4 CHANNEL FORWARD XLR BALANCED AUDIO TO FIBRE OPTICAL CONVERTER – SUPPORTS 1 TO 32 CHANNELS OF BALANCED AUDIO FORWARD BIDIRECTIONAL TRANSMISSION. BROADCAST STANDARD ANALOG BALANCED AUDIO. USING FPGA, DIGITAL CODING/DECODING AND CLOCK RECOVERY TECHNOLOGY, HIGH INTEGRATION AND HIGH STABILITY. AUDIO INTERFACE IS XLR CARNON HEAD BALANCE INTERFACE HIGH DYNAMIC RANGE OF 100DB. AUTOMATIC HIGH-PASS FILTERING. ISOLATION OF DC OFFSET. AUDIO INTERFACE IS IN LEVEL 3 LIGHTNING PROTECTION, UP TO IEC1000-4-5 (8/20US) DIFFERENTIAL MODE: 6KV. SINGLE AND MULTI-MODE COMPATIBLE. MULTI-MODE TRANSMISSION DISTANCE 20KM, SUPPORTING CUSTOMIZED TRANSMISSION DISTANCE OF UP TO 100KM. PLUG AND PLAY, NO SETUP REQUIRED.