https://www.voscom.com/audio-over-fiber/189.html
Mic Level Balanced Audio XLR to Fiber Converter
VOSCOM Mic Level Balanced Audio XLR to Fiber Converter, VOS-2XLRC-DT/R, 2-Channel Duplex, Mic Lelvel or Line level with XLR-Combo Connector, and with 48V...
mic levelbalanced audioxlrfiberconverter