Multi-BA Studio Reference IEM (6-Driver 3-Way Crossover)

Six-balanced-armature-driver IEM with a passive 3-way crossover: two BAs for lows, two for midrange, two for highs. The reed-and-magnet armature topology delivers extremely fast transients and surgical midrange detail — the reason BA-only IEMs dominate stage-monitor use among touring musicians.

MMCX detachable cable interface. 22 Ω impedance with 112 dB/mW sensitivity makes it one of the most efficient IEMs in the database — easily driven from a phone, and likely to amplify source hiss on a high-output desktop amp without an inline attenuator.

Treble extension is detailed but slightly less airy than the tribrid hybrid IEM that adds electrostatic super-tweeters. Sub-bass below 40 Hz is engineering-intensive on pure-BA designs; expect tight, fast bass rather than visceral slam.