Apple In-Ears (dual-BA)
That's what it sounds like with deep insertion: smooth and warm, being somewhat more on the bassier but smooth and non-overdone side.
With shallow insertion (but a still good seal), its treble suddenly becomes somewhat peaky and bright.
For the money, the value is pretty good (two BA drivers per side with really good midrange and treble details), nonetheless the sound is not as cohesive and natural as with some single-BA in-ears.
Nonetheless, if you can get along with the typical Apple cable, you get a really really solid dual-BA in-ear for less than $100.