“Intro TL;DR: The Superlux HD381F is an IEM that pops tags with its exceptional sound quality in its cheap-looking and completely unassuming package. Before I begin, I would like to first thank George at Gearbest.com for providing a review sample of the Superlux HD381F in exchange for my honest opinion. I would like to clarify that I am neither affiliated with...” --thatBeatsguy
The phone uses an internal configuration XE4/Pro four microdrivers with balanced armature technology and an integrated three-way crossover providing a listening experience like no other, with a super comfortable and crisp sound. Specifications: Sensitivity: 118 dB / mW Frequency Response: 10 Hz -17 kHz Impedance: 25 ohms Internal configuration of speakers: 4 microdrivers balanced...