The "pecking" order for my small 2-channel system is....
1. Speaker Cables
2. Interconnects
3. Power Cables
If I had a large power-hungry amp, power cables might prove to be more important but my Bryston Integrated Amp doesn't seem to care what I feed it with. I do, however, replace OEM 18AWG PCs with generic UL-listed 14AWG ones because they're inexpensive and provide (in theory) better power delivery.
1. Speaker Cables
2. Interconnects
3. Power Cables
If I had a large power-hungry amp, power cables might prove to be more important but my Bryston Integrated Amp doesn't seem to care what I feed it with. I do, however, replace OEM 18AWG PCs with generic UL-listed 14AWG ones because they're inexpensive and provide (in theory) better power delivery.