Anyway i don't get the point of you 3-5 guys who tell me that a 200€ cable is like a 20-40€ ones, and what are your bases..
Speaker cables
can change the sound very slightly. After all, you could vary impedance/inductance/capacitance anywhere in the analog signal chain and get a little variance in phase and frequency response... that's what passive crossovers do... they're just a bunch of resistors, inductors, and capacitors after all. =)
“Turns out Devantier was right — I could measure this. As you can see in the chart, the results with the two 12-ga cables were only subtly different. The biggest change was a boost of maximum +0.4 dB between 4.3 and 6.8 kHz. Is this audible? Maybe. Would you care? Probably not. To put it in perspective, that’s about 20 to 30 percent of the change I typically measure when I test a speaker with and without its grille.”
(I suspect some overpriced cable manufacturers actually take it farther than +/- 0.4dB, but that's only a suspicion)
https://thewirecutter.com/reviews/the-best-speaker-cable/
As the article says, that doesn't mean expensive cable is better. Buying expensive speaker cable to tweak your sound by half a dB here or there is insane. There are better ways to do that. Stick to pure copper and as long as you're not doing overly long runs with puny gauge wire you're fine with affordable cable from Amazon, Monoprice, or even a hacked up extension cord from Home Depot.