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Home News

Introducing the Estelon X Diamond Mk II

Finn de Kroon by Finn de Kroon
June 29, 2025
in News, Loudspeakers
Reading Time: 3 mins read
Introducing-the-Estelon-X-Diamond-Mk-II

The X Diamond Mk II stands out as the most comparable alternative to the renowned Extreme Mk II, specifically designed for smaller listening environments. It embodies Estelon’s signature blend of exceptional sound quality and refined aesthetics, making it an ideal choice for audiophiles seeking high performance within more modest spaces.

  • Unmatched Sound Quality and Design
  • Innovative Approach to Low and High Frequencies
  • Design Philosophy Harmonizing with the Room
  • Unique Cabinet Construction for Optimal Acoustics
  • Precision-Designed Drivers
  • Precision Engineering for Accurate Soundstage

Unmatched Sound Quality and Design

This loudspeaker features a 1” diamond tweeter, renowned for its extended, resonant-free high frequencies, complemented by refined cabling and a top-tier crossover network. The result is an audio output characterized by transparency, precision, and remarkable detail delivering an immersive and pure listening experience that captures the essence of live music.

Introducing-the-Estelon-X-Diamond-Mk-II-1

Innovative Approach to Low and High Frequencies

The X Diamond Mk II employs a thoughtful design philosophy to optimize sound dispersion:

  • Low Frequencies: Recognizing that bass behaves like a pressure wave that fills a space rather than traveling in a specific direction, the woofer is strategically placed near the floor. This positioning facilitates coupling with the surface, promoting more even bass distribution throughout the room.
  • High Frequencies: The mid-woofer and diamond tweeter are positioned higher on the cabinet in close vertical alignment. This setup minimizes reflections and ensures a stable, focused soundstage, enhancing clarity and spatial accuracy.

Design Philosophy Harmonizing with the Room

At Estelon, the loudspeaker design extends beyond the device itself to encompass the room environment. Every element floors, walls, ceilings, and furniture is considered for its interaction with sound. The goal is to craft a natural, emotionally engaging listening environment where music feels alive and unfiltered, regardless of the space.

Unique Cabinet Construction for Optimal Acoustics

Moving away from traditional flat or parallel surfaces, the X Diamond Mk II features a cabinet crafted from Estelon’s proprietary marble-based composite. Its rigidity, density, and inertness prevent unwanted vibrations and resonances. Each driver is housed within a specially shaped internal chamber, enhancing performance and tonal clarity.

The cabinet’s weight further stabilizes the structure, aiding resonance control. Internal damping employs a precise blend of natural and synthetic materials, meticulously placed based on thorough measurements and listening tests to attain perfect tonal balance and detail.

Introducing-the-Estelon-X-Diamond-Mk-II-20

Precision-Designed Drivers

The speaker is equipped with three custom-designed drivers, all crafted in collaboration with Accuton:

  • 280 mm Ceramic Sandwich Woofer: Delivers deep, controlled bass, filling the room with richness and power.
  • 173 mm Ceramic Mid-Woofer: Ensures fast transients and clean midrange, contributing to natural vocal and instrument reproduction.
  • 25 mm Diamond Tweeter: Provides exceptional detail, realism, and spatial cues, elevating the high-frequency response to a new standard.

Each driver resides in its own chamber— the woofer in a bass reflex chamber, and the tweeter in an isolated chamber shaped for wide dispersion to optimize performance and minimize interference.

Precision Engineering for Accurate Soundstage

The drivers are mounted on a curved front baffle, ensuring they are equidistant from the listener—a critical factor for accurate imaging. This geometry, combined with precisely tuned second-order crossovers at 77 Hz and 2 kHz, guarantees that all sound components arrive simultaneously, resulting in impeccable tonal balance and a cohesive soundstage.

Crossover components include Mundorf and Jantzen capacitors, Goertz and Mundorf inductors, all hand-soldered in a star-wired configuration with Estelon’s innovative flat foil direct coupling. The internal cabling by Kubala-Sosna further ensures signal integrity and clarity throughout the audio path.

Tags: EstelonLoudspeakers
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Finn de Kroon

Finn de Kroon

Editor & Videographer

Finn de Kroon is an editor and videographer at Best of High End. His path into the audio-visual world began with an audiovisual study in Brussels in 2022; his interest in hi-fi followed soon after, when he started writing for Best of High End and began discovering new brands and everything the audio world had to offer. In 2024, Finn became a full-time videographer, producing promotional and business videos. Attending the High End show in Munich and Vienna deepened his knowledge of what the hi-fi world has to offer, further immersing him in the industry. Today, Finn's main area of expertise is video: he produces most of the videos published on Best of High End, alongside writing articles for the site's news page. Since joining Best of High End, he has fallen in love with high-end sound systems, and looks forward to discovering new brands and systems.

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