My quest to get what i think to be the best possible sound quality out of the Wadia ended up indeed to be the cable connection between itself and my DAC, it is sensitive in this regard. I learned a great deal about digital cables along my way and why they sound different, not enough space here to get into that, but bottom line I found my invisible cable! This cable blew away all others I tried some insanely $$. The cable I suggest you try for $25 is the latest Have/Canare GEPCO VSD2001 high definition 75ohm serial digital coax terminated with Canare's latest crimped, no solder, 75ohm RCA terminations. The cable is all business and nothing else, just a wire and terminations, they don't even add a braid over the cable which would make it more attractive, but so be it. Give it a try if you can handle $25 and be prepared to be blown away! Not only is this cable a champion on the test bench as it is designed primarily for the transmission of digital data, it killed all of the other cables in sound quality I tried and I tried many. Lastly, I think even though I finally achieved the best out of my set-up, I don't think I would recommend the Wadia, overpriced and I have heard trumped by other companies offerings, perhaps Wadia was in too bit of a hurry bringing the 171i to market?