At the risk of stepping into a hornets nest of naysayers I have gotten closer to audio nirvana via power cables.
I love the sound of vinyl and keep tweaking my system to get to what I think of as a great vinyl sound.
I have the BHK 250 amp with the BHK preamp. I originally paired this with a Rega RP6 turntable, ortofon 2m black cart and a Lehman black cube phono stage. Nice sound but I just couldnt past the highs being too bright and grainy. Swaped the Lehman for a Rogue Ares phono stage, nice improvement but still a bit shrill. Dumped the Ortofon for a Benz Micro wood cart, huge improvement but still not there. I was starting to question my PS Audio equipment. Some vinyl sounded great but still some just sounded to bright and grainy.
I decided maybe it was my cables so I called the cable company and talked to one of their salesman who was adamant about starting with power cables. I was very suspect but I figured I had nothing to lose borrowing from their library. He sent me some Shunyata , Wireworld and Voodoo cables. After spending a considerable amount of time with them I went with the Voodoo.
All I can say is they are the single biggest improvement that I have made to my system. They helped bring all of my components together into one very sweet, deep, wide beautiful vinyl sound that I had been chasing.
Go figure, who would have ever thought power cables could do that. Certainly not me!