With 6 inputs & 4 outputs the dbx Zone PRO&134; 640 provides flexible signal routing powerful DSP processing & multiple control interfaces for Commercial Audio applications. \n\n Designed to offer superior system sonic performance & flexibility the 640/641 deliver the highest quality tools available. Even the input & outputs connectors were chosen for their standard usage & reliability. The Zone PRO products offer Euroblock connectors for balanced signals & RCA connectors for interfacing with consumer equipment often used in commercial applications; there is also a simple analog input buss that allows inputs to be sent from one unit to the next for unit & job scalability. The 640 & 641 provide every necessary processing tool from the input processing like gain control & EQ available on all inputs to highly sophisticated & specific functions such as selectable paging microphone processing including Gating De-Essing Auto Gain Control Compression & Feedback Suppression. The heart of the Zone PRO products is the Routing module that provides of course Primary Source Selection but also Source Ducking for Paging & Priority Override. The outputs also offer a wealth of processing designed for commercial applications like our patent-pending Auto Warmth&134; function that was co-developed with JBL to provide natural low frequency extension at any signal level. Each output also offers EQ Bandpass & Crossover filters Limiting & Delay for system optimization. With the Zone PRO&134; every tool is at your disposal to maximize the response of your system.\n\n Beyond processing the Zone PRO&134; products offer multiple forms of control to further extend the versatility of your system. From easy-to-use wall panel Zone Controllers for standard end-user functions like source select & volume control to advanced system control including a built-in Real Time Clock that can provide programmable system changes throughout the day or week. For system setup & monitoring the Zone PRO Designer software provides an intuitive interface & a speedy setup Wizard for configuring & editing all system parameters. \n\n The Zone PRO&134; 640 will take your Commercial Audio system to the next level with advanced processing versatility & control.\n\n Features\n\n&162; Advanced Feedback Suppression (AFS&132;&162;) \n&162; Autowarmth&134; \n&162; Auto Gain Control \n&162; Compression \n&162; Limiting \n&162; Noise Gating \n&162; Notch Filtering \n&162; Bandpass & Crossover Filters \n&162; Parametric EQ \n&162; Security Lockout \n Features Impedance Euroblock: >50k&206;&169; Balanced >25k&206;&169; Unbalanced RF Filtered; RCA: >25k&206;&169; Unbalanced RF Filtered Ohms