X DIAMOND

Timeless
design,
powerful
performance

The X Diamond Mk II is the closest alternative to the Extreme Mk II in smaller listening spaces.
It combines Estelon’s hallmark sound and design, featuring a 1” diamond tweeter, refined cabling, and a top-tier crossover for extended, resonant-free high frequencies.
With its transparency, precision, and exceptional detail, the X Diamond Mk II delivers an intensely pure and immersive listening experience.

Contact your local dealer

Timeless
design,
powerful
performance

The X Diamond Mk II is the closest alternative to the Extreme Mk II in smaller listening spaces.
It combines Estelon’s hallmark sound and design, featuring a 1” diamond tweeter, refined cabling, and a top-tier crossover for extended, resonant-free high frequencies.
With its transparency, precision, and exceptional detail, the X Diamond Mk II delivers an intensely pure and immersive listening experience.

Contact your local dealer

Design Philosophy

At Estelon, every loudspeaker is shaped by the space it lives in. Our design philosophy considers not just the loudspeaker, but the entire room, including floors, walls, ceilings, and furniture. These elements all interact with sound and influence how music is experienced.
Our goal is to create a natural, emotionally engaging listening environment where music feels alive and unfiltered.

For low frequencies, sound behaves like a pressure wave, filling the space rather than traveling in a specific direction. That is why we place the woofer near the floor, helping it couple with the surface and distribute bass more evenly.
For higher frequencies, the mid-woofer and tweeter are positioned higher on the cabinet in close vertical alignment, reducing reflections and delivering a stable, focused soundstage.

Cabinet Technology

The X Diamond Mk II uses a cabinet design unlike traditional speaker enclosures, with no flat or parallel surfaces. Built from Estelon’s proprietary marble-based composite, the cabinet is rigid, dense, and acoustically inert.
Each driver sits within a specially shaped internal chamber that supports its performance, while the cabinet’s weight contributes to stability and resonance control.
Internal dampening uses a precise mix of natural and synthetic materials, placed based on measurements and listening tests for tonal balance and detail.

Driver System

Driver System

The X Diamond Mk II features three drivers, all custom-designed with Accuton: one woofer, one mid-woofer, and one tweeter.

  • 280 mm ceramic sandwich woofer for deep, controlled bass.
  • 173 mm ceramic mid-woofer for fast transients and clean midrange.
  • 25 mm diamond tweeter for exceptional detail, realism, and spatial cues.

Each driver is housed in its own chamber: the woofer in a bass reflex chamber, the tweeter in an isolated chamber shaped for wide dispersion.

Driver Positioning and Cabinet Geometry

The drivers are placed on a curved front baffle to ensure they are equidistant from the listener. This geometry, combined with precision-tuned crossovers, ensures simultaneous sound arrival, accurate imaging, and perfect tonal balance.

Crossover Design

The X Diamond Mk II uses a second-order crossover network, with crossover points at 77 Hz and 2 kHz.
Components include Mundorf and Jantzen capacitors, Goertz and Mundorf inductors, and all are hand-soldered in a star-wired configuration using Estelon’s flat foil direct coupling.
Internal cabling is by Kubala-Sosna, ensuring uncompromised signal clarity.

Custom Finishing

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

Custom finishes are available upon request.

Black Lava Liquid Gloss
Blue Cobalt Liquid Gloss
Red Rocket Liquid Gloss
Silver Pure Alu Liquid Gloss
Silver Pure Alu Matte
Violet Night Liquid Gloss
White Gloss
White Matte

Technical
specifications

TYPE
3-way passive loudspeaker, bass reflex
FREQUENCY RESPONSE
23 – 60,000 Hz (linear to 33,000 Hz)
POWER RATING
200 W
NOMINAL IMPEDANCE
6 Ohms (min 3.5 Ohms at 25 Hz)
SENSITIVITY
87 dB/2.83 V
MINIMUM AMPLIFIER POWER
30 W
INTERNAL CABLING
Kubala-Sosna
CABINET MATERIAL
Marble-based composite
DRIVERS
Woofer: 280 mm ceramic sandwich from Accuton
Mid-woofer: 173 mm ceramic membrane from Accuton
Tweeter: 25 mm diamond inverted dome from Accuton
DIMENSIONS
Height: 1370 mm
Width: 450 mm
Depth: 640 mm
Net weight: 86 kg per piece
RECOMMENDED ROOM SIZE
25 – 80 m²

2024
Editors’
Choice
Award

The Absolute Sound,
USA

2023
Best Sound
at Munich

Part-Time Audiophile,
USA

2023
Editor’s
Choice
Award

The Absolute Sound,
USA

2022
Editors’
Choice
Award

The Absolute Sound,
USA

2022
Best Performance
of the Year

Audio Art,
Taiwan

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