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DC resistance is not "impedance", but the two are quite related.
Cheers


Yea, sorry, I did not address "impedance." Usually I have problems with resistances (open connections) in wiring rather than impedance. Dealing with audio frequencies my ears can not detect impendence differences. I find it really hard to believe that anyone could hear the difference between crimped and soldered wires. But maybe they can. If anything the length of the wire and it’s location to other wires plays a larger role.

If we are taking radio frequencies impendence is definitely be a factor and can do strange things. Even the epoxy in the circuit boards can play a part. But at audio frequencies I am skeptical.