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Final Sonorous III Headphones


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Found it cheaper? Click here. SKU: KFAD0472
Ex VAT: £274.17
Sonorous III benefits from knowledge acquired through development of Sonorous X for similar sound quality from headphones that are lightweight and considerably lower in price.

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Condition: Brand new in original retail packaging

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Warranty length 2 Years
Colour Black
Brand Final Audio

Tech Specs

- Housing: ABS
- Driver: 50mmΦ dynamic
- Sensitivity: 105dB
- Impedance: 16Ω
- Weight: 410g
- Cord length: 1.5m

Product Description

Sonorous III combines monitor-like sound quality with a vast soundstage. Clear, transparent sound combined with a vast soundstage is generated owing to the same titanium diaphragm employed with Sonorous X. Final Audio have achieved sound quality that faithfully reproduces the source music and is pleasant to listen to.

Flagship-Level Diaphragm

The flagship model Sonorous X employs a driver unit integrated with the front plate, which results in resonance being suppressed and clear sound quality. With the same titanium diaphragm employed with Sonorous X, the Sonorous II model excels in the generation of high-frequency harmonic overtones, achieving the high-resolution sound.

Superior Fit Ear-pads

The ear-pads have an internal sound absorption section that contributes to clear 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. To achieve a superior fit where it is hard to create a space,

Final Audio employed synthetic leather, which has an equal amount of flexibility both horizontally and vertically and has 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.

BAM mechanism

A BAM (Balancing Air Movement) mechanism developed for balanced armature drivers has been employed with a dynamic driver. With BAM, the idea is to optimize the pressure balance between the front and back of the diaphragm. With Sonorous III, Final Audio has applied even more precise tuning based on knowledge obtained through the development of Sonorous VIII and Sonorous X.


BAM 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, the engineers achieved a BA type that at the same time is made for natural listening the user doesn't tire of.

Rigid ABS housing

To achieve a high level of precision with the hard ABS housing, simulations were carried out until the appropriate level of fluidity with respect to the moulding material was achieved. A textured finish that is also used with high-grade camera lenses is applied, and unnecessary vibrations are suppressed.

Titanium diaphragm

With Sonorous X, the flagship model of the Sonorous series, the integrated driver unit with the front plate suppresses resonance as well as realizing clear sound quality. The housing employs hard resin comprised of hard polycarbonate strengthened with 30% glass added to it. Resonance is suppressed and clear sound quality is achieved. Titanium has been employed for the diaphragm. This plays a role in enhancing resolution and the generation of high-frequency harmonic overtones.

Detachable cable

A metal plated monaural plug with a diameter of 3.5mm is employed for the connector on the headphones. By employing a connector with a long track record, trouble resulting from poor connection through changes over time is avoided. This is a cable with a locking mechanism that rotates 90 degrees.

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