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Korg CM-400 Contact Microphone for TM-70T Tuner (Black)

BH #KOCM400BK • MFR #CM400BK
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Korg CM-400 Contact Microphone for TM-70T Tuner (Black)
Key Features
  • Designed for TM-70T Tuner
  • Mounts Directly to Instrument Surface
  • Increases Tuning Accuracy
  • Works with Most Instruments
Designed to enhance the accuracy and isolation of the TM-70T handheld tuner, the black CM-400 Contact Microphone from Korg offers superior tuning performance on a variety of instruments, including wind, brass, and stringed instruments. With its universal rubber-lined instrument clip, the CM-400 delivers faster, more precise tuning.
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Korg CM-400 Overview

Designed to enhance the accuracy and isolation of the TM-70T handheld tuner, the black CM-400 Contact Microphone from Korg offers superior tuning performance on a variety of instruments, including wind, brass, and stringed instruments. With its universal rubber-lined instrument clip, the CM-400 delivers faster, more precise tuning.

The Ideal Clip-On Tuner
The CM-400 is a clip-type contact microphone using piezoelectric elements that transmit vibrations directly to the tuner by attaching the microphone to your instrument. The CM-400 enables a more accurate tuning than the microphone on the tuner itself, and allows the tuner to detect the instrument's pitch more reliably, especially when practicing with a large group or in other environments where the signal is easily affected by other sounds.
Durable, Disconnection-Free Cable
The cable, which excels in efficient sound transmission, is made of a material with a soft and flexible wire sheath. The split shape of the joint between the clip and the cable reduces the load on the wire and makes it difficult for the cable to break.
Ultrastable Clip
The maximum width of the clip is 1.2", and the inner rubber part is designed to be attached to any instrument without leaving any mark or causing any damage. It can be attached easily and securely to a variety of instruments, such as the bells on wind instrument, the heads of bowed string instruments (such as a violin), guitar, bass and ukulele heads, and more.

Korg CM-400 Specs

Key Specs
Microphone Type
Boundary
Polar Pattern
Not Specified by Manufacturer
Element Type
Piezo
Controls
No
Analog Output
1x 1/8" / 3.5 mm TS Male
Power Sources
No Power Required
Microphone
Microphone Type
Boundary
Polar Pattern
Not Specified by Manufacturer
Element Type
Piezo
Sound Field
Mono
Controls
No
Pad
No
Circuitry
Solid-State
Connectivity
Analog Output Connector
1x 1/8" / 3.5 mm TS Male
Power
Power Sources
No Power Required
Operating Voltage
Not Specified by Manufacturer
Physical
Color
Black
Mounting Thread Size
No Mount Included
Dimensions
W: 1.2" / W: 3 cm
Weight
1.2 oz / 35 g
Packaging Info
Package Weight
0.15 lb
Box Dimensions (LxWxH)
4.3 x 3.9 x 1"

Korg CM-400 Reviews

It works!

By Kristin
Rated 5 out of 5
Date: 2025-08-18

I wasn't sure if this would work with my phone tuner app, but it does - with the help of an adaptor

See any errors on this page?

could this work with an iphone tuner app?

could this work with an iphone tuner app?
Asked by: lydia
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