Silver based digital cables are very interesting alternatives to the usual copper based SPDIF cables. Their wider bandwidth seems to open the soundstage a little more and offer better detail retrieval. We tried this with the Sonic Frontiers SFT-1/SFD-2 setup and it brought about a crispier sound from an otherwise smooth, warm sound that we got from our copper based SPDIF cable.
This cable was a former demo unit. Very minor signs of use.