I can only report what has been true in my experience. the wires connecting the board to the 4.4mm socket are about an inch (4 conductors), the 1Z uses Kimber cable that is enameled, and the KMOD for the the 1A and 1Z uses 1960 wire. In my experience with XLR Cables and this mod, solid copper sounds better than even the most expensive enameled cables.On "skin" effect: I can see that stranded wires might have an impact over a reasonable distance where Radio Frequencies are involved (except for Litz construction) but I'm surprised that there'd be any detectable difference between solid and stranded (uninsulated strands) at audio frequencies...
Degradation of the audio signal can happen even in that little inch.
Rookie - real men go fluxless. Flux residue has a detectable impact on high* frequency content. Also, use of too much flux (i.e. more than what your resin core gives) creates shorts all over the damn place.
Guess you don't know what you're doing after all.
* gigahertz
quite the opposite. the flux sucks any excess solder back up to the tip of the solder gun, it cleans up the ends, and actually prevents shorts. A bit of alcohol will clean up any flux residue in seconds.
Take you man complex out of soldering.... or not.
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