Korg TM-40 Review

chromatic tunerKorg TM-40 is currently on sales on Amazon US | Amazon UK | Amazon Canada!

Korg TM-40 is a combo electric tuner with both tuning and metronome function. You can use both function either independently or simultaneously. This tuner built with large LCD screen and a needle indicator for key note detection. The metronome tuner also designed with LED indicators that demonstrate pitch difference or tempo. You can use it for rhythm practicing.

This tuner is perfect for everyone. Be it for guitar / bass, trumpet, harp, violin or cello musicians, Korg TM-40 can perform incredibly well and help you to ensure your instruments are in tune.



  • Scale: 12 note equal temperament
  • Detection Range: C1 (32.70Hz) – C8 (4186.01Hz) for a sine wave
  • Reference Tone: C4 (261.63Hz) – C5 (523.25Hz) One octave or A Bb
  • Tuning Modes: Meter mode (AUTO), Sound Out mode (MANUAL)
  • Calibration Range: A4 = 410Hz – 480Hz
  • Detection Accuracy: Better than ±1 cent
  • Sound Accuracy: Better than ±1 cent
  • Tempo Range: 40 – 208 beats per minute (bpm)
  • Tempo Setting: “FULL STEP,” “PENDULUM STEP”
  • Time Signatures: 0 – 7 beats, duplets, triplets, triplets without center beat, quadruplets, quadruplets without center beats
  • Tempo Accuracy: ±0.3%
  • Modes: Beat mode, Tap mode
  • CONNECTORS: INPUT jack (1/4” mono), PHONE jack (1/8” mini)
  • SPEAKER: Dynamic speaker
  • POWER SUPPLY: 2 x AAA batteries (3V)
  • DIMENSIONS: 4.45” (W) x 3.03” (D) x 0.71” (H)
  • WEIGHT: 0.24 lbs. (including batteries)


The Good

Korg TM-40 is well built in pocket size. This means you can easily carry it along with you to anywhere at anytime. It is designed for 12 notes reference and gives you loud and clear beats. The big screen makes it very easy for referencing and user friendly. Besides, the price is cheap too!

The Bad

Although Korg TM-40 is professional design, it is sometimes a little too sensitive to ambient noise. The accuracy is fair enough but not great if your TV is on or at a noisy environment.

In overall, Korg TM-40 is a decent tuner with very reasonable price. This tuner is relatively inexpensive, small, slim and light weight. Korg is a well known brand and this TM-40 digital tuner is definitely value for money.



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