The Morrow Audio cables are already labeled, the final end will be labeled “MA X” for analog RCA where the X is the version of cable….mine are MA4 cables. Digital cables will be “DIG X” for digital RCA cables.
Remember that Morrow cables are also directional, with the labeled end being the final destination end.
In the end it might be worth it to consider an integrated amp, that would clear up a bunch of clutter and simplify your set up…..something like a Hegel might be a good choice. Best of luck to you