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.

KZ Ling Long: 1 DD Open-back HiFi In-Ear Earphones

KZ Ling Long

KZ Ling Long


KZ has released the KZ Ling Long, a drum-type in-ear monitor.



  • Small size hides incredible energy
  • Delicate and compact industrial style
  • Professional open-back cavity acoustic design for wider sound field
  • OFC silver-plated cable



  • Product Name: KZ Ling Long In-Ear Earphone
  • Impedance: 25±3Ω
  • Earphone Sensitivity: 103±3dB/mW
  • Frequency Range: 20-40000Hz
  • Connector Type: 0.75mm 2Pin
  • Plug Type: 3.5mm Straight Plug
  • Whether with mic: Optional
  • Cable: OFC Oxygen-free copper cable


Small size hides incredible energy 

Equipped with XUN-6 external magnetic dynamic unit which bring crisp and dynamic sound qualityCompared with the conventional-size dynamic unit, the micro-dynamic unit has an inherent structural advantage in high-frequency performance. It is easier for the micro-dynamic unit to show the UHF details vividly.


Delicate and compact industrial style

Like its name, KZ Ling Long adopts a minimalist aesthetic design, and the earphone chamber is made of pure aluminum alloy. Its net weight is only 18g, and it can be worn in various ways. The small and light shape also effectively reduces the pain of wearing in-ear earphones, and smaller sizes can be more deeply inserted into the ear canal. The high-frequency attenuation is negligible when the nozzle is closer to the eardrum.


Professional open-back cavity acoustic design for wider sound field

The precise cavity structure can control the airflow to enhance the dynamic performance of low frequency. At the same time, it can also make the voice sweet and warm, retain more details of the instrument, and form a clean and balanced sound.


KZ Ling Long


The traditional structure:

The traditional pressure relief structure adjusts the chamber's internal pressure through the pressure relief hole to avoid damaging the diaphragm when the chamber's internal pressure is too high, and it helps weaken some low-frequency output. Still, this practice will distort the overall sound quality.


Open-back design:

On KZ Ling Long, we optimized the new magnetic circuit structure on the XUN-6 unit. Also, we adopted an open-back chamber design, which significantly increased the air flux and flow rate, making the hearing more transparent and natural. 



KZ Ling Long


OFC silver-plated cable

KZ Ling Long is equipped with high-purity oxygen-free copper flat cable, which has high signal transmission efficiency to ensure good sound quality.


KZ Ling Long






KZ Ling Long is available now for $16.


KZ Ling Long

KZ Ling Long
KZ Ling Long