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) Astrotec AM850 MK2:Wired LCP Diaphragm In-Ear Monitor with Tuning Nozzles

Astrotec AM850 MK2

Astrotec AM850 MK2


Astrotec introduces the Astrotec AM850 MK2, an IEM with a high-quality LCP diaphragm from Astrotec.



  • High strength Aircraft grade Aluminum alloy
  • astrotec Metal Design
  • Different Tuning Effects for Options
  • 5-Axis CNC Cutting OFC One-Step Formed Chamber
  • Silver-plated Cable
  • Japan LCP diaphragm(Cast Solution)
  • Customized Earphones Leather Case
  • Interchangeable Nozzles
  • MMCX Socket Support




  • Model Name: AM850 MK2
  • Input: 1 mW
  • Impedance: 32Ω
  • Sensitivity: 106dB/1mw(S.P.L at 1KHz)
  • Cable: High purity OFC cable 1.2m+5cm
  • Туре: In-Ear Monitors
  • Max Input: 3 mW
  • Frequency Response: 5Hz-35KHz
  • Plug: MMCX socket + 3.5mm stereo plug


Equipped with Japan 2nd Gen LCP Diaphragm 

Solve the original sound connection problem, also improve the sound performance, and lifespan. It can effectively suppress the segmentation vibration, thereby reducing noise and accurately restoring the sound. 



Optimized Magnetic Circuit System 

Redesign the magnetic circuit, optimize the magnetic circuit system and coercivity to make the driver have better heat resistance and more durable. 



SQUAMA Damper Balance System 

The special high-density pattern etched inside the cavity is our creative design, so as to reduce the secondary refraction of the sound in the rear cavity, thereby effectively reducing the resonance, making the voice more mellow and the soundstage more natural and wide.



Innovative Special Resonant Cavity Design 

Effectively eliminate the resonance interference that affects the treble performance of earphones. More comprehensive and authentic restoration of music. 



Interchangeable Nozzles Design 

Including different shapes(circle/hexagon/blossom), for various sound performance styles. 



MMCX Socket Supported Multi strands, High purity OFC Cable 

Effectively reduce the loss in audio AC signal transmission. High-fidelity transmission, restoring the sound quality. 



Price & Availavility

The Astrotec AM850 MK2 is now available at HiFiGO and others for $169.


Astrotec AM850 MK2

Astrotec AM850 MK2

Astrotec AM850 MK2