“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 SR-003 is a 5-pin PRO bias type in-the-ear earspeaker, and can be used by connecting to a driver unit having 5-pin PRO bias output socket. Also, the inner type structure of the SR-003 enables you to enjoy excellent electrostatic sound readily without covering your ears. The SR-003 connects to STAX driver units or adapters equipped with 5-pin type PRO bias output- The Stax SR-003 is the home...