The WDC-427 from Hosa is a four output, internal reference clock at an attractive price. Four individually buffered 75 Ω and TTL level outputs are available on BNC connectors.
The unit outputs Wordclock at 44.1, 48, 88.2 and 96kHz sample rates and supports both 16 and 24-bit resolution. An LED illuminates when clock output is present.