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Korg CM300WHBK Clip-On Contact Microphone Tuner — main product image
Korg

Korg CM300WHBK Clip-On Contact Microphone Tuner

★★★★★4.4 (475 reviews)

Clip-on piezo contact microphone that captures instrument vibrations directly for accurate tuning even in loud environments.

$19.99*
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

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Overview

The Korg CM300WHBK is a clip-on contact microphone designed to work with compatible chromatic tuners, providing musicians with a more accurate tuning experience than ambient microphones can deliver. Its high-precision piezo pickup detects vibrations directly from the instrument's surface, effectively filtering out stage noise, other instruments, and crowd sounds. This makes it especially valuable for performers who need to tune quickly and accurately during rehearsals, soundchecks, or live performances where ambient noise would confuse a standard built-in tuner microphone.

Korg has addressed common durability complaints with this generation by redesigning the cable and its junction point for improved flexibility and stress resistance. The clip mechanism opens to 30mm and features specially shaped rubber contact pads that conform to different instrument surfaces, from the bell of a trumpet to the headstock of a guitar. Connecting via a standard XLR connector, the CM300 is compatible with a range of Korg tuners and other XLR-equipped devices. At just 1.23 ounces, it clips on without adding noticeable weight or affecting the instrument's balance during play.

Key Features

Redesigned Cable Design: Durable, stress-resistant cable with improved flexibility and a redesigned junction for longer-lasting performance.

Secure Multi-Instrument Clip: Clip opens up to 1.2" (30mm) with specially shaped rubber for stable grip on brass, strings, guitars, ukuleles, and more.

High-Precision Piezo Pickup: Piezo sensor captures instrument vibrations directly, ensuring accurate tuning even in noisy environments.

Specifications

Brand
Korg
Model
CM300WHBK
Color
White/Black
Pickup Type
Piezo
Clip Opening
Up to 1.2" (30mm)
Connectivity
XLR
Connector Type
XLR
Material
Plastic, Metal
Weight
1.23 ounces
Dimensions
3.3 x 4.8 x 1.1 inches

Pros & Cons

👍 Pros

  • Piezo pickup captures instrument vibrations directly, maintaining accuracy in noisy environments
  • Redesigned cable junction reduces stress-related breakage for longer service life
  • Clip opens to 30mm with shaped rubber pads for a secure grip on varied instrument profiles
  • Lightweight at just 1.23 ounces, adding virtually no weight to your instrument

👎 Cons

  • Requires a compatible tuner with XLR input, as the microphone has no built-in tuning display
  • Plastic construction on the clip body is less rugged than all-metal alternatives
  • Cable length may limit placement flexibility depending on your tuner setup

Frequently Asked Questions

The clip opens up to 1.2 inches (30mm) and uses specially shaped rubber grips, so it works with brass instruments, string instruments, guitars, ukuleles, and other acoustic instruments.
The piezo sensor picks up vibrations directly from the instrument's body rather than capturing airborne sound, which means ambient noise from other musicians or a loud stage won't interfere with tuning accuracy.
The CM300 uses a standard XLR connector, allowing it to plug into compatible Korg tuners and other devices with XLR input.
Yes, the CM300 features a redesigned cable with improved flexibility and a reinforced junction point, specifically addressing stress-related cable failures that were common in earlier models.

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