Well, you can still go up from the A83 with a universal. As @H20Fidelity and I agree on, the Tralucent 1+2 is an incredible IEM that bests the A83. I also liked the 1964 Ears (64 Audio) U6 more than the A83. Both are universals and both are incredible sounding IEMs (albeit with different sound signatures). But the important thing to know is that to go above the A83 will cost several times more. Nevertheless, yes there are upgrades to the A83 that don't have to be CIEMs.