Description
Meze Audio Astru
Meze Audio Astru is an brilliant single driver audiophile in ear monitor, offering high performance and real value for money for a high-end earphone.
ASTRU 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.
Astru delivers a punchy, full-bodied, and rich, detailed sound – combining 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.
Driver Technology
At the core of ASTRU is an advanced multilayer composite dynamic driver diaphragm, engineered to balance speed, control, and musical weight.
The diaphragm dome features over 80 ultra-thin layers of gold, applied during a 48-hour physical vacuum DC magnetron sputtering process, then bonded to a titanium layer and finally mounted on a PEEK base.
This carefully tuned structure delivers fast transient response, smooth and extended treble, and the natural warmth and physical impact that dynamic drivers are celebrated for.
Design
ASTRU’s housing reflects Meze Audio’s commitment to comfort and craftsmanship. ASTRU’s shell geometry has been painstakingly refined for improved long-term comfort. Each shell is CNC-machined from a single block of pure titanium, then refined through a multi-stage electroplating process to achieve a smooth satin finish.
Machined from a solid block of titanium, each matched pair of shells requires up to seven days of precision processing, underscoring the attention to detail behind every unit.
ASTRU features a 10mm dynamic driver, a 5Hz–35kHz frequency range, 32-ohm impedance, and 111dB sensitivity. Total harmonic distortion is listed below 0.1% at 1kHz.
Breathe…
The rear vent equalises 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.
Comfort…
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.
Quality Cable
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 optimised for low resistance, signal integrity, long-term durability, and seamless compatibility with high-end portable sources.
Liquid Silicon Eartips
To fully experience the detail and bass response, achieving a proper seal is essential. ASTRU includes five pairs of custom-made liquid silicone ear tips, designed for superior comfort and effective passive noise isolation. Available in XS, S, M, L, and XL sizes.
Specifications:
Sensitivity: 111 dB SPL/mW at 1 kHz
Input Connector: 2-pin
Total Harmonic Distortion: <0.1% at 1 kHz
Weight: 13,4 g (0,47 oz)
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