Astell&Kern Stella

Astell&Kern AK Stella are beautifully designed  high-end 12 Driver Quadbrid earphones, hand-made to exacting standards using the finest materials and manufacturing processes.

STELLA is built on a 12-driver quadbrid architecture that unites four transducer technologies 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.

Astell&Kern STELLA is the result of three disciplines guided by a single pursuit of truth in sound.
Astell&Kern represents the precision of modern engineering. VOLK Audio defines the architecture of design and acoustic form. Michael Graves brings the mastery of a five-time GRAMMY Award-winning engineer who understands the line between control and emotion. Led by VOLK founder Jack Vang, whose decade of experience helped shape a generation of in-ear design, the project evolved through exchange and refinement. Each discipline strengthened the others, creating an instrument defined by proportion, balance, and restraint.

Throughout development, the VOLK engineering team worked closely with Astell&Kern to advance both process and performance. New acoustic architectures and driver assemblies were created specifically for STELLA to achieve the precision and tonal balance defined in its target response. These innovations were refined and calibrated through extensive sessions with Michael Graves at Osiris Studio in Los Angeles. Each evaluation focused on tonal accuracy, phase alignment, and spatial coherence, ensuring that every decision served the music itself.

• 12-Driver Quadbrid
• 6-Way Crossover Network
• 5 Precision Sound Tubes

  SHELL

  Machined from aerospace-grade 6061-T6 aluminum and anodized in satin black, the shell forms the structural core of STELLA. It holds every acoustic element in precise alignment, maintaining stability between the driver assemblies and the enclosure. Its geometry is engineered for stiffness and resonance control. Internal mass and surface continuity stabilize the structure, reducing vibration and preserving acoustic accuracy. The alloy’s low density provides comfort while preserving strength and balance.

  

  CENTRAL PLATE

  Machined from 6061-T6 aluminium and finished in satin black, the central plate forms the visual and structural centerpiece of STELLA. Positioned between the shell and the frame, it maintains geometric balance across the assembly. The VOLK and Astell&Kern insignias rest in opposition, each centered within its own field. The constellations surrounding them trace independent paths yet follow the same proportion and order. It is both ornament and structure — the expression of balance and craftsmanship that defines STELLA.

  

  SAPPHIRE CRYSTAL GLASS

  Cut from a single block of optical-grade 9H sapphire crystal glass, the panel completes STELLA’s faceplate assembly, uniting the stainless-steel frame and central plate into a single, sealed structure. The surface is then diamond-polished to eliminate micro-distortion, achieving complete transparency and visual purity. The result is a structural lens of pure sapphire, engineered for rigidity, precision, and continuity of form

  

  FACEPLATE FRAME

  The frame defines the structural boundary between the sapphire glass and the aluminum chassis, machined to micron precision from stainless steel. Each surface is polished to a mirror finish, reflecting the precision of its form and the materials it unites. Beyond structure, it regulates the interface between air and material. The venting architecture built into the frame equalizes internal pressure and suppresses resonance, maintaining balance across the entire acoustic system. Every edge, radius, and transition was modeled to direct light and form as one continuous surface.

  VENT ARCHITECTURE

  Machined into the aluminium shell and stainless-steel frame, the vent system regulates airflow throughout the enclosure. Its geometry equalizes internal pressure, stabilising diaphragm motion and maintaining linear driver response. Each aperture is defined by depth, diameter, and damping profile to balance pressure relief and isolation. This prevents standing waves and suppresses low-frequency bloom while preserving the integrity of the acoustic chamber. The vents function as a unified pressure-control system, ensuring consistency between both channels and completing STELLA’s structural and acoustic equilibrium.

  Specification

• • Driver• 1 × VOLK M9-R 9 mm Dynamic Driver
    • 5 × Sonion Balanced Armature Drivers
    • 2 × VOLK MP-2 Planar Magnetic Drivers
    • 4 × Sonion Electrostatic Tweeters
  • Cable • 23.7 AWG, 4 Core Configuration
    • Hybrid Conductor Array: 5N LCOFC Copper, 4N Silver and 24K Gold
    • 4.4 AEC Balanced Termination
  • Materials & Finish • 6061-T6 Aluminium Chassis, Bead-Blasted and Anodised Satin Black
    • 6061-T6 Aluminium Central Plate, Anodised Satin Black with a Diamond-Cut Mirror Finish Face
    • Sapphire Crystal Glass Panel, 9H
    • 316 Stainless-Steel Faceplate Frame, Mirror Polished
  • CROSSOVER DESIGN six-way
  • Frequency Response 10 Hz – 45 kHz
  • Sensitivity 103.8 dB @ 1 kHz
  • Impedance 7.17 Ω @ 1 kHz

  Components

  · STELLA Earbud L/R
  · Hybrid Conductor Array : 5N LCOFC Copper, 4N Silver and 24K Gold (2pin, 4.4mm)
  · 3 Pairs of Silicone Ear Tips (S/M/L)
  · 3 Pairs of Foam Ear Tips (S/M/L)
  · IEM Pouch
  · Cable Holder
  · Leather Carrying Case x1