I agree with Cmalak, I'm also running Nordost Heimdall Series 1 with no edginess. So it may just require a longer break in, or the cables you replaced them with were warmer sounding.
nordost heimdall speaker cable
I bought this cable a week ago and have been playing it non stop. It has about 170-175 hours on it. it has settled down a little but I find the cymbals have a slight edge to them. How long will it take to take the edge off or is it a characteristic of this cable? Thanks.