I would think IC to source equipment would make the most differace BUT not if all your other cables were of low quality. Then I would think any one of them.
Which cable has most impact - IC, Spkr., power?
Curious as to what people think is the most critical cable in a system, i.e. the one that has the most impact on the overall sound. Is it interconnects, speaker cables, digital, power cables? Of course there's synergy and everything matters, but which cable makes its presence known the most?