Nice review, Chris. I concur in every respect. I have owned over 100 IEMs and nothing else sounds like these. It is definitely a case of "what goes in comes out". Once adjusted to the unique delivery it is hard to go back to other IEMs. You can't unhear what these deliver.

@Nimweth, I was tempted to give them a 4.5, but I have to admit the minor shortcoming of soundstage, other these are up there with some of the best IEMs.

That's interesting. As you will see in my review, the soundstage, imaging and layering was very good via my Xduoo X20. Perhaps it is source dependent to some degree.