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) BQEYZ Topaz: Piezoelectric Ceramic Driver & 13mm LCP Diaphragm Dynamic Driver Hybrid In Ear Monitor




The latest piezo driver-equipped IEMs, BQEYZ Topaz, are now available.



  • 2nd Gen 9-layers Piezoelectric Ceramic Driver
  • 13mm Liquid Crystal Polymer Diaphragm
  • Dual Cavity&Broad Soundstage
  • 5-Axis Anodized Aluminum Faceplate, Resin Shell
  • Detachable 4-Core OCC Silver-plated Cable



  • Driver configuration: 13mm dynamic driver+ 9 layers of piezoelectric ceramic driver
  • Impedance: 32ohm
  • Sensitivity: 108dB
  • Frequency range: 5-40KHz
  • Cable length: 1.2m
  • Plug type: 3.5mm/2.5mm/4.4mm
  • What’s in the Package:
    • Earphones
    • Cable
    • Storage bag
    • Cleaning brush
    • Silicone eartips


2nd Gen 9-layers Piezoelectric Ceramic Driver

The BQEYZ earphones have been designed with the second generation high-quality patented Piezoelectric Ceramic Driver. Nine layers of Piezoelectric Ceramic driver can greatly reduce the sharpness in high frequency, improve the performance while working with dynamic driver and enhance the integrity of sound. It is built to offer a reliable and precision listening experience.


13mm Liquid Crystal Polymer Diaphragm

A 13mm LCP diaphragm dynamic driver delivers detailed and balanced audio reproduction. Lightweight but rigid, the LCP diaphragm is able to restore high density and provide a rich and smooth sound performance. It presents exceptional frequency response without compromising on detail.




Dual Cavity&Broad Soundstage

Topaz innovatively added another cavity behind the traditional dynamic driver to create a dual cavity structure with which the vocal is more airy and thick. Meanwhile the improved circuit makes its easy to drive, so it can deliver a more outstanding performance at any device.


5-Axis Anodized Aluminum Faceplate, Resin Shell

The BQEYZ Topaz earphone is a unique blend of technical innovation and superior craftsmanship. The faceplate is made of 5-axis anodized aluminum, which provides excellent toughness and anti-corrosion properties. The sturdy design coupled with high quality material ensures it lasts long time to provide you with a worry free listening experience. Made from highest grade resin, the shell is durable enough to withstand daily wear and tear.




Detachable 4-Core OCC Silver-plated Cable

Exclusive to BQEYZ, this earphone lets you enjoy the top-notch sound quality with it’s detachable 4-Core OCC silver-plated cable. The braided cable is made of 7*7 0.06mm litz wire, 196 in total. It provides crisp and clear audio output, deep bass and flexibility. Detachable cable is easy to change into any other upgraded cable.


Price & Availability

BQEYZ Topaz is now available at linsoul and others.