New EC-2018XTR Rf Limited power Echo Cb Ham Radio Microphone 4 pin The RF Limited EC-2018-XTR is an audio enhancing power microphone for radio transceivers. The EC-2018-XTR is the latest digital echo microphone for CB and other two-way radios. The Xtreme 2018 takes CB radio to the extreme with new features like Endless Echo, Double Talker and Noise Reducer. Surprise everyone on the airwaves with a host of different voice effects with this digital echo mic Features include echo, stadium effect, voice repeat and robotic voice Create voice effects without installing radio modifications, Effect controls are conveniently located on microphone casing, Talk-back feature lets you monitor your own transmissions, Adjust controls while transmitting to create wild, "whammy" effects Tough, Impact Resistant Case, Pre-Wired for 4 Pin CB and Amateur Radios Microphone Element: ECM Type, Microphone Sensitivity: -25dB @ 1kHz, Frequency Response: 150 - 3,000 Hz, Echo Frequency Response: 200 - 3,000 Hz