GM Series Gooseneck Microphones 11/8/2017 Category: Products, Arcadia® Central Station, Headsets & Microphones, Avalon® IP Station*, Headsets & Microphones, Eclipse® HX Digital Matrix, Headsets & Microphones, Clear-Com Encore® Analog Partyline Systems, Headsets & Microphones, Headsets & Accessories, Microphones, GM Microphones Gold-plated, threaded, and locking, 3-conductor quarter-inch phone plug connector Fitted windscreen is included Uni-directional electret condenser mic Side and rear rejection of greater than 6 dB between 100 Hz and 10 kHz Available in two sizes: 9 inches and 18 inches Compatible with Encore, i-Series and ICS stations