Check out the thread at this site titled "Why do digital cables sound different." It was posted on 12-15-00. There is debate (as you'll soon see...) as to whether digital cables make any difference at all. I'm of the opinion that, barring impedance issues, digital cables (coaxial or optical) make absolutely no difference in the perceived quality of the sound. The reason? The signal in a digital bitstream consists of 1's and 0's. I've not been satisfied by any explanation I've read as to how you can "color" a digital bitstream. You can subtract from it (not all of the info gets through), but aside from that you can't taint it in any way. An analog signal is a different story, but the signal isn't converted to analog until it is in the processor and downstream of the digital cable. My advise would be to take the optical cable back and trade it in for an inexpensive coaxial cable. You'll save yourself some money in the process (coaxial cables will run you less than optical cables). My high-end digital cable (Harmonic Technology Platinum-Link) made no improvements that I can detect from the dirt-cheap cable I was using before. In anticipation of challenges to my claims, I'll add that I have a fairly high-end sound system, and I know how to use Q-tips. Good luck.
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