Final Audio Sonorous X Closed Back Headphone

  • The prestige model of the SONOROUS series, SONOROUS X eliminates compromise.

    We think you will be surprised not only by the clarity and vividness, but also by the sense of realism imbued in the sound produced by these headphones, something that hasn't been experienced in headphones until now. The 50 mm diameter driver unit with titanium diaphragm is integrated with the front plate and has been machined from pure aluminum. The principal parts are composed of machined aluminum and stainless steel. It was necessary to create the housing from a rigid metal so as to achieve the sense of realism.

    This is a resolute prestige model, the zenith of Final's SONOROUS series.

    A BAM (Balancing Air Movement) mechanism that delivers bass tones and deep, three-dimensional spatial reproduction

    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. To thoroughly follow through with this idea, SONOROUS X is sealed so that no air leaks from inside the housing.

    Integrated machined aluminum front plate and housing + titanium diaphragm driver unit

    Usually, the driver unit housing is made of ABS. The driver unit is produced independently, and is attached to the front plate, which is made of the same ABS. The section where the two are attached along with the ABS resin flex and resonate with the amplitude of the driver unit.

    With SONOROUS X, machining the driver unit and the front plate as an integrated unit from the same piece of aluminum magnesium alloy made it possible to reduce the instabilities that adversely affected sound quality such as resonance and deflection, as well as those arising due to the fit of the adhesive. Doing so resulted in the actualization of crystal clear sound.

    Having tested a variety of materials for the diaphragm, Final has employed titanium, which emits a well-balanced sound over a wide bandwidth. To accurately assemble the titanium diaphragm, they developed specialty jigs and assembly equipment.

    Machined aluminum housing

    Final employed a housing machined from a piece of aluminum magnesium alloy. As with high-end speakers, it contributes to the kind of clear sound that is emitted only from packed solid housings. Layering it over a stainless steel housing whose resonance point differs means that resonance is suppressed without using soft damping materials that dull sound such as rubber.

    Ear pads with a comfortable fit and optimal "suppleness"

    Ear pads play a very important role in sound quality. One of these roles relates to the matter of fitting. When there is space between the ear and the ear pad, low-level acoustic pressure changes considerably and has significant influence on sound quality. Because of this, the choice of both ear pads and the sponge material inside them is important.

    Another aspect is that they are a component that changes greatly over time; with this aging, the sound from the headphones changes in a favorable direction as they are used, and changes in the shape of the ear pad are also a large contributing factor. The ear pad molding itself to the shape of the ear is a positive change, but any excessive change after this may mean a diversion from favorable sound.

    With this, trial listening and comfortable contact with the ear in mind, and with the same amount of stretch both vertically and horizontally, synthetic leather, which changes just the right amount with time, has been employed.

    Detachable cable with locking mechanism

    For the connector on the headphones, a 3.5mm diameter gold-plated monaural plug has been employed. By employing a connector with a lengthy track record, trouble with loose connections has been avoided. The cable has a 90-degree rotary locking mechanism. 1.5m and 3m cables are included.

    Machined stainless steel housing

    In combination with the machined aluminum housing is the machined stainless steel housing that reduces unnecessary vibrations. To demonstrate maximum results, it is necessary that both are machined with the utmost accuracy, and as such, the stainless steel has also been machined. The surface is finished with the tool marks from the machining process left as is. They are machined domestically at a leading specialty machining factory. Taking sufficient time and using extremely finely edged tools, this careful manufacturing is teeming with the know-how of Japanese craftspeople.

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