AK x Volk Audio Stella IEM

Astell&Kern and Volk Audio Stella unites engineering, design, and artistry into a single instrument built for mastering accuracy and captivating musical emotion.

STELLA

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. 

LF-H VOLK LOW FREQUENCY HYBRID SYSTEM

The VOLK Low-Frequency Hybrid System (LF-H) anchors STELLA’s multi-stage architecture, combining the M9-R 9 mm subwoofer with dual balanced armatures in a dual-stage chamber tuned to control phase and resonance. The chamber geometry, alignment, and crossover are co-developed to preserve phase accuracy and pressure balance. Covering 20 to 600 Hz, the LF-H forms the foundation of STELLA’s weight, control, and overall balance.

MID-RANGE ARCHITECTURE

STELLA’s midrange centers on a tri-armature array tuned for natural tone and balanced presence. Dual balanced-armature drivers cover 600 Hz to 7 kHz, delivering warmth, articulation, and vocal energy with added density in the critical 1–5 kHz range, seamlessly bridging the lows and highs.

A single upper armature extends from 6 to 15 kHz, reinforcing upper-mid harmonics and refining vocal and instrumental overtones. Its lightweight diaphragm and fast transients preserve clarity and texture while integrating precisely with the planar and electrostatic systems above for smooth spectral linearity.

HF-H HIGH-FREQUENCY HYBRID SYSTEM

The VOLK High-Frequency Hybrid System (HF-H) defines STELLA’s upper range by combining MP-2 dual planar magnetic drivers with four electrostatic tweeters in a unified design. Its crossover and acoustic topology are co-engineered to preserve phase accuracy and tonal stability, allowing the planars to shape upper harmonics with control while the electrostatics extend bandwidth and atmosphere with speed and finesse.
Covering 9 to 45 kHz, the HF-H delivers coherent, ultra-high-frequency extension with authority and refinement.

EXCEPTIONAL MATERIALS

Shell:
Machined from aerospace-grade 6061-T6 aluminum and anodized in satin black, the shell holds every acoustic element in precise alignment, maintaining stability between the driver assemblies and the enclosure.

Central Plate:
Machined from 6061-T6 aluminum and finished in satin black, the central plate forms the visual and structural centerpiece of 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.

Faceplate Frame:
The frame defines the structural boundary between the sapphire glass and the aluminum chassis, machined to micron precision from stainless steel. The venting architecture built into the frame equalizes internal pressure and suppresses resonance, maintaining balance across the entire acoustic system.

CROSSOVER DESIGN

Stella features a proprietary six-way network that preserves phase integrity and synergy across all driver groups. Each acoustic path is filtered and time-aligned to maintain spatial coherence and tonal stability through the full frequency spectrum.

CABLE CRAFTED FOR PERFECTION

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.