DUNU EST 112 Hybrid In-Ear Earphones


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  • Beryllium & electrostatic four driver triple hybrid earphones
    EST 112 continues a rich history in hybrid in-ear designs for DUNU since 2013.

    An all-new, compact shell package
    Machined from lightweight aluminium alloy, finished with a scratch-resistant gunmetal anodise, and capped with elegant stainless steel faceplates.

    Ergonomically shaped, with a generous fit kit
    With proven ergonomics extrapolated from the DK and Studio series, the EST 112 is designed for all-day comfort. A wide array of included ear tips and a soft, lightweight cable allow for the user to listen anywhere.

    Building on the fundamentals of the DK series
    10 Ohm / 110 dB SPL / <0.3% THD at 1kHz. We augmented the excellent pedigree of the DK hybrid models with a new form factor and transducer type.

    Our first foray into Sonion electrostatic speakers
    The EST dual driver gives off a delicate, inimitable treble sheen not replicable with balanced armatures.

    DUNU's third generation 13.5mm woofer
    A revised diaphragm topology allows for a 9% greater effective sound reproduction area. Combined with refinements to beryllium deposition, diaphragmatic mass is now 13% lighter than that of the previous generation.

    The deposited proprietary dual-sided beryllium coating is thicker, with a finer, more regular grain pattern than ever before. Bass and lower midrange frequencies maintain their palpable texture and separation with improved distortion characteristics. A revised motor structure carries a 20% improvement in magnetic flux density at the coils.

    Proprietary Air Control Impedance System (ACIS)
    Leveraging precise control over back-volume air flow, we use a precision-machined spiral pathway to control the load on the speaker, minimising rear standing waves and reinforcing sub-bass frequencies.

  • • Knowles ED (Custom) Balanced Armature Mid-High Tweeter
    • Sonion EST65DA01 Electrostatic Supertweeters
    • 13.5mm Dynamic Driver with Dual-Sided Beryllium Coating
    • Bias Voltage Transformer for EST drivers
    • 5-Axis CNC milled Aluminium Alloy Shell
    • Impedance system reinforcing sub-bass

  • General

    Product Model

    EST 112

    Frequency Response

    5 Hz - 40 kHz (HI-RES Certified)


    10Ω at 1 kHz


    110± 1 dB at 1 kHz

    Total Harmonic Distortion < 0.3 % @ 1 kHz
    Net Weight 15 g
    Driver Module
    Dynamic Driver 3rd Gen 13.5 mm Driver with Dual-Sided Beryllium Coating
    Balanced Armature Driver Custom Knowles BA tweeter
    Electret Electrostatic Drivers 2 x Sonion Dual EST supertweeter
    Included Cable
    Length 1.2 ± 0.1 m
    Material 4-Core, High-Purity Monocrystalline Silver-Plated Cable (DUW-02S)
    Cable Connector Patented Catch-Hold MMCX Connector
    Plug Connector Patented DUNU Quick-Switch Modular Plug System
    Included Plug Terminations 4.4 mm TRRRS Balanced
    3.5 mm TRS Single-Ended
    2.5 mm TRRS Balanced