Phantom vs SE5U
Phantom both sounds horrible and exceptionally good at the same time. The first time I heard Phantom was in Socal Canjam. It was universal Phantom, it sounds bad. It's very veiled and muffled, I mean CA Andromeda sounds better. But then I thought Phantom is the culmination of the shootout, so it should not be that bad. Probably it was the condition of the meet, noisy etc and against my own better judgement, I ordered ciem Phantom. Long story short, I think universal Phantom suffered from wrong tips, noisy environment and iem not covering the whole ear.
Ciem Phantom in my opinion is better than ciem SE5U. For one, Phantom musical range sounds complete. If there are subbass in your music, you would "feel the rattles. Its not strong but you'll definitely feel it. SE5U is better in subbass, it rattles your skull type of bass(depending on cable).
Mids, Phantom is warm and sounds well with male as well as female vocals. It reminds me of Prelude, Prelude has amazing male vocals but horrible with females since its very warm. SE5U feels cold in comparison; it should be extremely neutral. Phantom can be considered emotional iem and would play well with bright dap like SP1000, Paw Gold and even WM1A or 1Z modded.
Phantom treble is quite amazing, its bright, high can reach really high for both males and females. I never heard Zeus XR, but I would imagine XR treble would be slightly better than Phantom. SE5U has no treble; I mean its there but you can't really hear it until its there.
Phantom ciem as a whole feels complete; nothing is lacking. It is perfect with Ares cable that comes with it. It is very musical, dynamic depending on your dap, very revealing, high resolution and clarity. Good soundstage. It is just satisfying. I can understand why some would consider this end game iem if there is such thing. And the amazing thing, it works well with lower bitrate, heck 70% of my music is320 bit mp3 with direct source on modded 1Z and I am happy with them. There is no need for me to meddle with eq at all. The timbre is spot on. Everything sounds as they should be, vocals, music instruments etc.
The only complain I have regarding Phantom ciem is the shells feel too thin, aka fragile. I don't think it is fragile as in it will break if it falls on the floor but stepping on them probably means game over.
Other than this, Phantom ciem is fullfilling and satisfying. I can use Phantom ciem for my everyday use but not SE5U. In my opinion Phantom probably has surpassed SE5U in sound quality.