This is primarely about the equipments powercircuits ability to "breathe". Powercircuit starts with powercords and ends in speakers voicecoils. Can`t be overrated!
The problem has two sides; speakers and amps. First we have amps with tiny underdimensioned powercircuits struggelig to beathe through heavy passages. Then we have speakers with even more underdimensioned passive filters threathening to shortcut the poor amp.
And on top of this the poor amp is given some tiny overpriced stranded or flat "wires" as a extension of it`s allready tiny powercircuit.
Tips: Avoid complexe passive filters, avoid speakercables, go for monoblocks. Powercords w.o extensions, heavy solid-core speakercables.