I can see that the 846 requires a lot of experimentation to finagle the best sound out of them. I'm in the beginning stages of that process.
So far I've found the mids to be a little unrefined for my tastes. Maybe it's the nature of these IEMs, or maybe I'll need to experiment with my amps and sources, but if feel that the mids are somewhat congested, a little grainy, and a bit distant.
Add to this the feeling that the imaging is all over the place. On some tracks, certain instruments do sound nicely placed off to the sides. But as I get closer to the center of the sound field, things become more congested and mushed together. It's strange, because what I'm hearing isn't firmly centered, either. Rather, it's sort of a floating sensation. As if one of the earpieces was wired out of phase in relation to the other. I'm not sure of what to make of it yet.
At this early stage, what I might say, however, is that these are not an all-around IEM. They sound great with beat heavy/beat driven music. They are quite compelling in this regard.
But so far they have fallen short of my expectations in terms of tone and texture of the midrange. They don't seem suited to more subtle, textural music that highlight tones and textures.
At least not for me yet. I may be able to get better synergy with experimentation. But I expected a more refined and all-around IEM, especially at this price.
I wish I had known just how specialized the sound of the IEMs are. I probably would have sprung for something else that was more lucid sounding.
But I'm making the best of it and will be experimenting to finagle out the best sound.