Crown CM-311A Differoid Headworn Condenser Vocal Microphone — Beltpack + Original Hard Case is a used item in excellent condition, listed on Reverb. The asking price is £205. It is offered by Eclectic Sounds through Reverb. Local pickup is available. It is in our Microphones category. Used Gear Hunter first saw this listing on 24 October 2026 and last saw it on 3 November 2026. It has been seen 13 times in our scans. Prices are converted from the seller's currency when we scan the listing, so the amount you pay may differ slightly. The seller sets shipping, and import duty or VAT may apply, so check the final cost and the item's details on Reverb before buying.

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Professional Crown CM-311A headworn condenser vocal microphone with its original beltpack electronics module and Crown-branded molded carrying case. The CM-311A is one of Crown's most respected stage vocal microphone designs, developed specifically for performers who need hands-free operation, excellent isolation, and exceptional gain before feedback. Legendary Crown Differoid technology Unlike conventional headset microphones, the CM-311A uses Crown's proprietary Differoid differential microphone technology to emphasize the performer's voice while reducing surrounding stage noise. The result is a clear, powerful, focused vocal sound with excellent rejection of nearby instruments and monitors. An outstanding choice for singing drummers, keyboardists, guitarists, theatrical performers, and energetic frontpersons. Features Professional cardioid differential condenser microphone Crown Differoid noise-canceling technology High gain before feedback Excellent stage-noise rejection 50 Hz–15 kHz frequency response Handles sound pressure levels up to 148 dB SPL Adjustable headset and boom Beltpack electronics module with microphone controls Operates from a 9V battery or 18–48V phantom power Professional XLR output Black finish Included Crown CM-311A headworn microphone Original Crown beltpack electronics module Attached microphone cable Foam windscreen Crown-branded molded hard carrying case Condition Good to Very Good cosmetic condition, with normal signs of previous use and storage. The microphone windscreen shows some age-related wear. The case has normal surface wear. Please review the photographs for the exact cosmetic condition. Functional condition: In perfect working condition. About this model The Crown CM-311A became a popular professional headset microphone for live performers because it combined hands-free convenience with vocal isolation and feedback resistance normally associated with carefully positioned handheld microphones. Its wired beltpack configuration is especially convenient for performers who do not need a wireless system.

Crown CM-311A Differoid Headworn Condenser Vocal Microphone — Beltpack + Original Hard Case

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