I tested the THIEAUDIO Hype 4 extensively (well over 100 hours) and it’s a more refined, more complete version of what I loved about Hype 2. You get boosted sub-bass that stays clean, a flat but detailed midrange, and a treble that finally adds the air, energy, and micro-detail without turning harsh.
Pros
+Rich, punchy bass with strong sub-bass authority and good control
+Clear, detailed midrange with good note definition and body
+Airy, well-extended treble with improved micro-detail and no harshness in my testing