I'm using the Satori shotgun bi-wire and would classify them as decidedly neutral, but they seem to pass more of the musical signal than other cables I've heard--that's the best way I can describe it. If you're looking to use speaker cables to tune your system look elsewhere. They are a very low capacitance design and will work well with virtually any type of electronics. Obviously you'll have to try them in your system to see how they work for you, but I'd consider them one of the best bargains in cables and you should definitely try'em. Also, unless you've got 3-way speakers or more I'd suggest using a single run with jumpers--it'll work better and save you some cash. Best of luck.
Tim
Tim