I have a Silver(pure silver wire) Delta powercord I bought used here. It's plugged into my Jadis integrated(my CD player doesn't have a detachable cord). Improvement is definitely noticeable. I have read hear that it makes more difference on the source, so when I get a new player look out! If that's the case, the cord must be very good to make such a difference on my amp. But, here's a DIY. Go to homegrown audio and buy 5-9's 22 gauge silver wire w/teflon insulation for $1.80/foot(if you buy 50+ feet, $2.80/foot if you buy less than 50 feet). Buy 72 feet of this, and divide it up to braid a 6 foot powercord(figure hot, neutral, & ground). Cost will be $130. Now go out and buy REALLY good high-end plugs. For about $200, I think we'd have a worldbeater. Perhaps others can offer opinions on this.