
The EP321 MEMS is very much a Binary Acoustics in-ear monitor (IEM). Founded in 2017, after five years of producing $1,000 IEMs, the Chinese company carved their niche with the more affordable Gizaudio x Chopin ($200) and Dynaquattro ($250) IEMs. It's not that they sound similar – they don't. But they share the brand's desire to offer different, exciting sounds, whether that's a bass-heavy, U-shaped profile or a soulful neutral warmth.
With the EP321 (currently $295 over at Amazon), Binary Acoustics is going for yet another approach. This time it's an engaging, analytical sound profile, and it's a treat for the price point.