Klark Teknik CM-1 Microphone Booster +25 dB

What it is and who it's for

The Klark Teknik CM-1 is a compact inline preamplifier that adds up to 25 dB of clean gain to dynamic or passive ribbon microphones. It draws power directly from phantom power so no external supply is required. The rugged, UK-engineered metal body is built for stage and studio reliability. Podcasters, streamers and live-sound engineers can place it right at the microphone to keep cable runs short and noise low.

Who it suits and who should look elsewhere

Ideal for anyone using low-output dynamic or passive ribbon mics who needs extra headroom without raising mixer gain into noisy territory. It works with virtually any such microphone and fits tight spaces on stands or booms. Buyers who need more than 25 dB of gain or who use condenser microphones that already require phantom power for their own circuitry should look at alternative solutions. The unit provides a single fixed boost and has no variable gain control or pad switch.

Behaviour under sustained load

Because the CM-1 is powered entirely by phantom power, its performance remains stable during long recording or broadcast sessions without battery drain or external adapter heat. The high-quality preamp circuitry maintains consistent gain and low noise even when the microphone is active for hours. Its passive, transformerless design means there are no tubes or active cooling elements to degrade over time. The road-worthy construction ensures the same transparent boost on the last take as on the first.