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.

(Chi-fi IEM Review) Open Audio Alkaid: Superior monitor earphones that convey clarity, subtlety, and detail without spilling anything.

Open Audio Alkaid




  • This review is written based on samples lent by Open Audio to give readers an honest quality review.
  • No remuneration or compensation, such as a manuscript fee, has been received for publishing this, and it is an honest evaluation based on measurement data from personal testing and personal opinion.
  • Please read the privacy policy of this website.


  • People who like analytical and delicate sound
  • People who value resolution
  • People who value weight
  • People who value sparkle
  • High frequency lovers
  • People who value appearance
  • People who like hall-like sound with a sense of depth


Overview of Open Audio Alkaid

This review will give an overview of Open Audio Alkaid. A complete review of this product can be found here.


audio-sound Score

  • Total Score: 9.2 / 10.0
  • Package: 8.0 / 10.0
  • Build quality: 8.5 / 10.0
  • Fitment: 9.0 / 10.0
  • High range: 9.5 / 10.0
  • Mid range: 9.5 / 10.0
  • Low range: 9.0 / 10.0
  • Less distortion: 7.5 / 10.0
  • Cost Performance Bonus: 10.5/10.0


  • Want to see the score ranking? Click here!


Basic Specifications
  • Cable connector: 0.78mm 2pin


Features of Open Audio Alkaid

  • 8 balanced armature hybrid configuration combining Sonion and Knowles
  • Fresh and lively sound tuning
  • Innovative new design
  • High-quality genuine cables
Sonion & Knowles balanced armature hybrid driver configuration

The OpenAudio Alkaid features an 8-driver hybrid setup with Sonion and Knowles balanced armature drivers on each side. These drivers deliver a more balanced sound, allowing for longer, fatigue-free listening. They deliver more detailed and sensitive sound.


Rich and lively sound tuning

Open Audio's flagship IEM, Alkaid, is professionally tuned and tuned to reproduce natural, lifelike sound. It delivers a highly articulate sound over a wide frequency range, with a tone that makes vocals stand out. A professional 3-way frequency crossover ensures very low distortion of the output signal.


Innovative new design

Open Audio has created a beautiful shell for Alkaid. Each unit undergoes a complex process to achieve a unique texture and elegant finish. The shape of the cavity is also adjusted based on a vast amount of earhole data to provide a comfortable and secure fit for users around the world.


High-quality stock cables

Open Audio Alkaid comes bundled with a brand new, high quality cable. This cable is an 8-conductor high-purity OCC cable. This cable optimizes sound performance and ensures an authentic experience for the user.



Package meets price standard. The attache-style case is stylish.


However, at this price point, it may be a little unsatisfactory that the cable does not have a plug replacement function.


Package contents
  • Open Audio Alkaid
  • Eartips
  • 3.5mm to 6.35mm conversion adapter
  • Cleaning cloth
  • Aluminum case


Open Audio Alkaid

Open Audio Alkaid
Open Audio Alkaid

Open Audio Alkaid

Open Audio Alkaid

Open Audio Alkaid

Open Audio Alkaid

Open Audio Alkaid


Build quality

Build quality meets price standard.


Open Audio Alkaid

Open Audio Alkaid
Open Audio Alkaid
Open Audio Alkaid
Open Audio Alkaid

Open Audio Alkaid

Open Audio Alkaid



The fit is good.


Open Audio Alkaid

Open Audio Alkaid
Open Audio Alkaid
Open Audio Alkaid


Sound quality

REW Frequency Response

Open Audio Alkaid


Sound quality description

In this review, I use the standard eartips size L and drive it with the FiiO M15.


Open Audio Alkaid has a V-shaped sound balance with emphasis on high and low frequencies.


Please see here for detailed reviews on sound quality.


Sound quality general comment
  • Original Sound Fidelity: A-
  • Recommendation: S-
  • Personal preference: S+


The Open Audio Alkaid generally meets the price point standard and has the ability to be a high-end earphone.


It has a delicate, shimmering high frequency range, a soundstage with depth and analytical sound with high resolution.


However, for the hardcore audiophile, who generally tends to focus on the purity of the sound image in the midrange, its slight lack of midrange may push the Alkaid somewhat lower from being a candidate for best companion. The overall range reproduction is also slightly lacking for a high-end product.


Open Audio Alkaid


Sound quality features

  • Sound field with a sense of depth
  • Good texture
  • Good original sound fidelity
  • Massive
  • Resolution worthy of high-end
  • Delicate
  • Sparkling
  • Analytical and high definition


  • Insufficient high-frequency extension
  • Flat-sounding midrange
  • Lacks low-frequency depth
  • Insufficient clarity


General comment

The Open Audio Alkaid is a high-end earphone with a delicate, analytical sound with high transparency across the entire frequency range. Although it suffers from a relative lack of midrange clarity, the perfection definitely meets the price point, and it delivers vivid, sparkling music with a deep soundstage.


Open Audio Alkaid

Open Audio Alkaid

Open Audio Alkaid