Meze Audio ASTRU High-Performance Dynamic IEM Earphones

ASTRU High-Performance Single Dynamic Driver IEM Earphones, by Meze Audio.

Released in March 2026, ASTRU by Meze Audio is more than an in-ear monitor - it is a statement piece: full-titanium, visceral sound, single dynamic. Simplicity raised to the highest level of performance.

Delivering a punchy, full-bodied, and rich, detailed sound, ASTRU combines the layering and imaging associated with multi-driver IEMs with the tonal density and natural warmth dynamic drivers provide, all within a cohesive, unified presentation.

Natural and powerful, ASTRU sounds dense, immersive, and engaging, creating a realistic, impactful, and all-encompassing presentation. Embark on a journey beyond listening into a realm where music becomes palpable.

Unique to the core, ASTRU is powered by a high-performance single dynamic driver featuring a multilayer metal-coated composite diaphragm, engineered for exceptional control and refinement.

The diaphragm dome consists of an outer gold coating applied in 80 ultra-thin layers via physical vacuum DC magnetron sputtering over a 48-hour process, followed by a titanium layer bonded to a PEEK dome base. This multi-stage architecture delivers smoother high frequencies, greater extension, and more natural transient response.

The rear vent ensures equal pressure between the driver's back cavity and the exterior, allowing unrestricted low-frequency driver excursion for extended sub-bass and bass output (below 200 Hz), while continuously relieving ear canal pressure for fatigue-free, long-term listening.

Building on the ergonomic foundations set by the ADVAR and the ALBA, ASTRU maps to the natural contours of your ear with unprecedented precision - no pressure, no hotspots, only you and the music.

The shell geometry has been refined even further: every curve finished to perfection, every surface optimized for the kind of long-term comfort that makes the shell disappear from awareness.

The included 1.2 m (3.9 ft) cable features silver-plated Linear Crystal Oxygen-Free Copper (LC-OFC) conductors arranged in a dual-strand configuration, with 161 individual conductors per strand. Insulated in SoftFlex PVC for enhanced comfort and flexibility, the cable incorporates CNC-anodized aluminum housings and a gold-plated 4.4 mm balanced termination.

The construction is optimized for low resistance, signal integrity, long-term durability, and seamless compatibility with high-end portable sources.

Features

• High-performance single dynamic driver with multi-driver resolution, delivering visceral, full-bodied, highly detailed sound
• Precision-engineered titanium chassis with electroplated nickel wax guard
• Dual-strand cable with silver-plated LC-OFC conductors and SoftFlex PVC coating
• Made from pure titanium and electroplated nickel, with a satin finish
• Custom designed liquid silicone ear tips

Specifications

• Driver Type: Dynamic
• Driver Size: 10 mm
• Frequency Range: 5 Hz - 35 kHz
• Impedance: 32 Ω
• Sensitivity: 111 dB SPL/mW @ 1 kHz
• Input Connector: 2-Pin
• Total Harmonic Distortion: <0.1 % @ 1 kHz
• Weight: 13.4 g / 0.47 oz (without cables)

Included

• ASTRU IEM Earphones
• 5 sizes of ear tips (XS, S, M, L, XL) with wax guard
• 2 carrying solutions – 1 x protective pouch, and 1 x soft PU leather envelope
• Premium dual 2-pin balanced cable with CNC-anodized aluminium hardware and gold-plated 4.4 mm balanced termination
• 4.4 mm to 3.5 mm adapter

More Information

• ASTRU Single-Driver Dynamic IEM Earphones, by Meze Audio