Estelon - Extreme MK2 - Floorstanding Speakers

Estelon was founded in Tallinn, Estonia in 2010 by Alfred Vassilkov, a loudspeaker designer with decades of experience who wanted to build speakers that were simultaneously world-class acoustically and genuinely beautiful as objects in a room. The result is a range of loudspeakers whose curved, marble-based cabinets are unlike anything else in high-end audio — not as a stylistic statement, but because the curved, resonance-free enclosure is the engineering solution that Vassilkov believed produced the best sound. Every Estelon speaker is built by hand in Tallinn by a small team of craftspeople who treat each pair as a commission, not a production run.

ENGINEERING PHILOSOPHY

The fundamental engineering insight behind every Estelon design is that a loudspeaker cabinet should be acoustically inert and mechanically stable — and that achieving this with conventional materials and rectangular shapes requires compromises that ultimately colour the sound. Estelon's curved enclosures, constructed from a proprietary composite material with a marble base, eliminate internal standing waves and provide a mechanical grounding that allows the drivers — sourced from the finest European manufacturers — to operate with complete freedom. The crossover networks are point-to-point wired, using components chosen for their sonic character rather than their specification alone. What you hear from an Estelon speaker is not the cabinet. It is the music.

WHY THE AUDIO TAILOR CARRIES ESTELON

We carry Estelon because it answers a question that matters to a growing number of our clients: why should a world-class loudspeaker have to be hidden away or apologised for aesthetically? An Estelon speaker belongs in a beautiful room. It is also, by any measure, among the finest speakers in the world.

Bespoke product - please inquire for lead time

Estelon Extreme Mk II

A Reference Loudspeaker Where Art Meets Acoustic Perfection

The Estelon Extreme Mk II is a flagship high-end loudspeaker that combines emotionally immersive sound, groundbreaking acoustic engineering, and sculptural design. Fully adjustable and meticulously handcrafted, it delivers a truly life-like listening experience tailored to even the most complex acoustic environments.

Designed for discerning audiophiles and reference-level systems, the Extreme Mk II represents the pinnacle of modern loudspeaker design.

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What Makes the Estelon Extreme Mk II Exceptional

Precision Engineering Meets Musical Emotion

Through advanced engineering and obsessive craftsmanship, the Extreme Mk II seamlessly blends art and science to create a loudspeaker that adapts effortlessly to your room while preserving absolute sonic purity.

Key innovations include:

• Height-Adjustable Architecture
  The motorised upper module adjusts up to 300 mm, allowing precise soundstage alignment for optimal listening height and room integration.

• Diamond Tweeter & Accuton CELL Drivers
  World-class Accuton drivers, including a CELL diamond tweeter, deliver exceptional clarity, speed, and micro-detail with unrivalled precision.

• Symmetric Driver Loading (SDL) Bass System
  Dual woofers operate symmetrically to produce deep, controlled, phase-accurate bass with minimal distortion.

• Room-Aware Acoustic Design
  Engineered to integrate seamlessly into complex acoustic spaces, ensuring consistent performance across different room sizes and layouts.

• Sculptural, Resonance-Free Cabinet
  A non-box, curved enclosure eliminates internal reflections, standing waves, and cabinet resonance for pure, uncoloured sound.

• Remote-Controlled Adjustments
  Fine-tune performance effortlessly with remote-controlled height and tweeter adjustments for precise room optimisation.

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Refined by Nature and Engineering

Each Estelon Extreme Mk II is crafted from a proprietary marble-based composite, chosen for its exceptional density, rigidity, and acoustic neutrality.

• Seamless curved cabinet with no parallel walls for distortion-free sound reproduction

• 250 kg per speaker, providing extreme stability for both delicate micro-details and explosive dynamics

• Available in gloss, matte, or fully customised finishes

• Hand-polished over several weeks using a 12-layer paint process for flawless visual depth

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Acoustic Performance – Core Technologies

Room Integration & Soundstage Optimisation

• Woofers positioned close to the floor enhance low-frequency response while reducing standing waves

• Midrange and tweeter drivers are elevated for improved imaging and spatial accuracy

• Curved front baffle preserves time alignment and dispersion control

Cabinet Design & Internal Chambers

• Separate internal enclosures for each driver eliminate intermodulation

• Advanced damping materials and optimised chamber geometry prevent resonances and tonal colouration

Tweeter Adjustment & Precision Control

• Motorised camshaft system enables five-step depth tuning of the diamond tweeter

• Curved baffle and suede-covered foam ring minimise diffraction and enhance image focus

Bass Reflex & SDL Technology

• Rear bass reflex tunnel with internal damping reduces turbulence and noise

• Dual 11-inch aluminium sandwich woofers operate symmetrically for clean, authoritative bass

Upper Module Height Adjustment

• Remote-controlled movement up to 300 mm for precise adaptation to listening position

• High-precision linear actuator ensures repeatable accuracy with built-in safety mechanisms

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Driver Configuration by Accuton

Each speaker features a carefully matched Accuton driver array:

• 2 × 250 mm (11″) CELL aluminium sandwich woofers (custom design)

• 1 × 250 mm (11″) CELL aluminium sandwich mid-woofer (custom design)

• 1 × 168 mm (7″) CELL ceramic membrane midrange

• 1 × 25 mm (1″) CELL diamond tweeter

Together, these drivers deliver coherent soundstaging, realistic dynamics, and effortless musical flow across the full frequency spectrum.

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Precision Crossovers & Signal Purity

At the heart of the Estelon Extreme Mk II lies a meticulously engineered crossover network designed to integrate all drivers seamlessly in both time and frequency domains.

• Premium components including SESGO capacitors, Mundorf inductors, Goertz flat-foil coils, and precision thick-foil resistors

• Components individually measured, matched, and auditioned for maximum synergy

• Crossovers housed in isolated internal chambers to eliminate vibration and microphonic interference

• Proprietary flat-foil direct coupling with star-grounded signal routing preserves absolute signal integrity

• Hand-soldered connections with minimal cable lengths ensure uncompromised resolution and timing accuracy

This obsessive attention to detail ensures the Extreme Mk II reproduces music exactly as intended — with unparalleled transparency, control, and emotional impact.

Specification	Details
Type	4-way passive loudspeaker, bass reflex
Drivers	2 × 250 mm (11″) CELL aluminium sandwich woofers (custom Accuton)1 × 250 mm (11″) CELL aluminium sandwich mid-woofer (custom Accuton)1 × 168 mm (7″) CELL ceramic membrane midrange (Accuton)1 × 25 mm (1″) CELL diamond tweeter (Accuton)
Internal wiring	Kubala-Sosna
Frequency response	23 Hz – 60,000 Hz (linear to 33,000 Hz)
Power rating	500 W
Nominal impedance	3 Ω (minimum 2.0 Ω at 95 Hz)
Sensitivity	91 dB / 2.83 V
Minimum amplifier power	20 W
Cabinet material	Marble-based composite
Dimensions (H × W × D)	1770–2070 mm (adjustable) × 690 mm × 820 mm
Net weight	250 kg per loudspeaker
Recommended room size	50 – 200 m²