Наушники — DUNU DN242

The DN242 is a cabled in-ear design by DUNU that packs eight drivers into each earpiece, combining two dynamic units, four balanced armatures and two micro planar transducers in a tribrid layout. The shells are produced together with HeyGears, a specialist in 3D printing, and the design carries a Nezha theme with a red faceplate framed by gold edging.

Key specs that matter

Low frequencies are split between two dynamic drivers, a 10 mm unit for the deepest octaves and an 8 mm unit for the upper bass. The midrange goes to a pair of customised Knowles balanced armatures, a second pair of custom armatures covers the treble, and two customised micro planar drivers handle the top of the band. DUNU quotes a range of 5 Hz to 40 kHz, an impedance of 35 ohm and a sensitivity of 110 dB per mW, equal to 125 dB per Vrms. THD+N is given as below 0.5% at 1 kHz. Each earpiece weighs about 6 g, and the launch price was USD 349.

Engineering and use context

With eight transducers per side, the frequency split relies on a five-way crossover that mixes physical and electronic methods. Independent acoustic ducts guide the output of the different driver groups toward the nozzle, while a precision electronic network divides the signal before it reaches them. The acoustic chamber and the ergonomic outer shell are both made from resin in a high-precision DLP 3D printing process, which allows internal channels of a shape that would be hard to machine. The detachable cable attaches to each shell through standard 0.78 mm two-pin sockets and is braided from silver-plated single-crystal copper in a Litz construction. At the source end DUNU fits its Q-Lock Mini system, which lets the owner swap the plug without changing the cable. The package also contains three collectible cards printed with Nezha artwork alongside a set of ear tips in several sizes.

Pairing

The high efficiency figure means a phone dongle or a compact portable player reaches listening level with very little of its volume range, so a quiet source is the better choice, since any hiss is easy to notice with such sensitive earphones. The two supplied plugs cover both common connection types, a 3.5 mm single-ended jack for everyday devices and a 4.4 mm balanced plug for players and desktop amplifiers that offer a balanced headphone output.

Alternatives

The DUNU DK3001 BD is another tribrid in-ear model from the brand, using a single dynamic unit plus four armatures and four micro planar units per side, rated at 26 ohm.