Skip to main content
Play Video

Klark MIC BOOSTER CM-1 Dynamic Microphone Preamp

Q&A SKU #L77494000000000
45.0 $45.00
More ways to pay:
Loyalty Points Icon
Loyalty Points Icon
Earn 360 reward points
($3.60 in credit)
Earn 360 reward pts.
($3.60 in credit)
Inventory Msg Check Mark Inventory Msg Exclamation In Checkout Promo Inventory Msg Download Icon
In Stock & Ready to Ship
Estimated delivery 5-8 business days
  • Free Shipping
  • Lowest Price
Product Warranties Icon Product Warranties Icon

Gold Coverage Protection

Protect your gear

Chevron Right Icon

A microphone booster that provides robust, noise-free gain for dynamic mics.

The Klark Teknik MIC BOOSTER CM-1 is a single-channel preamp that gives your passive mics the boost they need. Designed to optimize dynamics and ribbons, this rugged little unit adds a clean +25dB of gain. The CM-1 maximizes headroom, letting you achieve perfect levels without cranking up the mixer gain. Its phantom power operation and compact size make on-stage or in-studio setup a breeze. Place it as close as possible to any mic, minimizing noise from long cable runs. With the CM-1, your vocals, instruments and ambiences all get the robust signal they deserve.

Boosts Signal by 25dB for Increased Headroom

The CM-1's high-quality preamp provides +25dB of ultra-clean gain for your passive mics. This increased headroom lets you achieve the ideal signal level while keeping the mixer gain lower. The result is outstanding resolution and clarity in your recordings and live sound. Dial in that "just right" level without straining the preamp or inducing noise.

Optimizes Passive Mics Like Dynamics and Ribbons

Perfect for optimizing dynamics like the Shure SM57 or SM58, the CM-1 also excels with ribbons like Royer or Beyer. These passive mics need a strong, clean signal to really shine. The CM-1 provides the ideal gain structure to capture all the richness and realism passive mics are prized for. Vocals come through smooth and present, while instruments and rooms bloom with detail.

Phantom-Powered for Simple Setup

Drawing phantom power from your mixer or interface, the CM-1 needs no external power source. Just insert it inline with your XLR mic cable and it's ready to go. The simple, clutter-free setup makes the CM-1 easy to use on stage, in your home studio or on remote recording sessions. Wherever your mics need a clean boost, the CM-1 has you covered.


  • Dynamic mic booster adds extra gain to your sound
  • High-quality preamp provides up to +25 dB of gain
  • Phantom powered with no need for external power supply
  • Works with almost any dynamic or passive ribbon microphone
  • Rugged, road-worthy construction for years of dependable use
  • Designed and engineered in the U.K.

Order the Klark Teknik CM-1 Microphone Booster today for serious musicians.


MIC BOOSTER CM-1 Dynamic Microphone Preamp Specifications:

  • Connector: 1 x XLR, balanced
  • Impedance: 7 kΩ
  • Maximum input level: -15 dBu
  • Connector: 1 x XLR, balanced
  • Impedance: 2 kΩ
  • Maximum gain: +25 dB, 10 kΩ load
  • Maximum output level: +10 dBu, 10 kΩ load
  • Frequency response: 10 Hz to 20 kHz (± 1 dB)
  • THD + N: <0.02% @ 1 kHz, 0 dBu
  • EIN noise @ +25 dB gain: >120 dB, 22 Hz-22 kHz, unweighted
  • Power requirements: 48 V phantom power
  • Dimensions: 1.5" x 1.5" x 3.3"
  • Weight: 0.55 lbs

Questions & Answers

Do you have questions about this product?

Shop with a Friend
Free Shipping
  • Free Standard Ground shipping (48 contiguous states, some overweight and Used/Vintage items excluded).
  • Orders placed before 3 p.m. ET usually ship the same business day.
Learn More
2-Year Free Warranty on Guitars

Every guitar or bass you purchase from Musician's Friend (electric or acoustic, New or Open Box) includes two years of protection from manufacturer defects.

Contact Us for Details
We're Here for You

Our Gear Advisers are available to guide you through your entire shopping experience. Call or Chat for expert advice and to hear the latest deals.

Contact Us
Proactive Advisor Support Chat