I've tried a few different power cords and interconnect cables with my sub. Every after market cable was better than stock, that's for sure. Notes are better defined, basically.
However, I did not get any huge benefit from using an expensive Kimber PowerKord 10 Gold or DH Labs Power Plus over good $50ish Belden made cable, which I'm still using.
Same benefits with the sub cable, I'm using a DH Labs Subsonic which is not too expensive and is better than the crappy free thing I was using before.
Hope this answers your question. Basically, you don't have to spend megabucks to get the benefit over stock cables. DH Labs with their Subsonic cable, and Supra, with their LoRad mains cable and Sublink interconnect, would be two manufacturers I can vouch for.
However, I did not get any huge benefit from using an expensive Kimber PowerKord 10 Gold or DH Labs Power Plus over good $50ish Belden made cable, which I'm still using.
Same benefits with the sub cable, I'm using a DH Labs Subsonic which is not too expensive and is better than the crappy free thing I was using before.
Hope this answers your question. Basically, you don't have to spend megabucks to get the benefit over stock cables. DH Labs with their Subsonic cable, and Supra, with their LoRad mains cable and Sublink interconnect, would be two manufacturers I can vouch for.