Korg GA-40 Guitar and Bass Tuner Review

Korg GA-40 Large Display Guitar and Bass Tuner

Korg GA-40 is currently on sale on Amazon US | Amazon UK | Amazon Canada

Korg GA-40 is a user friendly and self- explanatory guitar / bass tuner. It designed with a large LCD screen with needle style display. Tuner’s compact size gives user great convenience – make it easy to use at home or on stage.


The design of Korg GA-40 is brilliant. The line input is perfect for guitarist and bassist in tuning their instruments through a patch chord for the optimal sound. The tuner’s ability to support 6 string basses and 7 string guitars provide great help to the user, when using drop tuning for heavier metal that relies on power chords performed in dropped scales rather than the standard tuning.

The screen display of Korg GA-40 is big enough for easy reading. The tuner work pretty well and display the pitch accurately. This tuner comes with a fold out back to self-support as a fold away stand. You can just put it on the table while tuning. The Auto Power Off function automatically turns the power off after the unit has been left on for 20 minutes, preventing the batteries from running down needlessly. Read more user reviews.


  • Scale: 12-note equal temperament
  • Detection Range:
  • Guitar: B1 bbbbb (46.249 Hz) – B6 (1975.54 Hz)
  • Bass: B0 bbbbb (23.12 Hz) – B5 (987.77 Hz)
  • Reference Tone:
  • Guitar: 7B, 6E, 5A, 4D, 3G, 2B, 1E
  • Bass: Low B, 4E 3A, 2D, 1G, High C
  • Tuning Modes: Meter mode (AUTO), Sound Out mode (MANUAL)
  • Flat Tuning: Semitone steps: 1 semitone (b) to 5 semitones (bbbbb)
  • Detection Accuracy: +/- 1 cents or better
  • Connectors: INPUT jack (1/4” monaural phone jack)
  • Speaker: Dynamic speaker (28 mm diameter)
  • Power Supply: Two AAA batteries (3V)
  • Dimensions: 3.94”(W) x 2.64” (D) x 0.67” (H)/100 (W) x 67 (D) x 17 (H) mm
  • Weight: 0.19 lbs. (88 g) (Including batteries)

Korg GA-40 Guitar and Bass Tuner Review 01



  • Easy reading (stands up and big display screen)
  • Responsive and accurate
  • Compact and portable


  • Background noise will interferes the tuning
  • No back-lit


buy from amazon