KORG GA-1 Solo Tuner, unused guitar item. This is a high-precision tuner GA-1 model for guitar and bass. - Brand: KORG - Model: GA-1 - Function: Guitar and bass tuner - Input Type: Microphone or jack - Tuning Range: Up to 6th string of guitar - Tuning Accuracy: ±1 cent - Power: AAA batteries Thank you for viewing.