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) DUNU Studio SA4: The 4BA model of the popular series is here!




The DUNU Studio SA4, the latest model in DUNU's Studio series of fully balanced armature in-ear monitors, is now available.


Studio SA4 is equipped with four Knowles balanced-armature drivers, two of which are used for bass, one for mids, and one for treble.



  • Sound quality adjustment by tuning switches
  • Equipped with four proven Knowles balanced armature drivers
  • Beautiful hand painted transparent faceplate
  • Balanced studio tuning
  • Interchangeable terminate plugs with Q-Lock Lite



  • Frequency response 5Hz to 40kHz (HI-RES certified)
  • Sensitivity: 110±1dB at 1 kHz
  • Impedance: 24 Ω at 1 kHz
  • Harmonic distortion: < 0.5% at 1kHz
  • Weight: 12g
  • Shell Material: Hand-painted UV acrylic resin
  • Face plate: decomposed carbon & gold leaf


Four Knowles balanced armature drivers with established reputation

The DUNU Studio SA4 is equipped with four balanced armature drivers. All are made by the well-known Knowles company, one for high frequency, one for midrange, and two for low frequency.




Sound quality adjustment by tuning switch

The DUNU Studio SA4 ear shells are equipped with a tuning switch for low-frequency adjustment. By turning this switch on, you can enjoy a deeper, thicker, more musical sound. This allows you to change the sound quality from the usual studio monitor-oriented tuning to a listening-oriented sound quality, which can be selected according to your daily music scenes, song genres, and preferences.




Balanced studio tuning

The DUNU Studio series is designed as a studio-oriented monitor model, tuned for long hours of critical listening with well-balanced and stable listening comfort across the entire frequency range. The low frequency range can be adjusted with the tuning switch, allowing the user to choose the sound style that best suits the situation.




Beautiful hand painted transparent face plate

The ear shells, sculpted from high-quality German resin, are ergonomically designed to fit comfortably, providing a consistent sound experience that does not cause strain over long periods of listening and minimizes changes in sound quality with wear.


In addition, the faceplate, the face of the product, is decorated with gold leaf and hand-painted by skilled craftsmen, one by one, to achieve an exceptional beauty, and each design is unique, making it one-of-a-kind and unmistakably yours.




Interchangeable terminate plugs with Q-Lock Lite

The DUNU features an interchangeable plug-in terminate plug on the SA4, which makes it highly compatible with all digital audio players and amplifiers. Terminate plugs 3.5mm/2.5mm/4.4mm are included.




A complete package with almost everything you need

Accessories include a carrying pouch, a wide variety of ear tips, a 6.3mm phone adapter, a cleaning brush, and everything you need to carry and comfortably use the SA4s The SA4 is an all-in-one solution for all occasions.




Price & Availability

DUNU Studio SA4 can be purchased on Aliexpress and elsewhere for $319.



DUNU Studio SA4