The TM-70T BK is a precision chromatic tuner and metronome combined, with both functions available simultaneously. It has a wide pitch detection range ( C1-C8 ) that makes it usable with almost any instrument, including transposing instruments (F - B? - E?), its pitch is adjustable and it can be connected to the CM-400 contact microphone (optional) for greater tuning precision. The metronome section offers a speed range from 30 to 252 BPM , with 3 types of tempo settings and 15 variations. All operations are monitored by a high-visibility display . The TM-70T is designed with low-power consumption circuitry for greater operating autonomy.

TM-70T BK Main Features

• Combo Unit: Precision chromatic tuner and metronome. Both functions can be used simultaneously


• Wide frequency detection range: C1-C8 supports a wide range of instruments


• New Display with improved visibility


• Virtual needle LCD meter with excellent sensitivity and visibility


• New transposition function that allows, in addition to the chromatic mode, to switch from F to B? and E? of transposing instruments.


• Metronome: even clearer sounding audio output


• Adjustable pitch calibration to suit various stylistic needs


• Markers indicating pure major and minor third intervals


• Sound Out and Sound Back modes ideal for ear training


• The metronome allows a speed range from 30 to 252 BPM. There are 3 types of tempo settings and 15 rhythm variations.


• Long battery life up to 250 hours


• Memory backup function and automatic shutdown


• The foldable stand also works as a stand


• Universal design with icons for every function


• Made in Japan for maximum quality control


• Connection with the CM-400 contact microphone (optional) for greater tuning precision and control.

The tuner section of the TM-70T BK

The TM-70T BK's tuner section quickly and accurately detects the pitch of wind and string instruments. The pitch is displayed on the Virtual Needle LCD Meter over a wide response range from C1 to C8. This detection range (C1=32.70Hz - C8 = 4186.01Hz) allows the TM-70T BK to be used with instruments that produce low frequencies, or have many harmonics that are often difficult to detect, and acoustic instruments such as guitars and ukuleles. The CM-400 contact microphone (sold separately) can be used to transmit the vibrations of the instrument directly to the tuner, for even more reliable tuning and, above all, independent of environmental noise. The virtual needle LCD meter uses KORG's proprietary technology to accurately detect each frequency without delay, while also allowing the performer to control the frequency fluctuation that tends to occur with long wind instrument sounds, helping to develop and improve the sound output. The new transposition function makes it easy to use the TM-70T BK with transposing instruments in a band or orchestra, where the actual note played differs from the note name written in the score; in addition to the usual C transposition, it is now possible to switch to F, B?, and E?.

The Markers

In an ensemble such as a band or orchestra, harmonies of thirds may be perceived as out of tune and can be corrected by the performer adjusting the pitch to a pure major or minor third. The TM-70T has Markers that indicate these pure major and minor thirds simply by adjusting the needle so that it coincides with these markers*. This feature is ideal not only for orchestral instruments, but also for a cappella vocal music. * When tuning to a pure major or minor third, the specific note to be adjusted depends on the musical repertoire being performed.

The Sound Out Way

The TM-70T BK 's Sound Out mode lets you tune by ear while listening to a reference tone from the internal speaker or a pair of connected headphones. The reference tone can be selected within three octaves from C3 (130.81 Hz) to C6 (1046.50 Hz), allowing you to use it with a wide variety of instruments.

The Sound Back Mode

The Sound Back mode generates the reference tone closest to the frequency you are playing, while simultaneously indicating the input pitch on the Meter. This mode allows both visual and auditory pitch control, allowing you to tune more precisely, and is also an ideal ear training exercise. * This function is available when there is a connection to the INPUT jack or the headphone jack (or both).

The Metronome

You can set the tempo change in three different ways: Pendulum Step lets you increase or decrease the tempo like in old pendulum metronomes. Full Step lets you set the tempo in single step increments in the range of 30-252, and Tap Tempo sets the tempo by simply tapping in time on the dedicated TAP button. There are 15 different preset tempos (*), including time signatures from 0-9, duplets, triplets, triplets without a middle note, quadruplets and quadruplets without a middle note. The tempo can be adjusted freely in the range of 30-252 BPM. Sophisticated rhythms such as triplets or quadruplets without a middle note are used in a wide range of styles, from classical to rock and jazz. * Use tuner and metronome at the same time, you cannot select: triplets, triplets without a middle note, quadruplets or quadruplets without a middle note

Quality Made in Japan

The TM-70T BK is made in Japan to ensure the highest possible quality control. In 1975, KORG introduced the needle meter concept that is still the base of modern tuners, and was one of the first companies to produce compact tuners. The TM-70T incorporates all of KORG's tuning technology, expertise, and decades of experience, and is a good, reliable and precise partner that can support and enhance your performance.

TM-70T BK Technical Specifications

Tuner Section

• Scale : 12 notes equal temperament


• Detection range : C1 (32.70 Hz) – C8 (4186.01 Hz) with sine wave input


• Reference signal : 3 octave range C3 (130.81 Hz) – C6 (1046.50 Hz)


• Tuning Modes : Meter Mode, Sound Out Mode, Sound Back Mode


• Calibration range (pitch adjustment) : A4=410–480 Hz (1 Hz units)


• Detection accuracy : less than +/-1 cent


• Sound accuracy : less than +/-1 cent

Metronome Section

• Tempo Speed Adjustment : Quarter Note = 30 to 252 BPM


• Tempo setting mode : pendulum step, full step, tap tempo


• Time signatures: 15 types (0–9 beats, duplets, triplets, triplets without middle note, quadruplets, quadruplets without middle notes)


• Accuracy : +/-0.3%

General Specifications

• Connectors : INPUT jack (3.5 mm monaural mini-jack), Headphone jack (3.5 mm stereo mini-phone jack)


• Speaker : dynamic (φ23mm)


• Power supply : 2 x AAA batteries (3V)

Battery life

• Tuner : Approx. 250/150/85 hours (backlight: off/soft/auto, A4 continuous input, with zinc-carbon batteries)


• Metronome : Approx. 200/130/75 hours (backlight: off/soft/auto, tempo 120, 4 beats, maximum volume, with zinc-carbon batteries)


• Dimensions (L × W × H): 107mm x 72mm x 18mm


• Weight : 79g (batteries included)


• Color : Black


• Accessories (sold separately): CM-400 Contact Microphone