I asked Frank Van Alstine if a 75-ohm digital cable was needed to connect from the digital out on a CD or DVD player to the digital in on a OmegaStar DAC. He said "All you need is any old shielded cable with RCA plugs on both ends. The cable impedance won't matter unless you have a long long (>20 feet) cable run".
Special digital cable needed?
I just bougth a secondhand Yamaha DSP-E800 DD/DTS/Prologic decoder with built-in amps for centre and rear speakers. So I wanted to hook up my DVD-player, using a 75-ohm cable to feed the digital input on the Yamaha. Since the shop didn't have a digital cable and I didn't want to wait to play with my new toy, I just used an old analogue cable. And it works. And it sounds pretty good too. So my question is: will replacing this cable with a 75 ohm digital cable sound better? Or can I save the money and waste it on other joys of life?