Dunu is a Chinese company established in 1994. They specialize in the production of in-ear monitors (IEMs). The Titan and DN series are very well-received. Recently, they have released their flagship product in the DK-4001. I would like to thank Dunu for the review unit of DK-4001. At the moment, the DK-4001 can be purchased from Dunu or Penon Audio.



  • Driver Configuration: 4 Balanced Armature (Knowles) + 1 13mm Beryllium Dynamic
  • Sound Pressure Level: 112dB @ 1kHz
  • Impedance: 32ohm
  • Frequency Response: 5Hz – 40khz

Unboxing & Accessories

The DK-4001 comes in a black package with a protective cover that sports the brand logo, model name, image of DK-4001, Hi-Res Audio logo, VGP 2019 award logo, Knowles logo, SpinFit logo, Comply logo and short description of the DK-4001. Inside the package, there are the DK-4001, detachable Catch-Hold® MMCX cable with interchangeable jack (3.5mm Single Ended, 2.5mm Balanced, 3.5mm Pro & 4.4mm Balanced), tips (Silicone, Customized SpinFit & Comply), carrying case, flight adapter, cleaning tool, 3.5mm to 6.3mm headphone adapter, warranty card, certification card and information guide.



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