These cables seems to effect the bass to mids more so than the treble end which tilts your phone to sound warmer than they are. I should have gotten the SPC OCC version of these instead. lol. These. These cables have so much material it woundnt surprise me if they can use some actual burn in to get them sounding proper. The sound was a bit too warm for my liking out of the package but they are starting to clean up in the sound the more I am using them. AS they are these will work really well for BA based iems that need a bit of smoothing around the edges. I think these are worth the money but I can't say these are a slam dunk good deal since I got many that was actually great deals before getting these. But since I don't own any 16 core pure copper cables in my collection these cables will add to the cable box nicely. I am definitely noticing a cleaner sound the more and more I am using them so a bit of cable burn in seems to be taking place here. I have them connected to one of my Chi fi 12BA eaprhones as I am typing. These have no ear guides by the way so they form around your ears perfectly. Wish more cable companies just skipped on the ear guides. I will be letting music play through the cables for the evening. Will see how they turn out by tomorrow.