I would like to know how you find 3dd vs se846.
I am now a 846 and hd600 owner and i do love the sound signature of hd600 more while still loving my 846. I demoed the miracle and merlin, they are surely better in other aspects in the 846 but the bass and mid are really great on the 846. The bass is just lacking in the miracle, and the mid are just too reccessed in both miracle and merlin, i expect at least as forward as the hd600, which i find its positioning is the most appropriate.
TBH, I think the demo of 3DD they had at the shop was defective. There is no way that a good iem will sound that mediocre. It has bloated bass, harsh treble, and random dips and peaks here and there. This is when compared with UERM I had. I thought there was something wrong with my gear, but everything sounded fine on UERM. IDK. This is just based on 5min demo. SE846, on the other hand, had satisfying bass and rich mids, which I love. To me, 3DD has slightly better clarity, but much more mediocre tuning.