Originally Posted by arnyk
Interstand conduction distortion is a myth because there are no significant potential differences as you go down the wire. Skin effect doesn't cause any changes either because skin effect does not vary with tightly bundled strands as compared to solid wire because it is based on the magnetic field that envelops the whole conductor.
Actually, for the skin effect (and proximity effect as well) to occur, there has to be conduction between the strands. Skinning of a wire is dependent on the wire internal conductance forming toroidal current loops in response to the time varying magnetic field of the transport current, and that is dependent only on the magnetic field within the conductor, but not outside of it. Proximity effect depends on the external magnetic field of the opposing conductor. If the interstrand conduction is low or removed (aka Litz), there will be reduced skin effect.
Level of effect is a different story. The absolute maximum inductive difference with solid vs litz is 15 nH per foot. For a wire pair running 180 to 200 nH per foot, pretty small change.
Resistance changes... very small as well.
There will be pretty much no change in amplitude or distortion at the load end as a consequence of these effects. The most that could happen is a soundstage modification caused by mismatched source, line, and load and T-line effects as a consequence. And that is a seriously difficult thing to design a DBT around.