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Potato score: 93.12

93%

Estelon X DIAMOND #1
Estelon X DIAMOND variant 1

Estelon X DIAMOND

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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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Overall Score 93/100

Rating for [object Object]

Deliciously Crispy

Estelon X DIAMOND — sculptural design with trophy-room sound

The X DIAMOND (Mk II) marries showpiece aesthetics with a highly resolved, full-band performance: deep, taut bass from an 11" Accuton woofer, an utterly neutral midband, and an airy, super-extended diamond tweeter that reveals microdetail without glare. Reviewers found the speaker both an object of art and a reference-quality transducer — a room-filling performer that still rewards careful setup.

Sonically, the X DIAMOND delivers a nimble low end that can pressurize a room while remaining tight and well defined; mids are uncolored and immediate; highs are silkily extended yet controlled, giving cymbals and vocal overtones a believable sheen. Dynamics are expressive and the soundstage is exceptionally wide and deep, producing precise, three-dimensional images.

Build and engineering echo the sound: a dense marble-based composite cabinet, hand-finished lacquer, high-grade crossover parts and Kubala-Sosna wiring underpin the voicing and keep cabinet artifacts to a minimum. As Edgar Kramer notes, the design is both beautiful and purpose-built; Jeff Fritz found setup and connections straightforward.

Ideal for discerning listeners with high-end systems and rooms (and a willingness to invest), the X DIAMOND is a statement of refinement and musical authority — a top-tier flagship for those who prize finish, imaging, and full-range control.

Audiophilepure

"it is one of the greatest floorstanding, direct-radiating loudspeakers."

Pros

  • Deep, authoritative yet controlled bass that extends very low and remains tight and quick.
  • Airy, highly extended treble from the Accuton diamond tweeter — detailed and non-fatiguing.
  • Exceptionally refined build and finish: dense marble-based composite cabinet, superb lacquer and thoughtful engineering.
  • Sublime soundstaging and image specificity — wide, tall and convincingly deep three-dimensional presentation.

&

Cons

  • Very high price — performance and finish justify it for many but places the X DIAMOND well into trophy-speaker territory.
  • Slight mid-treble forwardness reported by some reviewers — can require careful system pairing to fully integrate.
  • Benefits noticeably from break-in and careful placement; early impressions may sound restrained until run-in.

Sound Quality

95/100

Bass

96/100

Multiple reviewers cite deep, authoritative low end (–4 dB at 20 Hz reported, room-pressurizing lows). Comments emphasise tight, quick, well-defined bass with no overhang and surprising wallop from the 11" woofer. Given repeat praise for sub-bass authority and extension, a near-reference bass score is warranted.

Mid

95/100

Reviewers consistently describe an uncolored, natural midband with flawless clarity and superb instrument/vocal localisation. Phrases used include 'entirely uncolored midband', 'flawless, unclouded detail' and 'mesmerising' decay, supporting a very high midrange rating.

Treble

94/100

Diamond Accuton tweeter is repeatedly praised for airy, silky, highly extended highs that remain controlled and non-aggressive. Some reviewers note a slightly more pronounced mid-treble region versus certain references, but overall extension, detail and refinement are excellent.

Soundstage Imaging

95/100

Observers report sublime soundstaging with wide, tall images and exceptional depth and precise image placement ('beyond wall to wall', 'magnificently deep'). The speakers' cabinet architecture and imaging focus deliver layered, stable three-dimensional presentation.

Dynamics

92/100

Dynamics are praised for snap, slam and speed (strong snare transients, explosive bursts) and the speakers can play very loud without strain. A couple of comments noted a slight initial politeness until break-in and that extreme dynamic expression didn’t always match the very top-tier references, hence a slightly lower but excellent score.

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Build Quality

96/100

Exquisite finishes, dense marble-composite cabinets, careful internal partitioning and high-end crossover parts (Kubala-Sosna wiring, Mundorf components) earn top marks. Reviewers call the cabinetry and finish among the best they've seen and note thoughtful engineering to reduce port turbulence and isolate the crossover.

Features Connectivity

80/100

Passive tower baseline applied (single set of high-quality Furutech binding posts; Kubala-Sosna internal wiring and isolated crossover chamber noted). No bi-wire, DSP or special onboard EQ reported, so passive baseline score retained.

Value for Money

86/100

At a very high price point reviewers nonetheless repeatedly endorse the speakers and some state they justify their cost in terms of performance and finish. Given premium pricing, the speakers are described as worth the investment by several reviewers but not positioned as bargain value, so a high-but-sensible score is used.

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