On the subject of silver wiring I am currently experimenting with .5 mm drawn silver wire in PTFE tubing for interconnects. We are talking about pure silver (.999), which can be bought from a silver/goldsmith without any problems here. The price for the wire is approx. US$ 1.25 per metre, so the wire itself is actually very cheap. PTFE/teflon tubing can be bought by the metre from most electronics suppliers and doesn't cost much. You can even use shoelaces (!) for covering the wire, if you wish. Just cut off the ends and pull out the core that's usually in there, and stick in the wire instead.
I am using two strands slightly twisted around each other. I started out using standard Bullet plugs (copper), but found that there was a fairly large difference between these and the silver Bullet Plugs.
We (some audio friends and I) have made various comparisons with other interconnects, and this "home-cooked" cable is very, very good indeed. In comparison with a US$ 2000 Jorma Design interconnect (a cable that is right up there with the Nordost Valhalla interconnect, if that's anything to you), it lags a little behind, but not far. Considering that one of these "home-cooked" interconnects with Silver Bullet Plugs cost around US$ 130 the performance is astounding. I think that the reason for the fairly large difference between the copper and silver plugs is that silver mates better to silver than to copper, because changing from copper to silver on other cables did only give a small difference.
This cable has a very good soundstage, and a very clear and detailed midrange. The top end is airy, but still has the right weight, and bass is taut and precise. There is absolutely no "silver sound" about it! And believe me, I've heard silver cables that sounded so harsh that you had to close your mouth to avoid having the enamel on your teeth fall off!
I may try using this type of wire internally in my GK-1R at some point. Since there is a fair amount of signal wiring inside the GK-1R, this might improve the sound of this great preamp even further, although I know that great care must be taken when changing things in a product that is so well-tuned as the GK-1R.
Cheers,