Astell & Kern Stella In Ear Monitors

Description

Stella is a collaboration between Volk and A&K. 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.

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.

The VOLK Low-Frequency Hybrid System (LF-H) serves as the starting point of STELLA’s multi-stage architecture, combining VOLK’s M9-R 9 mm subwoofer and dual balanced armatures within a dual-stage chamber designed to regulate phase and resonance.
The chamber’s geometry, alignment, and crossover were co-developed to maintain phase accuracy and pressure balance between both stages. This coordination allows the dynamic driver to deliver depth and force while the armatures add speed, texture, and tonal structure across the lower band. Operating from 20 to 600 Hz, the LF-H establishes a foundation of weight and control that defines STELLA’s composure and balance.

STELLA’s midrange is formed around a tri-armature array tuned for tonal balance and natural presence.The dual balanced-armature drivers operate from 600 Hz to 7 kHz, voiced for energy and density in the 1–5 kHz range. They deliver warmth, articulation, and a vocal character that connects the low and high ranges with quiet precision.
Above them, a single armature extends from 6 to 15 kHz, overlapping to reinforce upper-mid harmonics and refine vocal and instrumental overtones. Its lightweight diaphragm and quick transient response preserve clarity and texture while integrating precisely with the planar and electrostatic systems above, maintaining linearity across the spectrum.

The VOLK High-Frequency Hybrid System (HF-H) defines the upper range of STELLA’s architecture, combining VOLK’s MP-2 dual planar magnetic drivers with four electrostatic tweeters in a unified system. The crossover and acoustic topology were co-engineered to preserve phase accuracy and tonal stability across the transition between the planar and electrostatic assemblies. This balance allows the planars to shape upper harmonics with precision and control while the electrostatics extend bandwidth and atmosphere with speed and composure. Operating from 9 to 45 kHz, the HF-H maintains coherence and clarity at the limits of extension, completing STELLA’s spectrum with authority and refinement.

Designed as an integral part of STELLA’s acoustic system, the cable preserves signal integrity and linearity across the full range, maintaining equilibrium between structure and sound.

• 23.7 AWG, 4 Core Configuration
• Hybrid Conductor Array: 5N LCOFC Copper, 4N Silver and 24K Gold
• 12-Strand Litz Type 4S Geometry
• 500D Macro-Molecular Fiber Reinforcement Core
• SoftFlex PVC Insulation
• Midnight Black Braided Nylon Outer Jacket
• 6061-T6 Anodized Black Hardware with 316 Stainless Steel Mirror Polished Accents
• 4.4 AEC Balanced Termination

Specifications:

• • Model

    STELLA

  • 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 Aluminum Chassis, Bead-Blasted and Anodized Satin Black
    • 6061-T6 Aluminum Central Plate, Anodized 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
    

  • Components

    STELLA Earbud, 4.4mm Balanced Cable, Silicone Ear Tips, Foam Ear Tips, IEM Pouch, Cable Holder, Leather Carrying Case

  • Frequency Response

    10 Hz – 45 kHz

  • Sensitivity

    103.8 dB @ 1 kHz

  • Impedance

    7.17 Ω @ 1 kHz

   

  Includes:

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