RME Digital breakout cable, SPDIF BO-9652 BO9652 HDSP-9652, DIGI-9636, DIGI-9652
This is a digital spdif cable it is not an analogue audio output cable. You would need to send the out from this cable to the input of your digital input on a converter or even an amplifier that already has a coaxial RCA spdif digital input.