I don't think anyone is claiming that cables and interconnects won't have an effect. It's a question of cheap vs expensive and there being no audible difference.
Obviously if you had half a mile of single strand copper wire, it's not going to perform the same as half a mile of wire that's 6 inches thick.
Providing the wire is thick enough for the job, you will NOT hear a difference. And thick wire doesn't mean it has to be expensive.
ROFL where did cheap vs expensive ever get mentioned?
I certainly never mentioned it.
Like I said yesterday when you started trying to pick holes in my argument, the original point made was that the OP should try and get some speaker cable chucked in for free when he bought his amp, rather than using (to quote your words) "wire ripped out of the back of a dishwasher".
Make whatever claims you like, what I told him was sound advice.
LOL