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Estelon X DIAMOND
The graceful exterior of the new X Diamond Mk II boasts the same sweeping silhouette as its predecessor; however, its soaring cabinet houses a host of technological developments resulting in one of the most sophisticated full-range speakers on the market.
The X Diamond Mk II system’s engineering advancements include a new ultra-hard diamond tweeter and a new crossover network with improved components for a wider dynamic range and transparency. The X Diamond Mk II incorporates new cabling that contributes to an exhilarating audio experience.
All Estelon products are produced in a similar fashion using the same general design and construction principles. Through advanced and innovative engineering concepts, our loudspeakers form a synergy with the room and its acoustics to re-create an emotionally involving listening experience that exposes the soundstage and musical details of the recording, as it was meant to be heard.
Estelon engineering took many years of research and testing to find the right material that would allow the highest quality of cabinet and construction for the loudspeaker’s acoustically engineered complex shape. We developed a proprietary marble-based composite material and special moulding technology to be able to make cabinets with such advanced surface geometry, inside and out.
The unique shape of the cabinet is highly complicated and differs greatly from a classical box design. The combination of curved cabinet walls and a complex system of interior chambers make the cabinet non-resonant. Such a highly advanced and complex cabinet design and construction allows only pure and uninfluenced sound to emanate from the various high-performance driver elements.
In order to assist the loudspeaker to unveil its purest musicality, advanced internal dampening has been implemented. The dampening was designed through a long testing process to have the best effect and overall balance throughout the musical spectrum. We have chosen different natural and synthetic dampening materials. The dampening materials type, placement and amount have been chosen through calculations, measuring and rigorous listening tests.
Each loudspeaker has one woofer, one mid-woofer and one tweeter. In order for the speaker to reproduce the full spectrum of sound with the absolute highest quality, a combination of three different driver types has been carefully chosen. These high-quality drivers are designed and produced by German driver manufacturer Thiel & Partner GmbH under the brand name Accuton and are revered globally as the best.
The crossover components have been chosen from among the absolute best available, and the synergy of the end result has been a significant deciding factor. Every component is measured to yield perfect pairs. The crossover filters are in their own isolated chamber to reduce the microphonic effects and vibration influence. The crossover filter slopes between woofer and mid-woofer are third-order, and second-order between mid-woofer and tweeter.
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Professional Reviews 95/100
Deliciously Crispy
Sound Quality
97/100
Build Quality
97/100
Value for Money
88/100
The Estelon X DIAMOND marries deep, taut bass with silky, extended treble and a strikingly three-dimensional soundstage. Jeff Fritz found its tonal neutrality and image precision intact even at serious levels, while Edgar Kramer praised its refined detail, control and sculptural marble-composite cabinet. It is a true reference-floorstander statement.
What Reviewers Are Saying
Pros
Deep, quick and authoritative bass with impressive definition, impact and minimal overhang.
Exceptionally airy, detailed treble that remains smooth and non-fatiguing rather than etched.
Expansive, deeply layered staging with precisely focused voices and instruments.
Immaculately finished, rigid marble-composite cabinet combines resonance control with genuinely distinctive design.
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Cons
Lively, slightly pronounced mid-treble makes careful source and amplification matching worthwhile.
Ultimate dynamic expression did not equal the reviewer’s reference system, despite excellent speed and impact.
Performance benefits from break-in and thoughtful placement, particularly given the rear-ported design.
SOUND QUALITY PERFORMANCE 97/100
Reviewers describe an exceptionally refined, revealing and emotionally engaging presentation that remains coherent from deep bass to ultra-high frequencies. Its character combines neutral tonal color, unusually expansive imaging and serious low-frequency authority, while needing careful matching to avoid an overly forward upper-mid/treble balance.
Bass
97/100
The large 11-inch woofer is repeatedly praised for bass that is deep, taut, agile and powerful rather than slow or overblown. Kramer heard surprising depth, definition and wallop with no overhang, while Fritz found near room-pressurizing low end and extension to around 20Hz.
Mid
97/100
Voices and instruments are widely described as neutral, clear and uncolored, with exceptionally clean leading edges and convincing decay. Kramer noted a subtly laid-back midrange that aided deep image placement, while another reviewer found the speaker slightly more analytical than earthy in balance.
Treble
97/100
The diamond tweeter earns repeated praise for exceptionally airy, silky and highly resolved highs that remain easy to hear into rather than etched or aggressive. It can sound lively and has a somewhat more pronounced mid-treble region than a Focal Scala, so associated equipment has a meaningful influence on final balance.
Soundstage Imaging
97/100
Soundstaging is a major strength: reviewers report beyond-wall width, striking height, immense depth and tightly outlined images. Kramer calls its staging and imaging sublime, and Fritz heard voices and instruments precisely positioned on a deeply layered, palpably tangible stage.
Dynamics
94/100
The Estelon plays loudly with speed, clean impact and considerable ease, retaining its neutral character at demanding levels near 100dB in Fritz's room. Kramer found excellent snap and pace, though he felt ultimate dynamic expression did not equal his reference system, and noted that the speaker needed some playing time before it fully opened up.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
97/100
The marble-composite, sculpted enclosure receives unusually enthusiastic praise for its rigidity, damping and immaculate deep-gloss finish. Reviewers report no visible construction flaws, commend the sophisticated internal isolation and crossover execution, and describe the result as audio sculpture; supplied wheels, covers and gloves also make a very large speaker more manageable.
Value for Money
88/100
At roughly US$78,000 per pair in standard finish when reviewed, and listed around AU$99,995 in another review, this is unequivocally a luxury purchase. Still, Fritz specifically felt its performance justified a nearly US$40,000 price difference relative to his comparison, while other reviewers regarded the exceptional sound and enclosure as a complete package.
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Authorized dealers for Estelon X DIAMOND
- American Sound — in-store — Richmond Hill, Ontario, Canada (website)
- Anagram Audio — online and in-store — Bury St Edmunds, England, United Kingdom (website)
- Audio Concept - Sweden — online and in-store — Stockholms län, Sweden (website)
- Audio Elation — in-store — Lolo, Montana, United States (website)
- Audiotehnika — in-store — Centra rajons, Latvia (website)
- AV Intelligence - Singapore — in-store — Singapore, Singapore (website)
- AV Solutions - Italy — online and in-store — Aosta, Valle d'Aosta, Italy (website)
- Bliss Hifi — in-store — Minnetonka, Minnesota, United States (website)
- Cinematic Home A/V — in-store — Phoenix, Arizona, United States (website)
- Creative Audio of Tennessee — online and in-store — Franklin, Tennessee, United States (website)
and 22 more verified dealers