The HiBy R6 uses a 2.5mm balanced output, just like A&K, Onkyo, etc. You can order any of their cables with the 2.5mm plug, but the Ares II and the Eros II would definitely be the most affordable. I hesitate recommending the Ares II because the cable's inherent signature is a warm mid-bass and a lower-treble peak; both of which the FIBAE 2 already have. So, unless you want your IEM even more V-shaped, the Eros II would be my go-to. It has a transparent sound that doesn't really colour the IEM's signature in any significant way, but it does improve treble extension, which cleans up the stage and improves stability in imaging precision.
Damn you got to stop tempting me with your posts ! I'm curious to try the Eros II with my Fibae 2 hmm. Although I would like my sound to be more forward.
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