Features Push-Pull Electrostatic Driver for Broad Bandwidth

STAX SR-009D employs a push-pull electrostatic sound element with a large round diaphragm shape. The design enables a wide frequency range from 5 Hz to 42 kHz and smooth, distortion-free response across the spectrum, capturing micro details and deep bass texture when paired with a dedicated energiser.

Utilises OPEN-AIR Electrostatic Enclosure for Spacious Imaging

STAX SR-009D’s open-air electrostatic enclosure design allows sound to breathe naturally, offering expansive soundstage characteristics and detailed spatial cues characteristic of high-end electrostatic systems.

Features MLER Technology For Ultra-Low Resonance Detail

STAX SR-009D utilises MLER (Multi-Layer-Electrode) electrostatic driver technology developed from the original SR-009. Multiple stainless steel electrodes bonded at the atomic level create exceptional planarity and minimal resonance. This structure supports rapid diaphragm motion and linear sound transmission, yielding ultra-transparent audio reproduction.

Comes With Detachable Replaceable OFC Cable For Flexibility

STAX SR-009D comes bundled with a detachable, replaceable OFC cable structure standardised across recent STAX designs. The parallel 6-strand, low-capacity wide cable minimises capacitance and maintains signal integrity, while the replaceable format supports future upgrades and easier maintenance.

Crafted With Lightweight Ergonomic Design For Extended Comfort

STAX SR-009D integrates a lightweight injection-moulded unit case with a 10-step adjustable headband for precise fit. Premium earpads using genuine sheep leather and artificial leather surrounds ensure lasting comfort and reduced fatigue during long listening sessions.

Comes With A Protective Aluminium Carry Case

STAX SR-009D features a protective aluminium carrying case that offers durable coverage against impacts, environmental exposure, and wear, preserving the headphone during storage and travel.