CHROMATIC TUNER This set is made up of the TM-70T, which combines the functions of metronome and tuner, and the CM-400 contact microphone, which collects the vibrations of the instrument and sends them directly to the tuner. Using the tuner together with the microphone you will achieve fast and accurate tuning without interference caused by ambient noise. The CM-400 contact microphone is the ideal tool to capture and translate the sound of your instrument to the large screen of the TM-70T. The TM-60T can also be placed on a music stand, making it an ideal accessory for orchestral or band instruments.