Focal Stellia – Reference Closed-Back Beryllium Headphones

Reference Focal performance. Closed-back freedom.

The Focal Stellia brings the resolution and technical sophistication of Focal's reference headphone engineering to a luxurious closed-back design. Developed and manufactured in France, Stellia uses proprietary 40mm pure Beryllium M-shaped dome drivers engineered specifically for the acoustic demands of a sealed earcup.

With a low 35-ohm impedance, Stellia is unusually versatile for a reference headphone. It can reveal the capabilities of a serious desktop headphone amplifier while remaining practical enough to pair with premium portable sources.

The result is a closed-back headphone capable of extraordinary detail, dynamics, tonal precision, and isolation—without requiring the dedicated listening environment of an open-back design. Focal

Pure Beryllium M-Dome Drivers

At the heart of Stellia is Focal's 40mm pure Beryllium M-shaped dome driver.

Beryllium combines extremely low mass with exceptional rigidity, allowing the diaphragm to respond rapidly while resisting deformation. Focal's distinctive M-shaped geometry further increases rigidity and extends the effective radiating surface.

The driver also uses a frameless copper voice coil and specially developed suspension, reducing moving mass and helping Stellia reproduce subtle transient information and dynamic contrasts with remarkable precision. Focal

Engineered Specifically for Closed-Back Listening

Creating a reference closed-back headphone requires more than placing a high-performance driver inside a sealed enclosure.

Focal developed an internal acoustic treatment system using strategically positioned vents, EVA foam, and acoustic diffusers to control high-frequency energy and reduce standing waves inside the earcups.

The earpads are also part of the acoustic system. Portions of the full-grain leather surface provide diffusion, while acoustic fabric and memory foam contribute absorption and isolation.

This carefully controlled environment allows Stellia to retain the detail and spaciousness expected from a reference headphone while providing the privacy and reduced sound leakage of a closed-back design. Focal

Reference Performance Without a Difficult Load

Stellia's 35-ohm impedance makes it considerably easier to drive than many traditional reference headphones.

That opens the door to a wide range of systems—from premium portable DAC/headphone amplifiers to dedicated desktop electronics and components such as the Naim Uniti Atom Headphone Edition.

Its efficiency doesn't eliminate the benefits of better electronics. Stellia's resolving ability makes improvements in DACs, amplification, streaming, and source quality readily apparent, giving the headphone substantial room to scale as the system improves. Focal

Luxury Materials and Exceptional Comfort

Stellia's construction reflects its position within Focal's reference headphone range.

The headband and yoke mechanism is derived from Focal Utopia, with a continuous curvature designed to distribute pressure comfortably around the head.

Full-grain leather covers the headband and memory-foam earpads, while solid aluminum yokes provide structural rigidity.

Cognac and Mocha finishes give Stellia a distinctive appearance that separates it visually from Focal's more conventional headphone designs. Focal

Designed for Home and Portable Systems

Focal supplies Stellia with cabling for both applications.

A 1.2-meter cable terminated in a 3.5mm connector accommodates portable sources, while a 3-meter balanced cable with a 4-pin XLR termination is provided for dedicated headphone amplifiers.

A 3.5mm-to-6.35mm adapter, fitted carrying case, and presentation storage box are also included. Focal

Technical Specifications

*Focal's current English specifications table lists 5Hz–23kHz ±3dB, while the technology section on the same page describes the Beryllium driver as capable of a 5Hz–40kHz response. I would use the formal specification-table figure for the Shopify specs rather than mixing the two claims. Focal

Experience Focal Stellia at The Grid HiFi

Focal Stellia is built for listeners who want reference-level headphone performance without the limitations of an open-back design. Its pure Beryllium drivers, sophisticated acoustic treatment, premium materials, and unusually accessible 35-ohm load make it equally compelling as the centerpiece of a dedicated headphone system or an extraordinary private listening solution.

As a Focal Powered by Naim partner, The Grid HiFi can help pair Stellia with the right DAC, streamer, headphone amplifier, and cabling to realize its full potential.

Visit The Grid HiFi in Houston or call (713) 218-8120 for availability and system recommendations.