Audio Fiber Converter 1 CH Audio, RCA, SM, WDM, 20Km, FC Detail 2 CH Audio, RCA, SM, WDM, 20Km, FC Detail 4 CH Audio, RCA, SM, WDM, 20Km, FC Detail 8 CH Audio, RCA, SM, WDM, 20Km, FC Detail 16 CH Audio, RCA, SM, WDM, 20Km, FC Detail