audio-sound @ hatena

An audio review & news blog. The volume should not exceed 80 dB is recommended. I usually adhere to the safe-listening style by WHO. Please note that my aural impressions and interpretations of measurements are also made from a safe-listening style.

(News) YANYIN MOONLIGHT EST: 2EST + 4BA + 1 Dynamic Driver Hybrid IEM




Yanyin Moonlight EST, an electrostatic + 4BA + 1DD hybrid driver IEM, is now available from Yanyin.



  • Yanyin technology first electrostatic hybrid driver structure earphone
  • 10mm new Bio-diaphragm dynamic
  • 4 Knowles independent balanced armature
  • 2 Sonion electrostatic units



  • Driver: 10mm Bio-diaphragm dynamic + 4 Knowles independent balanced armature + 2 Sonion electrostatic units
  • Technology: 4 crossover + 4 independent tubes
  • Frequency response: 5Hz-50kHz
  • Impedance: 8Ω
  • Sensitivity: 118dB
  • Cable material: 4 strands graphene wrapped with silver-plated cable
  • Cable length: 1.2m
  • Connector: 2pin 0.78mm
  • Plug: 3.5mm

The moon shines, the stars twinkle

Each piece of earphone is made by hand in reverse mold, with unique craftsmanship like moonlight embellishment, half-hidden and half-visible.  Like the moonlight under the starry sky at night with beautiful music, picturesque. 

Good tuning, good soul

MoonLight uses a complex physical frequency division combined with electronic frequency division technology, and the design of the four-band independent tube makes the sound more pure.


The phase of each unit spends a lot of time processing coordination, exhibiting an industry standard for ultra-low distortion. The sound positioning is accurate, the sound field is naturally wide, and the feeling of unplugging is excellent.

Where the moon goes, the sound goes 

MoonLight adopts new Bio-diaphragm dynamic, better sound diving, full atmosphere, better elastic performance. 


The configuration of the 4 Knowles balanced armature ensures the high and medium frequency sound is full and details are restored clearly. 


Two Sonion electrostatic units with an ultra-wide frequency response range make the ultra-high frequency smooth, warm and transparent. 

Graphene silver-plated cable 

The cable is made of 4 strands of Litz structure, graphene wrapped with silver-plated cable. The good horse is equipped with whip, so that the signal transmission cannot lose. 


The earphone is designed with detachable cable and also supports balanced plugs. The default pin is 2pin 0.78mm connectors +3.5mm single end. 

High toughness, high strength, imported medical resin 

The shell of the earphone is still made of egger medical grade resin imported from Germany. The excellent material makes the shell of the earphone have the characteristics of high toughness and high strength. This environmentally friendly material is also one of the preferred materials for high-end earphones.



YANYIN MOONLIGHT EST is available now at Penon Audio and others for $649.