I had a Mark Levinson long ago with a Tara Labs The One power cable hooked to it. It made a huge improvement over the JPS cable I was using with it. I wish I would have never sold that cable. I believe JPS is solid core and still love JPS with some gear. I found solid core has bigger bass and brighter highs which can be a good thing or not. Stranded power cables sound smoother and relaxed to me. Stock power cords belong in a box in the closet. My brother sent me a Pangea power cord those really are bad don't waste your money on that.