X Diamond Mk II

Reference Performance for Smaller Listening Spaces

The X Diamond Mk II is the closest alternative to the Extreme Mk II for more compact, high-performance listening environments. It captures Estelon’s signature sound and sculptural design while offering exceptional transparency, precision, and emotional realism in smaller rooms.

Featuring a 1-inch diamond tweeter, refined internal cabling, and a meticulously engineered crossover network, the X Diamond Mk II delivers extended, resonance-free high frequencies and an intensely pure, immersive listening experience.

Design Philosophy: Sound and Space in Harmony

At Estelon, every loudspeaker is designed with the understanding that sound is shaped by its surroundings. Floors, walls, ceilings, and furnishings all interact with music, influencing how it is perceived.

The X Diamond Mk II is engineered to work in harmony with these real-world conditions, creating a natural, emotionally engaging soundstage where music feels alive, balanced, and unfiltered.

• Low frequencies behave like pressure waves, filling the room rather than travelling directionally. Positioning the woofer near the floor improves surface coupling and ensures more even bass distribution.

• Mid and high frequencies are handled by drivers positioned higher on the cabinet in close vertical alignment, reducing reflections and delivering a stable, focused stereo image.

Advanced Cabinet Technology

The X Diamond Mk II employs a cabinet design that departs entirely from traditional loudspeaker enclosures. There are no flat or parallel surfaces, minimising internal reflections and standing waves.

Constructed from Estelon’s proprietary marble-based composite, the cabinet is exceptionally rigid, dense, and acoustically inert. Its substantial mass contributes to outstanding stability and resonance control.

Each driver is housed in a specially shaped internal chamber optimised for its frequency range. Internal damping uses a precisely calibrated mix of natural and synthetic materials, positioned through extensive measurement and listening tests to achieve optimal tonal balance, clarity, and detail.

Precision Driver System by Accuton

The X Diamond Mk II features a carefully matched three-driver system, custom-designed in collaboration with Accuton:

• 280 mm ceramic sandwich woofer for deep, controlled, and articulate bass

• 173 mm ceramic mid-woofer delivering fast transients and a clean, transparent midrange

• 25 mm diamond membrane tweeter providing exceptional detail, realism, and precise spatial cues

Each driver is housed in its own dedicated chamber. The woofer operates within a rear-ported bass reflex enclosure, while the tweeter is placed in an isolated chamber shaped to ensure wide, controlled dispersion and accurate imaging.

Driver Positioning & Cabinet Geometry

All drivers are mounted on a curved front baffle, ensuring they are equidistant from the listening position. This geometry, combined with precision-tuned crossovers, allows sound from all drivers to arrive simultaneously.

The result is accurate imaging, seamless driver integration, and a coherent, natural soundstage with precise tonal balance across the entire listening area.

Precision Crossover Design

The X Diamond Mk II uses a second-order crossover network, with crossover points set at 77 Hz and 2 kHz.

Only premium components are employed:

• Mundorf and Jantzen capacitors

• Goertz and Mundorf inductors

All components are hand-soldered in a star-wired configuration, using Estelon’s proprietary flat foil direct coupling technique to preserve signal integrity. Internal cabling is by Kubala-Sosna, ensuring maximum transparency and minimal signal loss.

This meticulous approach ensures accurate time alignment, phase coherence, and exceptional musical flow.

Custom Finishing & Handcrafted Excellence

Every X Diamond Mk II is hand-finished over several weeks using a twelve-layer painting, wet sanding, and polishing process.

A wide range of finishes is available, with custom colours and finishes offered upon request, allowing the loudspeaker to integrate seamlessly into both modern and classic interiors.