Final Audio DX6000 Headphones

A magnesium alloy dome brings rich, refined sound with natural ease.

The Free Air Structure unveils a spacious, lifelike stage.

With the Transient-Enhancing Coil, every detail comes alive.

Experience an Ultra-Open Soundstage with the Free Air Structure

Achieving natural bass reproduction from a driver compact enough to ftt into headphones has long been a major challenge. Traditionally, headphone designs rely on a sealed space between the driver and the listener's ear to enhance acoustic compliance and boost bass response. However, this sealed approach often compromises the openness and natural character of the sound.

With our newly developed driver, we've successfully lowered its minimum resonant frequency (fo), allowing it to produce rich, full-bodied bass on its own. This advancement paved the way for our Free Air Structure, which seamlessly connects the front and rear of the driver, enabling unrestricted airflow within the earcups. The result is an astonishingly natural and spacious sound-something rarely achieved in headphone listening.

Magnesium Alloy Dynamic Driver Featuring a Foamed Silicone Edge

The newly designed dynamic driver unit (DU) adopts a high-rigidity, high internal-damping magnesium alloy diaphragm. This minimizes unwanted resonance and breakup vibration, ensuring clean and accurate sound reproduction.

One of the greatest challenges in this development was designing the edge. Conventional edge materials often introduce resonance in specific frequency ranges. While speaker manufacturers have explored various edge shapes to address this issue, we took a different path-using a specially formulated foamed silicone resin.

Leveraging the ultra-lightweight nature of foamed materials, we created a thick yet soft edge that solves the conflicting demands of responsiveness and resonance suppression. To achieve optimal consistency and structural integrity, the edge and diaphragm are not glued together, as is commonly done. Instead, the magnesium diaphragm is placed inside the mold, and the foamed silicone is cast around it, forming a seamless structure. This approach eliminates variation from glue application and ensures superior performance across units.

Another common obstacle in dynamic driver performance is the voice coil lead wire being glued directly to the edge. While this prevents disconnection, it creates imbalanced motion in the diaphragm. To maintain accurate piston motion, our design suspends the lead wire in air rather than bonding it to the edge. To ensure both durability and acoustic purity, we use a proprietary aluminum alloy wire developed by final for the voice coil.

Transient-Enhancing Coil for Precise Response to Every Input Signal

Traditionally, open-back headphones suppress excessive treble by increasing the number of voice coil windings, which raises impedance, inductance (L), and mass. However, the added weight from a heavier voice coil negatively impacts the diaphragm's transient response.
To resolve this trade-off, we developed the Transient-Enhancing Coil, a dedicated coil placed in series with the driver. This allows the diaphragm assembly (diaphragm edge voice coil) to remain lightweight, while naturally attenuating high-frequency output. It also enables the use of a softer, more responsive edge material to achieve a lower fo.
The result is a rare balance-an open and natural soundstage, reinforced by rich low-frequency presence and enhanced transient clarity, all made possible by a highly responsive, low-mass driver system.

Note:
Due to the implementation of the Transient-Enhancing Coil, the rated impedance is 472
@1kHz, but increases to 4800 at 20kHz. Therefore, we recommend using a desktop amplifier with sufficient power output rather than portable devices.

Precision-Machined Aluminum-Magnesium Alloy Housing

The housing is precisely machined from a solid block of aluminum-magnesium alloy. This robust structure firmly supports the driver while minimizing unwanted resonance and sound distortion.

Open Earpads Made with Unique Washi-Based Material

Most headphones-even those marketed as open-back-rely on partially sealing the space inside the carpads to artificially extend low-frequency response beyond what the driver itself can produce. However, to faithfully reproduce the natural depth and spaciousness of original recordings, a driver must be capable of reproducing low frequencies on its own. This also requires the use of low-seal, breathable earpads.
In conventional dynamic headphones, such breathable designs often result in weak bass response. But with our newly developed driver featuring an exceptionally low minimum resonance frequency (fo), powerful bass is achieved without relying on enclosure effects. To complement this acoustic performance, we developed a unique earpad using breathable foam and a custom fabric made with traditional Japanese washi paper-offering both durability and a dry, comfortable feel against the skin. The same washi-based material is also used on the headband, enhancing moisture resistance and long-term comfort.

Compact and Portable Semi-Hard Case

The product comes housed in a compact, travel-friendly semi-hard case for added convenience.

Specifications

Model: FI-DX6DAL
Housing: Aluminum-Magnesium alloy
Driver: Magnesium Alloy Dynamic Driver
Cable: OFC Slim cable
Sensitivity: 83 dB/mW
Impedance: 479 (1kHz)
Weight: 363g
Cable: 3m OFC Cable with XLR 4pin Connection