KZ ZS10 PRO 4BA+1DD Hybrid In-Ear Earphones — Metal Hi‑Fi IEMs, Sport-Friendly Noise-Isolating Headset (KZ ZES ZEXPRO AS16 PRO DQ6S)

Five-driver hybrid audio architecture: each earcup houses 4 balanced armature drivers plus 1 dynamic driver for full-range reproduction. The configuration uses two 30095 BA drivers for treble, two 50060 BA drivers for mids and a 10mm second-generation Tesla double magnetic dynamic driver to produce robust, detailed bass. Measured frequency response spans 7Hz to 40kHz, providing punchy lows, clear vocals and bright, extended highs. Dual-layer frequency division: a dedicated PCB frequency-dividing board works together with an acoustic-structure physical crossover to allocate frequencies precisely between drivers. This combined approach smooths transitions across bands, reduces distortion and preserves fine detail—suitable for Hi‑Fi listening, stage monitoring and critical audio work. Premium metal + resin build: the faceplate is crafted from 304 stainless steel for corrosion resistance and a scratch-resistant finish, while an imported resin cavity keeps each earphone lightweight (7.8g per earbud) and comfortable for prolonged wear. Ergonomic fit and passive noise isolation: shaped using large-cochlea data for a secure, sport-friendly seal that stays in place during activity. The form provides up to 26dB of passive noise isolation to block ambient noise during commutes or workouts. Detachable, upgradeable cable: supplied 0.75mm 2-pin cable features a protective limit-slot design to prevent pin breakage and extend connector life. The lead is made from 6N oxygen-free copper (OFC) with gold-plated connectors for low-loss signal transfer, and can be swapped for replacement or upgrade options (including mic-equipped cables).