rather than buying 4 new power cords at say, $400 each, buy a power conditioner/surge protector that delivers stable voltage and current for around $1000. I'm in Australia and purchased a locally made unit, the Thor PS10 which comes with a first class power board as well that has both coax and CAT cable protection. I went down that road, thinking more of equipment protection due to a previous issue, but I am pleasantly surprised by the sonic improvement to my system in general.
Where do cables upgrades have the most impact?
Assuming all existing cables in a system are atleast mid-grade (not junk), which cables/interconnects should be upgrade first and in what order? Where should one start?