The Clear-Com MS-704 four-channel party-line intercom system boasts superb audio quality and versatile channel access to deliver excellent communication flexibility.All front-panel controls are intuitive and easy to operate. The front-panel buttons are programmable and can be customized for a wide variety of applications that will meet the demands of any stage, studio, or field producer. Separate volume controls for every channel ensure the perfect audio mix in the headset or through the built-in speaker.Main Features:Four independent intercom channels for ultimate flexibilityMicroprocessor-controlled logic assures maximum communications powerUniversal voltage power supply for 100 – 240 VAC operation, with short-circuit protection on each channelLinking control instantly links channels together in a super party lineSeparate talk and listen buttons for each channelIndividual listen volume controls for each channelAll-talk function permits instant communications to all four channelsFour separate program inputs are electronically balancedThree IFB channels make talent cueing easyAnnounce button with relay for external pagingVisual call signaling alerts users when others want to speak to themWide-range high-output speaker for optimum clarity in all acoustic environmentsHot-mic output allows easy connection to external IFBsAdjustable mic proximity compensation reduces acoustic feedbackSuperior contoured audio ensures excellent voice intelligibility under all noise conditions, including high-noise environmentsLED buttons for talk, call, announce, link, all talk, and mic onRemote mic kill switch turns off the microphone talk circuits