The plus sound's 8X silver gold cable provides excellent matching with earphones other than the Zeus R Custom, and the hidden potential of the device without filtration.
Leonidas and DHC Double Helix, both of which have been introduced, have heard compliant sounds, but you will not be able to compare the sensibility you feel with this cable. If I can choose only one cable, I will choose 8X silver gold without hesitation.
stevenswallWhat is your source of the "proof"? I hear obvious (and large) changes in sound signature when switching stock and upgraded cable on my Ety 4P.