Recommend a SPDIF cable

You have to try several as they're very system/component dependent. That said, I've tried the Blue Jeans and never found it optimal in various RCA-RCA coax scenarios. I've also tried the SilverStar (and many other brands) and found it not quite as good as the older Stereovox offerings.

I'd recommend these: Wireworld Starlight, VH Audio Spectrum (with WBTs), Townshend DCT (hard to get outside the UK), a-rt U-byte.

If you see a ZU one on here, snap it up.

Canare of course.

Zavato, I didn't want to reveal the digital cable my Boomslang easily outperformed but it was the highly regarded Wire World Platinum Starlight; their top cable. Snake River Audio has a unique approach to the build of the Boomslang that is new and frankly better sounding than the coax type digital cable. You get a 30 day money back guarantee; try it. I think I have a pretty revealing system and I auditioned Snake River Audio cables to my Transparent Reference MM interconnects, Prana Wire Deva speaker cables and the musicality, detail and resolution this cable line presents is truly amazing at its price point. I replaced all my cabling with Snake River and presently working on replacing my PC's with SRA. Full disclosure: I loved this cable line so much I asked Jonny Wilson if I could help develop his dealer network and cover the western states, but that aside, definitely a cable to hear. Check the reviews; call Jonny direct.

Cabledyne offers silver or copper SPDIF cables in BNCs or Xhadow RCAs for a fair price. Quality is superb and a 40 day trial. http://www.cabledyne.com/rca-digital-cable.html