From my experience, many, well, most active monitors that I’ve heard or heard of someone else’s experience with (active) monitors, even an employee (some designer or acoustician…) from Genelec stated FIRMLY that their monitors haven’t changed sound signature when using either a basic power cable or a gem-like 10k$ piece of precious conductors in an exotic twist.
I guess most studio monitors are just too cheapo to have such benefit from power quality…?
Personally I’m just kinda mixed as to whether my monitors really appreciate their AQ power cabling. Maybe it’s just my overall poor mains quality that makes a bottleneck to how “well” a well designed power cable does its job…
[Edit: wasn’t meant to be a thread about vacuum]