Audience AU24SE plus Cardas Golden Reference?

Audience AU24 SE are so open and smooth with a black background allowing inner detail to be revealed. They will play well with your system.
Again, try The Cable Company.

"Does Audience AU24 SE play well with Cardas Golden Reference? My system is all tube and all CGR. I need longer speaker cables and am considering AU24 SE instead of CGR."

Not applicable. Unless, of course, you are linking the 2 cables together to get the length you need. (Some people actually do that.) Cable Company has the Audience to lend out. I would definitely give it a try. I can only guess, but I suspect you would get better results than with the Kimber.