CLARUS is Astell&Kern's new flagship in-ear monitor.
built on a precisely harmonized 9-driver tribrid architecture. With a proprietary six-way crossover and a
precision-machined aluminum housing working as one; it delivers pure, high-resolution sound with detail and
balance across the entire frequency range.
CLARUS unites three transducer technologies and a precision-machined housing into one coherent system:
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.
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.
Every driver operates within its natural range, contributing its character without interference. No
forced equalization. No artificial enhancement. Only precision through purpose.
Bass and lower midrange are driven by a three-driver hybrid low-frequency system,
combining a proprietary 9 mm dynamic driver with a dual Sonion balanced armature array.
The 9 mm dynamic driver operates from 20–200 Hz, delivering sub-bass depth, extension, and natural
physical weight. The dual Sonion armature array operates from 80–500 Hz, reinforcing speed,
articulation, and structural definition through the upper bass and lower midrange.
All three drivers are housed within a shared pressure-coupled chamber, allowing air movement,
acoustic
pressure, and crossover behavior to be controlled as one integrated low-frequency system.
Core midrange and presence are handled by a three-driver Sonion balanced armature array,
tuned for tonal balance and natural presence.
A dual Sonion midrange armature operates from 500 Hz to 2 kHz, shaping vocal body, tonal density,
and natural midrange weight.
A dedicated Sonion balanced armature operates from 800 Hz to 7 kHz, extending clarity, harmonic
structure, and presence-region definition. Together, the midrange array maintains continuity from
lower mids into upper mids, preserving vocal placement, instrumental separation, and articulation
through the center of the frequency range.
The high-frequency system pairs a top-firing silicon MEMS tweeter with two Sonion
high-frequency balanced armatures, creating a hybrid treble section designed for speed, output, and
extension.
Within CLARUS, the MEMS tweeter operates from 7–10 kHz, bringing semiconductor-level precision to
the upper registers. Its monolithic silicon structure delivers exceptional speed, phase stability,
and part-to-part consistency, producing fine detail with a level of focus and control beyond
conventional driver designs.
The paired Sonion high-frequency armatures operate from 9–15 kHz, with response extending to 20 kHz,
reinforcing treble output, air, intelligibility, and spatial extension while maintaining low
distortion across the upper registers.
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.
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.
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.
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.
PREMIUM COMPONENTS — CABLE
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.
PREMIUM COMPONENTS — 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.
