AüR Audio Astra
 
A New Era in IEM Innovation
 
With Astra, AüR Audio breaks new ground in the world of IEMs. Featuring the world’s first nine-driver Quadbrid configuration per side, Astra is a true technological milestone—crafted for discerning audiophiles who demand cutting-edge performance without compromise.
At the heart of Astra lies a revolutionary blend of dynamic, balanced armature, planar magnetic, and piezoelectric bone conduction drivers, meticulously tuned to deliver an ultra-refined, immersive sonic experience across the full frequency spectrum.
 
Key Features
 
🎧 World-First Quadbrid 9-Driver Design
 
Each earpiece houses a carefully engineered combination of 2 dynamic drivers, 2 balanced armatures, 4 miniature planar magnetics, and a 12mm bone conduction driver—delivering a uniquely rich, detailed, and expansive sound.
 
🔊 Dual 7.5mm Dynamic Drivers (PU+PEEK Diaphragms)
 
Positioned in opposing configurations and driven by powerful N52 magnets, these drivers create tight, responsive bass with physical impact and excellent layering.
 
🦴 12mm Piezoelectric Bone Conduction Driver
 
Unlike conventional designs, Astra’s full-range frequency-shifting bone conductor operates within the optimal human auditory range, offering natural, stable vibrations and unprecedented comfort.
 
🔉 Dual Custom-Tuned Balanced Armature Drivers
 
Precisely calibrated for smooth mid and upper-mid transitions, these BA drivers deliver lush vocals, articulate instruments, and vivid imaging.
 
⚡ Quad Miniature Planar Magnetic Drivers (Treble)
 
Astra debuts an all-new implementation of four planar treble drivers per side—raising the bar for high-frequency reproduction. Expect stunning treble extension, zero harshness, and ultra-low distortion.
 
Sound Profile
 
Bass: Deep, punchy, fast
 
Mids: Natural, clean, resolving
 
Treble: Smooth, airy, highly detailed
 
Presentation: Wide soundstage, precise imaging, immersive layering
 
 
 
Driver Configuration
 
2DD: Dual 7.5mm PU+PEEK Dynamic Drivers (N52 magnet, opposed configuration)
 
1 Bone Conduction: 12mm Piezoelectric Frequency-Shifting Full-Range
 
2BA: Custom Dual Mid-High Balanced Armatures
 
4 Planar Magnetic Drivers: Miniature Planar Array (Treble)
 
 
 
Specifications
 
Frequency Response: 20 Hz – 35 kHz
 
Impedance: 10Ω at 1 kHz
 
Sensitivity: 106 dB at 130 mV
 
 
Total Harmonic Distortion: 1% @ 130 mV
 
Shell Material: 3D Printed Medical-Grade Resin
 
 
 
In the Box
 
AüR Audio Astra IEM
 
Premium IEM Cable
 
Leather Carrying Case
 
3 Pairs of Silicone Ear Tips (S, M, L)
 
 
 
Ideal For
 
Audiophiles and enthusiasts seeking cutting-edge audio performance with a focus on speed, clarity, realism, and comfort—perfect for all genres, from cinematic soundtracks to high-energy electronic music.