Final Audio Sonorous III Closed-Back Over-Ear Headphones



In the Final Audio Sonorous III Closed-Back Over-Ear Headphones, the ear pads play an important part in sound quality. When there is a space between the ear pad and the ear, low frequency acoustic pressure changes greatly, and this greatly influences sound quality. So as to achieve a superior fit where it is hard to create a space, we’ve employed synthetic leather, which has an equal amount of flexibility both horizontally and vertically, and have chosen a sponge with just the right amount of flexibility. Establishing apertures on the inside and the outside of the ear pads makes for clear sound quality with sealed headphones.

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SKU: FA SONO3 Categories: , Brand:
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The Final Audio Sonorous III closed-back over-ear headphones combines monitor-like sound quality with a vast sound stage.

With balanced armature driver units, iron is driven to produce sound, and as such, these drivers face a number of problems, amongst which are “proving tiring to listen to”, “having sound that is subtle and beautiful, but lacking in depth and being flat” and “lacking bass interval”. At final, we decided to focus on developing technology for the reproduction of bass tones and three-dimensional space with the full-range reproduction of a theoretically unproblematic single driver unit, rather than taking things in a multiway direction. We went back to the beginning and reviewed the performance of the balanced armature driver, focusing our attention on something we had previously overlooked ? airflow inside the housing. We developed BAM (Balancing Air Movement), a mechanism that optimizes airflow inside the housing through the creation of an aperture in the driver unit, which is usually sealed.

While achieving bass tones and deep, three-dimensional spatial representation, which proved difficult with single driver full-range reproduction, we achieved a BA type that at the same time made for natural listening the user doesn’t tire of.

Balanced armature driver unit developed by our company for optimal use as a tweeter. We’ve paid special attention to our choice of materials used in our pursuit of sound quality, utilizing a permalloy with a high level of magnetic permeability in the magnetic circuit.


  • BAM mechanism that realizes bass tones and deep three-dimensional space reproduction
  • Ear pads with an internal sound absorption section that contribute to clear sound quality
  • Titanium diaphragm driver unit is integrated into the front plate
  • Rigid ABS housing with textured finish
  • Detachable cable with locking function

In the box

  • Sonorous III Headphones
  • 1.5m cable with locking function
  • Quick start guide
Housing ABS

Titanium diaghpram, + balanced armature

Cable length



410 gram

Impedance16  Ohms
Sensitivity 105dB
MSRP $399.99