I have a Sony HT-DDW840 stereo system. There are two digital connections allowed on the back of the receiver. One is for an optical digital cable, which is labeled "Video 2 In". The other is for a ...
RCA is left/right stereo only. The optical cable, assuming your stereo/sound card can handle it, is how you get Dolby Digital from your PS2. So, it's going to sound better because (among other reasons ...