I bought the Fortissimo 4 soundcard few days ago.
Everything is working perfectly, but SPDIF output.
My receiver (Marantz SR4600) does not recognize
any signal on the TOSLink like it used to, with my old
much inferior SBLive 5.1 card + Hoontech SPDIF bracket.
The red light is visible at the receiver's end of TOSLink cable.
But the receiver simply switches off to analog.
I've tried 44, 48, 96 sampling rates.
Do analog outputs need to be muted in order for SPDIF output
to work on this card?