The Boss TU-12 Chromatic Tuner has a built-in condenser mic for acoustic instruments and can be calibrated for either guitar or bass.
Video: https://youtu.be/e773JS4OS8g?t=186
Product Specs
- Item Number: 29273
- Make: BOSS
- Model: TU-12 Chromatic Tuner
- Condition: Very Good
- Finish: Grey
- Categories: accessories ⇒ tuners ⇒ pedal
- Year: 1990
- Made In: Japan
- MPN: 29273