Check out Black Cat bnc -> rca adapters. A bit pricey but excellent quality.
Confused about adapter for RCA to BNC
OK, I’m sure this will "engender" jokes but I still need some help. I have a digital Coax cable with BNC connectors on both ends. I’m buying a DAC that only has an RCA Coax input, so I need an adapter to, in effect, convert one end of the BNC cable into an RCA. What is this sort of adapter called, exactly? "Female BNC to Male RCA" ?
... and, can anyone recommend a brand/model, send me a link???