CLARUS

Every Facet, Every Reflection
 
  • REVOLUTIONARY 9-DRIVER TRIBRID ARCHITECTURE: Experience a class-defining acoustic standard. The CLARUS features an intricately harmonised nine-driver system combining a proprietary 9mm dynamic driver for deep tactile bass, seven Sonion balanced armature drivers for absolute midrange and high-frequency presence, and a cutting-edge silicon MEMS tweeter for semiconductor-level speed in the upper treble.
  • SEMICONDUCTOR-LEVEL SILICON MEMS TWEETER: Equipped with a state-of-the-art, top-firing silicon MEMS tweeter operating from 7kHz to 10kHz. Its monolithic silicon structure delivers industry-leading speed, perfect phase stability, and flawless consistency, restoring microscopic high-frequency details with a level of focus that traditional drivers cannot match.
  • PROPRIETARY SIX-WAY ACOUSTIC CROSSOVER: Unlike standard multi-driver designs, the CLARUS utilizes an advanced six-way crossover network to manage each driver group's operating range. This ensures independent filtering and integration, preserving timing, phase coherence, and smooth tonal transitions across the entire 20Hz to 20kHz frequency spectrum.
  • AEROSPACE-GRADE CNC ALUMINIUM SHELL: Each housing is meticulously CNC-machined from lightweight aerospace-grade 6061-T6 aluminium and finished in anodised silver. Designed with an organic, ergonomic profile, it provides a highly stable, comfortable fit inside the ear while managing internal stiffness and resonance control for an ultra-quiet acoustic background.
  • PREMIUM ASTELL&KERN × EFFECT AUDIO CUSTOM CABLE: Delivered with a bespoke premium cable co-developed with Effect Audio, a global pioneer in high-end headphone cables. Featuring UP-OCC pure copper Litz conductors in a robust 24 AWG four-wire dual geometric design, it guarantees uncompromised, low-distortion signal transmission.
  • EXCLUSIVE AZLA MEDICAL-GRADE SILICONE TIPS: Includes AZLA SednaEarfit SE2000 ear tips in six precise sizes (SS, S, MS, M, ML, L) to ensure a flawless acoustic seal and long-term comfort. Handcrafted from premium KCC medical-grade silicone, they prevent fatigue and irritation while optimising high-frequency dispersion.
Sale price£2,999.00
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A sound as clear and brilliant as starlight

 

Following Zero1, Zero2, and Luna, CLARUS is Astell&Kern's fourth flagship in-ear monitor, and our finest yet. Every product we make begins with a single belief: that sound should be heard exactly as it was meant to be.

From the arrangement of every driver to the final voicing, CLARUS was engineered and tuned to that belief. It was developed and voiced on Astell&Kern reference systems, and tuned together with our flagship SP4000T player, so that what you hear is the true spirit of Astell&Kern.

Named after the star in "Astell," CLARUS was voiced to shine with the same quality a star does — clear, pure, and unwavering. Rather than highlighting one frequency or enhancing another, CLARUS delivers natural clarity evenly across the entire spectrum. It doesn't color the music or draw attention to specific details—it simply lets the recording speak for itself, allowing you to experience the Astell&Kern sound in its purest, most luminous form.

 

9-Driver Tribrid

CLARUS is built on a precisely harmonized 9-driver tribrid architecture that combines a proprietary dynamic driver, seven Sonion balanced armatures, and a silicon MEMS tweeter within a single, coherent system.
Each element was developed for its distinct role and tuned through precise control of phase, pressure, and motion.

Its design reflects the same discipline that governs its form. Every contour, cavity, and circuit exists to serve acoustic integrity. The structure is shaped by performance, the performance defined by structure. Nothing is decorative, nothing is redundant.

Acoustic Architecture

  • Low-Frequency System: Proprietary 9 mm Dynamic Driver + Dual Sonion Balanced Armatures
  • Midrange Array: Three Sonion Balanced Armatures
  • High-Frequency System: Silicon MEMS Tweeter + Dual Sonion Balanced Armatures
  • 6-Way Crossover Network controlling the full 9-driver tribrid architecture

SHELL

CLARUS features a CNC-machined shell crafted from aerospace-grade 6061-T6 aluminum and finished in anodized silver. The main body follows an organic ergonomic form, shaped for natural fit and stable contact within the ear.
Its geometry is engineered for stiffness and resonance control, and the housing is defined by precision machining, structural integrity, and a clean industrial form. The alloy’s low density provides comfort while preserving strength and balance.

FACEPLATE

The shell transitions into a multi-faceted faceplate, where precision-cut planes create depth, contrast, and controlled reflection across the surface.
The anodized silver finish emphasizes the material character of the aluminum, highlighting the sharp geometry of the faceplate and the smooth curvature of the shell.
Every edge, radius, and transition was modeled to direct light and form as one continuous surface.

ERGONOMIC FORM

The shell follows an organic ergonomic form, sculpted for natural fit and stable contact within the ear. Every curve transitions smoothly from the faceted faceplate into the body of the housing.
Machined to precise tolerances, the form balances comfort, isolation, and structural integrity, completing CLARUS as a single continuous industrial statement.

SIX-WAY CROSSOVER

A proprietary six-way crossover network controls the entire tribrid architecture, assigning each driver group a defined operating range within the system.

Each acoustic path is independently filtered and integrated to manage the interaction between the dynamic driver, balanced armatures, and MEMS tweeter. This allows the system to preserve timing, phase behavior, and tonal continuity across overlapping frequency regions.

The result is a 9-driver tribrid architecture that performs as a single acoustic framework rather than a collection of separate driver technologies.

Astell&Kern × Effect Audio

The cable included with CLARUS is a branded premium product — a custom-spec Effect Audio Ares S Lite, from one of the world’s leading specialists in high-end IEM cables.

  • UP-OCC pure copper Litz conductors
  • 24 AWG, four-wire dual geometric design
  • 0.78 mm 2-pin connector

Astell&Kern × AZLA

SednaEarfit SE2000 Ear Tips

The ear tips included with CLARUS are AZLA SednaEarfit SE2000 — made of KCC medical-grade silicone and offered in a full range of six sizes for an optimal, secure fit.

SE2000 is the standard ear-tip series provided with our earphones, maintaining the same KCC medical-grade silicone and a full range of detailed sizes including the standard fit.

 
   

Included in the box

 
  • CLARUS IEMs
  • AK × Effect Audio Cable (custom-spec Ares S Lite; 0.78 mm 2-pin)
  • AK × AZLA SE2000 Ear Tips — 6 sizes (SS / S / MS / M / ML / L)
  • IEM Pouch
  • Cable Holder
  • CLARUS Saffiano Leather Case
whats in the box
General Specifications
Model
CLARUS
Drivers
· 1 × Proprietary 9 mm Dynamic Driver
· 7 × Sonion Balanced Armature Drivers
· 1 × Silicon MEMS Tweeter
Cable
· AK × Effect Audio Cable (custom-spec Ares S Lite)
· UP-OCC Pure Copper Litz Conductors, 24 AWG 4-Wire
· 0.78 mm 2-Pin Connector / Termination: 4.4mm
Materials & Finish
· 6061-T6 Aluminum CNC Chassis, Anodized Silver
· Multi-Faceted Faceplate, CNC-Machined 6061-T6 Aluminum, Anodized Silver
Crossover Design
Six-way
Frequency Response
20 Hz – 20 kHz
Sensitivity
103.9 dB SPL @ 1 kHz
Impedance
9.7 Ω @ 1 kHz