I've been experimenting with power cords and interconnect cables lately. Several manufacturers told me the most impact will "usually " be found by upgrading the power cords at the source and using the best interconnect at the source.
Bel canto monoblocks and power cables
For those, like me, who believe power cables make a difference: anyone with experience with bel canto amps and power cables. I use Nordost Vishnu with all of my source equipment and hear significant improvement. With my BC ref 500m monoblocks, which I love and which sound so good, power cable swaps don’t seem to make a difference. I’ve tried Nordost and Acoustic Zen Tsunamis. They don’t degrade the sound but there doesn’t seem to be much benefit either. Anyone?