and ¼″ input for electric or acoustic instruments, it’s a flexible, road-ready tuner that’s as useful in the studio as on-stage. Ideal for players chasing a classic vibe, straightforward tuning or a reliable backup tuner.

• Needle-style analog meter for easy-to-read pitch indication. 
• Dual signal path: built-in microphone or ¼″ jack input, and it works with acoustic or electric instruments. 
• ¼″ mono output (amplifier output) that lets you keep playing through the amp when tuning is done. 
• Tuning adjustment: meter calibrated to standard pitch (A = 440 Hz), useful for standard or alternate tunings. 
• Compact and lightweight. Around ~ 250–275 g and is portable and pedal-board-friendly. 
• Powered by a 9 V battery (6F22 type). No external power supply needed, making it simple for mobile rigs or quick tuning.