Many Sound Cards have these combination sockets
1 x S/PDIF out (1 x Optical (Toslink)/(combo with rear out))
Like this one https://www.asus.com/Sound-Cards/Xonar_DSX/
Yet I can?t seem to find any cables that would have a mono mini jack to RCA with 75 ohm cable.
I have quite a few mini jack to optical adapters often supplied with DAC?s
1 x S/PDIF out (1 x Optical (Toslink)/(combo with rear out))
Like this one https://www.asus.com/Sound-Cards/Xonar_DSX/
Yet I can?t seem to find any cables that would have a mono mini jack to RCA with 75 ohm cable.
I have quite a few mini jack to optical adapters often supplied with DAC?s