Astell & Kern / STELLA IRV-AK-STELLA

＜＜Feb 2026 New Product！＞＞ This limited-edition quad-brid 12-driver IEM brings together the combined expertise of Astell&Kern, VOLK AUDIO, and five-time Grammy Award-winning engineer Michael Graves. Pursuing the truth of sound, the unique hybrid system achieves precise tonal balance and stunning spatial consistency.

■ 12-Driver Quad Hybrid Configuration
・ Four different transducer technologies are combined into a single system. Dynamic, BA, planar magnetic, and electrostatic drivers are driven with precisely controlled phase, pressure, and operation. Each element's inherent characteristics are fully realized within its natural range, resulting in extremely pure and precise sound reproduction without artificial accentuation.

■ Unique LF-H Low-Frequency Hybrid
・ A 9mm dynamic and dual BA are integrated into a unique dual-stage chamber that controls resonance. The dynamic driver creates deep depth and power, while the BA adds a sense of speed and detailed texture. The 20Hz to 600Hz frequency range combines impressive weight with precise control, creating a solid foundation for the overall sound.

■ Precision-Designed Midrange Architecture
・ Three BAs are optimally positioned to achieve a natural sense of presence. The design prioritizes energy in the 1kHz to 5kHz range, enhancing the warmth and clarity of vocals. Layered BAs enhance mid- and high-frequency harmonics, providing a quiet, precise connection from low to high frequencies, maintaining a clear, linear sound across the entire frequency range.

■ Top-of-the-line HF-H High-Frequency Hybrid
- This system incorporates the pinnacle of technology, integrating a unique dual planar magnetic driver with four electrostatic tweeters. The planar magnetics precisely shape harmonics, while the electrostatics expand the sense of atmosphere with an astounding sense of speed. Maintaining distortion-free consistency and clarity across an ultra-wide frequency range from 9 kHz to 45 kHz, it brings a majestic, refined brilliance to the acoustic space.

■ Precise 6-way Crossover
- A unique 6-way network is used to maintain perfect phase consistency between all driver groups. Each acoustic path is rigorously filtered and time-aligned. This maintains spatial consistency and tonal stability across the entire frequency range, achieving a natural connection that is reminiscent of a single driver.

■ Advanced Vent Architecture
- A precision vent system within the housing regulates internal airflow. The geometric shape equalizes internal pressure and stabilizes diaphragm movement, suppressing standing waves and unnecessary low-frequency expansion. This maintains the driver's linear response, achieving high consistency between left and right channels and distortion-free acoustic balance at a high level.

■ Aerospace-Grade Housing Material
・ The shell is machined from aerospace-grade 6061-T6 aluminum with a satin black finish. Its high rigidity and resonance-control characteristics maximize the stability of the driver assembly. Thoroughly reducing unwanted vibrations maintains acoustic precision, while the lightweight alloy material provides a comfortable fit even during extended use.

■ 9H Sapphire Crystal Glass
・ The faceplate features a panel cut from a single block of optical-grade 9H sapphire crystal. Diamond polishing eliminates micro-distortion for visual purity. The highly rigid structure, integrated with the stainless steel frame, not only enhances aesthetics but also enhances the enclosure's airtightness, providing robust protection for the precision acoustic system inside.

■ Specially tuned 4-core premium cable
・ A 23.7 AWG hybrid cable has been specially designed to maximize the potential of STELLA. The conductor arrangement combines 5N copper, 4N silver, and 24K gold to minimize signal transmission loss and ensure linearity across the entire frequency range. The 4.4mm balanced connection delivers a pure, uninterrupted audio experience to every corner.

■ Comprehensive range of premium accessories
・ In addition to silicone ear tips for excellent sound balance and foam ear tips with excellent sound insulation, the product also includes a luxurious original leather case. Furthermore, a full range of accessories befitting a premium product, such as an IEM pouch, cleaning cloth, and cable holder, will enhance the joy of ownership and support a comfortable everyday listening environment.

Specifications

Product Name: STELLA

Driver Configuration (12 Drivers per Side): 1DD + 5BA + 2PD + 4EST

Type: Closed-back

Housing Material: 6061-T6 Aluminum, 316L Stainless Steel, 9H Sapphire Crystal

Frequency Response: 10Hz - 45KHz

Sensitivity: 103.8dB @ 1KHz

Impedance: 7.17Ω @ 1KHz

Crossover: 6-way

Connector: 2-pin (0.78mm)

Cable: 4-core hybrid conductor (5N LC-OFC copper/4N silver/24K gold), 4.4mm balanced plug

Accessories: Leather carrying case, IEM protective pouch, cable holder, various earpieces, cleaning cloth