I had tried a Harmonic Tech Fantasy AC-10 on my BAT VK-50SE. Honestly, I cannot hear any difference from a 14 gauge stock cable.
I suggest you save the money and apply it to other component instead. But if you want to try different cables yourself, make sure you can return them if you don't like them.
I suggest you save the money and apply it to other component instead. But if you want to try different cables yourself, make sure you can return them if you don't like them.