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The Meze Audio Astru are dynamic in-ear monitors equipped with a high-performance 10mm driver. This driver is integrated into a titanium chassis with electrolytic nickel plating for outstanding durability. The Meze Audio Astru IEMs deliver a rich sound reproduction thanks to their extended frequency response of 5Hz-35kHz, offering deep bass along with clear and precise mids and highs. They are supplied with a high-end CIEM 0.78mm cable with a balanced 4.4mm jack termination featuring silver-plated OFC copper conductors for impeccable conductivity. A 4.4mm to 3.5mm jack adapter is also included to extend the compatibility of the Meze Audio Astru.
The Astru IEMs rely on a single 10mm dynamic driver per earpiece designed to deliver precise and fast sound reproduction. It features a composite diaphragm with a multi-layer metallic coating created through a complex manufacturing process. The driver dome benefits in particular from gold plating made of 80 ultra-thin layers deposited by DC magnetron sputtering in a vacuum during a 48-hour production cycle, ensuring excellent diaphragm control and exceptionally fast transient response. The diaphragm also adopts a hybrid structure combining titanium and PEEK polymer, a combination that provides an optimal balance between structural rigidity, movement speed, and resonance control. Finally, the design is completed by a high-precision magnetic architecture composed of a ventilated rear plate, internal and external annular magnets, and a front magnetic separator, ensuring controlled driver excursion and excellent dynamic linearity across the entire sound spectrum.


The Astru are supplied with a high-fidelity balanced cable featuring a 4.4mm jack termination, designed to guarantee extremely pure audio signal transmission. It uses silver-plated LC-OFC copper conductors, with each strand composed of 161 conductors in order to optimize conductivity and reduce resistance. The assembly benefits from SoftFlex PVC insulation ensuring both flexibility and durability during use. The cable’s mechanical parts are made of CNC-machined aluminum with an anodized finish, providing robustness and high manufacturing quality. Finally, the gold-plated 4.4mm balanced jack termination ensures excellent conductivity and perfect compatibility with high-end portable audio sources and headphone amplifiers equipped with a balanced output.
These in-ear monitors have been designed to provide optimal comfort during long listening sessions while ensuring excellent durability. Their shell is CNC-machined from a single block of pure titanium, a material known for its strength, light weight, and corrosion resistance. This design allows the earphones to maintain a particularly low weight of approximately 13.4 g, contributing to stable and comfortable wear. Their electro-deposited satin finish relies on a multi-layer electroplating process that ensures an elegant appearance and long-lasting durability. In order to preserve acoustic performance while effectively protecting internal components, the Astru also integrates a nickel protective grille designed to ensure excellent longevity without compromising sound clarity.
Technical specifications
| Specifications | |
|---|---|
| Product type | In-ear monitors |
| Driver type | Dynamic Ø10mm |
| Impedance | 32 ohms |
| Sensitivity | 111dB SPL/mW @ 1kHz |
| Frequency response | 5Hz-35kHz |
| THD | < 0.1% @ 1kHz |
| Shell material | Pure titanium and electroplated nickel |
| Detachable cable | |
| Earphone connectors | CIEM 0.78mm |
| Cable termination | Balanced 4.4mm jack |
| Cable conductor material | Silver-plated LC-OFC copper |
| Cable insulation | SoftFlex PVC |
| Cable length | 1.2m |
| General | |
|---|---|
| Weight | 13.4g (without cable) |
| Color | Grey |
| Package contents | 1x Meze Audio Astru 1x Detachable CIEM 0.78mm to balanced 4.4mm cable 1x 4.4mm to 3.5mm jack adapter 5x Pair of ear tips 2x Storage pouches |
| Color | Silver |
| Impedance (Ω) | 32 |
| Efficiency / Sensitivity (dB) | 111 |
| Wireless | No |
| Cable termination | Jack 4.4mm |
| Headphone / Earphone connector | CIEM |
| Phone call feature | No |
| Noise reduction | No |