I've had the GA0's for over a year now and I'm quite pleased with them. To me, they give you the best attibutes of copper and silver and none of the downsides. Nice detail and extension at the extremes without any glare or etching, and nice mid bloom and bass without any darkness or flab. Previously used Audience AU24, Grover UR's (?)some Kimber PBJ's and Nordost Red Dawn. They aren't the easiest cable to route, I found them pretty stiff and they are completely inflexible for probably the first six or seven inches after the rca due to their makeup so you need some room behind your equip.
