You want amazing deep and powerful bass that goes below the limits or human hearing with bass you can feel, backed up with nice midrange and balanced treble? Look no further than the smaller brother to the Empire Ears Legend X, The Bravado! Amazing IEM for the asking price.
Interesting, I'm surprised these also haven't been discussed more. They got a very strong rec from BGGAR, he said they were 90% of the way to Legend X. Same price as R1Z too ($600). Could these be endgame basshead level sub-$1k? How does the bass compare to some of the other top recs in here?