Sorry for the "0" on length. The new value is 0.00369
ohms and not 0.25 ohms as you say. Anyway, what about my Q:
"From where do you take this information about cable thickness and massive
amount of impedance?"
Regarding Interconnects, it's another thread...
I use XLR, no Litz. The entire Pro industry use XLR, at length of 100 meters and longer, no loss! On 2m, it is perfect.