Use the tuner and metronome simultaneously!

The TM-50 – Your partner to help improve and refine your skills as a musician

The Korg TM series allows you to use the tuner and metronome simultaneously. Since this single unit is all you need for both pitch and rhythm training, it has become a favorite lesson tool for brass bands as well as many other types of musicians. The TM-50 is the latest model, featuring a two-level backlight that enhances the visibility of the LCD display. It uses a newly designed needle-style LCD for excellent response, and even greater tuning accuracy.

In a first for this series, the entry-level model provides the Sound Back function that allows the speaker to generate the reference tone that's closest to the input sound, giving you a great way to develop and refine your sense of accurate pitch. Available in a choice of two colors, black or pearl white, the TM-50 is the perfect daily practice partner that will support your development as a performer.

•The Tuner and metronome can be used simultaneously or independently; you can practice your pitch and rhythm at the same time.

•Newly designed highly responsive LCD needle-type meter.

•Wide detection range from C1 to C8.

•The Sound Out function produces a reference tone in a three-octave range from the built-in speaker.

•The Sound Back function generates the reference tone that’s closest to the input sound, while the meter indicates the pitch discrepancy between the reference and the input sound - a great function for ear training!

•Calibration supports a range of concert pitches.

•Marks indicate pure major and minor third intervals.

•A wide tempo range of 30-252 beats/minute.

•15 rhythm variations let you practice with a broad range of musical styles.

•Easy tempo settings with two types of tempo step patterns plus a tap tempo function.

•Large LCD with backlight brightness that’s adjustable over two levels for enhanced visibility.

•Even more compact and lightweight, with your choice of body color - black or pearl white.

•Newly designed stand and battery cover for enhanced usability.

•Memory Backup and Auto Power Off.

TUNER Section


12 note equal temperament

Detection Range

C1 (32.70 Hz) ~ C8 (4186 Hz), Using Sine Wave.

Reference Tone

C3 (130.81 Hz) ~ C6 (1046.50Hz), 3 Octave.

Tuning Modes

Meter Mode (AUTO), Sound Out Mode (MANUAL), Sound Back Mode (AUTO)


410 ~ 480 Hz (1 Hz steps)

Detection Accuracy

+/- 1 cent

Sound Accuracy

+/-1 cent


Tempo Range

Quarter Note = 30 to 252 BPM

Tempo Setting

3 Types:Pendulum Step, Full Step, Tap Tempo

Time Signatures

Total 15 (0 - 9 beats, duplets, triplets, triplets without the center beat, quadruplets,  quadruplets without the center beats)

Tempo Accuracy





Input (φ6.3mm, Mono-Standard Jack type), Headphones (φ3.5mm, Stereo-mini Jack type)

Internal Speaker

Dynamic Speaker (φ23 mm)

Power Supply

AAA battery (3.0 V) x 2

Battery Life

Tuner: Approximately 70 / 44 / 26 hours (Backlight: off / soft / auto, continuous A4 input, using manganese dry cell)
Metronome: Approximately 55 / 35 / 22 hours (Backlight: off / soft / auto, tempo 120, 4-beats, maximum volume, using manganese dry cell)

(W x D x H)

111 x 74 x 18 mm / 4/37 x 2.91 x 0.71 inches


106g / 3.74oz (Including battery) 

Color Variations

Black (TM-50-BK), White (TM-50-WH)


AAA battery (3.0 V) x 2 for verifying proper operation


CM-200 Contact Microphone

*Even if a sound is within the detectable pitch range, detection may be unsuccessful for instrumental sounds that contain a large number of overtones or that decay rapidly.

* All products names and specification names are trademarks or registered trademarks of their respective owners.
* Appearance and specifications of products are subject to change without notice.