I made up a DIY pair of power cords using Romex solid core wire, and the stock Quad IEC and male receptacle when I had a pair of Quad 63 back in 1988.The stock cords in my mind were much too thin.
I thought they were an improvement, and so did the gentleman who bought my Quads a few years later.
He listened to the stock cords first then asked if he could hear the speakers with the DIY that were on the floor.
He then asked me how much extra for the DIY cables.
I guess he could hear the difference as well.
I used aftermarket power cords on my CLS speakers.
On these I used the Foundation Research LC2, that have filters.
Stats can be RFI,EMI magnets.
I thought they were an improvement, and so did the gentleman who bought my Quads a few years later.
He listened to the stock cords first then asked if he could hear the speakers with the DIY that were on the floor.
He then asked me how much extra for the DIY cables.
I guess he could hear the difference as well.
I used aftermarket power cords on my CLS speakers.
On these I used the Foundation Research LC2, that have filters.
Stats can be RFI,EMI magnets.