Hi. Here we tried a normal 4 mm2 x3 (neutral, hot and Earth) ofc copperwire from the main fuse and 15 mtr to the system, works well. Main fuse is 16 A 250v
Them we took the same wire and added 2 more runs of the same cable = 3x4mm2 = 12 mm2, nothing else changed and it was way better.
Bigger more calm soundstage and more dynamic especial in the bas.
why? No idear but maybee the transients in the Music demands much more current
in Pico second or the 12mm2 actually works as instans powerstore but it works.
regards