So, I am using the S/PDIF output on an old x-fi for the first time. I am using an old 3.5 mm to dual RCA, with just one of the RCA ends plugged into my amps coax-digital audio in. It sounds great. Is there any reason in the world to get an actual "digital" 3.5mm to single RCA cable. I am guessing...um, no. 1's and 0's right? No quality difference as long as the music plays..?? Could someone slap me in the face and verify my thinking before I do something silly.