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The Crown CM-311A/SH is the industry standard headworn electret condenser microphone. The CM-311A/SH utilizes Crown's unique Differoid technology, effectively isolating desired vocals from unwanted background noise.
Differoid Noise Canceling Technology
Differoid noise canceling rejects ambient signal at a distance, improving signal-to-noise ratio.
Electronically controlled bass roll-off
48-Volt phantom powered or 9-volt battery
Lightweight Headset Design
Behind-the-ear design is completely lightweight, adjustable, and will conform to any size head.