RCA splitters arrived today! The splitters I’m used to seeing are super-cheap, but I figured maybe I shouldn’t cheap out /quite/ so much with these. Anyway, they do the job and my Quicksilver and RNHP both sound great!
Also, I was getting a bit annoyed with my current headphone cables, so I picked up some ZMF Lektrik cables to try out on my Clear and Eikon: