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Potato score: 92.3

92%

Estelon XB DIAMOND #1
Estelon XB DIAMOND variant 1

Estelon XB DIAMOND

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The new XB Diamond Mk II is the closest alternative to the X Diamond Mk II, which performs outstandingly in smaller listening spaces. The new XB Diamond Mk II combines the best in sound and design, which is the hallmark of Estelon products.
The XB Diamond Mk II features a 1" diamond tweeter, along with new cabling and a top-of-the-line crossover, that deliver extended high frequencies for a smooth and a resonant-free acoustic experience. The XB Diamond Mk II will intensify the fidelity through its transparency, precision, and the unprecedented detailed reproduction.


Through Estelon’s advanced and innovative engineering concepts, the 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.


The combination of curved cabinet walls and a complex system of interior chambers make the cabinet completely “dead” and non-resonant. Furthermore, the enclosure of each driver system has optimized enclosure geometry to suit specifically for the driver to perform its best. 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.


Room dimensions and characteristics have a significant effect on the listening experience. The pressure at these frequencies changes equally in every position, similar to pressing on a balloon. In these conditions, it is impossible to localize the exact position of the bass driver. This situation allows the placement of the low-frequency driver to be separate from other drivers.


The Estelon XB Diamond’s woofer is positioned close to the floor so that the woofer couple acoustically with the surface of the floor maximizing its efficiency and output. The placement of the woofer close to the floor assists in bass coherency and a more even distribution of room standing waves. This makes it easier to find a suitable listening position in the room, with fewer compromises in bass accuracy.


In frequencies over 100 Hz, there are numerous sound reflections created between the loudspeakers and the walls, ceiling, floor, and furniture/décor. In these higher than low bass frequencies where the wavelength of the sound is short enough for human hearing to be able to detect where the sound originates and to produce localized peaks and valleys in the room due to standing waves, the placement of the driver in relation to other drives becomes significant.


The drivers that reproduce sounds over 100 Hz (mid-woofer and tweeter) are grouped together and physically placed higher in the cabinets. In this configuration, the reflections from adjacent surfaces are minimized. Furthermore, a high degree of coherency can be achieved with a stable stereo image from high bass notes up to the highest harmonics.


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Overall Score 92/100

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Deliciously Crispy

Estelon XB DIAMOND — sculptural speakers with razor-sharp detail

The Estelon XB DIAMOND fuses a striking diamond tweeter and marble-based composite cabinet into a speaker that emphasizes resolution, imaging and composure. Reviewers praise its crystalline high end, natural midrange and authoritative, well-controlled low end: this is a tower that privileges musical detail and three-dimensional presentation.

Sonically the XB DIAMOND is defined by a neutral, intimate midrange and an airy, virtually distortion-free treble driven by Accuton’s diamond dome, while two ceramic woofers deliver impactful, tuneful bass with notable headroom. Dynamics and transient snap are repeatedly called out as a strength, and imaging is expansive and layered—listeners hear clearly delineated instruments and lifelike vocal presence.

Build is boutique: heavy 69kg cabinets, Kubala-Sosna wiring and a separately housed crossover. Ideal for large rooms and high-end systems where sonic nuance and presence matter. For buyers seeking showpiece aesthetics plus world-class clarity, the XB DIAMOND is a compelling, if high-priced, statement.

Best of High End

"Furthermore, since the diamond tweeter’s resonances are outside the audible range, even the slightest distortions completely disappear."

Pros

  • Exceptionally refined treble with minimal distortion thanks to the Accuton diamond tweeter and high-end crossover.
  • Natural, well-focused midrange and outstanding imaging that renders vocals and instruments with palpable body and depth.
  • Strong dynamics and ample headroom—handles high SPLs without compression and delivers tight, tuneful bass for most rooms.
  • Premium build and materials (marble-based composite cabinet, Kubala-Sosna wiring, isolated crossover chamber) that control resonances and support long-term reliability.

&

Cons

  • High cost and niche positioning—exceptional performance but a significant financial commitment.
  • Placement- and room-sensitive: benefits from careful toe-in and space from the wall to balance top-end brilliance and rear-ported bass.

Sound Quality

93/100

Bass

92/100

Reviewers describe 'ample quantity' and bass that approaches full-range depth (present down to 41.2Hz and close to 27.5Hz). Driver complement includes an 8.7" woofer and large 69 kg cabinet with claimed 22–23Hz response; performance is authoritative and articulate but reviewers note it doesn't quite have the sub-bass 'massage' of larger Forza models. Matches a large-tower bass band ceiling.

Mid

94/100

Multiple reviewers praise a natural, relaxed and neutral midrange with good vocal presence and mid-bass neutrality. Best of High End highlights the dedicated mid-bass enclosure and ceramic dome for midrange neutrality; Audiophilepure notes lively, articulate double bass and musicality.

Treble

95/100

Diamond inverted-dome tweeter and top-end crossover get explicit praise: very low distortion, resonances outside audible range, open and highly detailed treble. Reviewers report a refined, airy high end and minimal distortion from the Accuton diamond tweeter.

Soundstage Imaging

92/100

Described as open, deep and precise with an excellent acoustic presentation; imaging cues are stable and musical. Reviewers emphasize an expansive, natural soundfield though specific room/placement sensitivity was not deeply discussed.

Dynamics

93/100

Reviewers noted ample headroom and that they 'never came close to running out of power.' Driver/motor design details (FEA-optimized motors, venting, low energy storage) and 150W rating support strong micro/macro dynamics and low compression.

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Build Quality

95/100

Exceptional engineering and materials: marble-based composite cabinet, heavy 69 kg enclosures, Kubala-Sosna internal wiring, separate crossover chamber with Teflon capacitors and air-core inductors. Reviewers highlight resonance control and premium construction.

Features Connectivity

80/100

Passive baseline applied.

Value for Money

70/100

Extremely expensive (listed ~79,700). Reviews celebrate performance and refinement but do not frame it as outstanding value; this is clearly a high-end, niche purchase aimed at buyers prioritizing top-tier sound and build over cost.

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