CONSUMER ELECTRONICS
Earbuds, laptops, TVs and wearables live or die on the smallest part: the driver. ZEH winds, assembles and 100% sweeps every micro driver in our own plants — so the 400,000th pair sounds like the first.
Charging cases, ear tips, drivers: the whole TWS chain is a supply problem. ZEH covers the acoustic core — driver, mic and enclosure — with tooling in-house.
5–10 mm balanced and dynamic drivers at 16/32 Ω, tuned for sealed in-ear loads and ANC reference chains.
Slim 13–28 mm drivers with bosses and gaskets that survive drops and hinge-adjacent vibration.
Full-range drivers and tweeters for slim cabinets, L/R pairs matched within 1 dB.
Receiver-grade micro speakers with waterproof coatings for splash-rated devices.
TWS earbud pairs shipped globally in 2025 (industry tracker estimates)
TWS shipment growth year-on-year, Q1 2025 (Canalys)
THD ceiling expected of current-generation HiFi earbud drivers at listening levels
Buyers hear L/R imbalance long before the datasheet fails. ZEH runs automated winding and 100% end-of-line impedance and sweep screening, then bins drivers into matched pairs within ±1 dB — batch FR data ships with every carton.
A flat free-air curve means nothing in a sealed ear canal. We tune against IEC 60318-4 coupler loads and publish the in-coupler curve on request, so your DSP starts from reality.
Glued baskets debond after 50 drops. Our assemblies use structural adhesive validated against your drop/vibration protocol — not a generic glue spec.
ZEH micro drivers use LCP or PET-composite diaphragms on neodymium magnets — the same material set the big TWS brands specify — sized 5–12 mm for in-ear and 13–40 mm for panels. Impedance is tuned to your Bluetooth chipset and DSP chain, and rated power (3–5 mW class) is set so your amplifier never clips first.
Enter driver sensitivity and impedance, plug power and your source voltage — see in-ear SPL and drive voltage against typical chipset limits.
Tell us the enclosure volume, target curve and volumes. ZEH answers with a driver proposal and a test plan — samples from our own line, curves attached.
