My first upgraded power cable was the original Shunyata Venom (the lavender cable). I bought it because I chafed the jacket on my stock B60 power cable, it it was discounted because it was being discontinued. I figured if there’s a difference, I’ll hear it; if not, not much lost and I need a new cable anyway. I definitely heard a difference. I didn’t like it at first. It sounded too relaxed to my ears. I lived with it for a while and the sound grew on me. Swapped over a stock cable from another component and realized it was a good change. It certainly didn’t transform my system nor did it do all the mumbo-jumbo.
The Shunyata’s Diamondback Platinum went on closeout. I figured I’d try it out. I liked that one even more. Everything just sounded better, but no one particular thing really jumped out at me. Stock cable still on the DAC, I put the Venom on that after I got used to the Diamondback. Further improvement.
Actually, I bought a 3rd power cable - an Audioquest lower end one for my Apple TV gen 1 I was using as a transport. The stock cable was like a shoelace. It was about $75 or so if memory serves me correctly. It improved the sound too, which baffled me because I was using optical out (the only digital output).
None of the cables transformed my system. I could’ve easily been happy with the stock cables. If I didn’t know my system well enough I probably wouldn’t have heard much difference. But owning the system for quite a while, small differences aren’t as subtle. They were all definitely worth the money, even if I paid full price.
Do I think very expensive power cables will make a bigger and better difference? Probably not. But I haven’t tried them to be certain. And I’m not going to. I’m perfectly happy with how everything sounds. If it ain’t broke, don’t fix it. And if they do break, I’ll look into something I consider reasonably priced. Not sure exactly what reasonably priced is, but certainly no where near component upgrade price. Less than a day’s pay seems about right to me. I’ll cross that bridge when I get to it.