@StumpyTheMutt @bloor the real thing to ask is ok, what does the pro audio industry use?
expensive DSP processors, running very expensive amplifiers, running expensive speakers, connected with whatever cheap two core copper wire is available, in higher gauge only if you’re doing long runs (common) and/or subwoofer (and I don’t mean your lounge room sub. I mean D&B SL-Subs with 3kW triple 21” drivers). And even then, I’m talking maybe 4mm2, it’s not that much.