Fidue Gem 4 ※この記事はHiFiGOから許諾を頂いて翻訳したものです。著作権はHiFiGOにあります。 Fidue Gem 4 Latest 4-Balanced Armature Driver IEMs Available NowFidue Acoustics is a HiFi audio equipment brand based in China. The name Fidue might sound confusing but Each letter of FIDUE stands for F- Fidelity, I- Inspired, D- Durable, U- …