AüR Audio has once again pushed the boundaries of audio technology with our latest offering, Astra. This innovative pair of IEM boasts a cutting-edge nine-driver Quadbrid configuration in each side, representing a significant leap forward in the industry.
 
The sophisticated driver arrangement comprises 2 x 7.5mm dynamic drivers for deep punchy bass response, dual balanced armature unit for detailed mids and highs, one 12mm piezoeletric frequency shifting Bone conductor and four of miniature planar magnetic drivers to deliver exceptional clarity and accuracy sound. This carefully selected combination of drivers is expertly tuned by Abel Hsu, resulting in a clean, crisp, and highly refined sound reproduction that audiophiles are sure to appreciate.
 
Astra introduce a revolutionary implementation four brand-new miniature planar magnetic treble drivers on each side. This design choice elevates performance beyond traditional balanced armatures. The result is a superior listening experience characterized by lower distortion, a wealth of nuanced detail, and a remarkably smooth treble response. 
 
The frequency shifting piezoelectric bone conduction driver represents a significant advancement in audio technology, meticulously engineered to deliver sound within the optimal hearing range of human ears.The driver achieves increased stability and a more comfortable vibration sensation for the user, setting a new standard for bone conduction audio experiences.

Configuration information of :
 
• 2DD: Dual Opposed 7.5mm pu+peek DD with N52 magnet
• One Sided 12mm Full range Piezoelectric Bone Conductor
• 2BA: Customized Mid High Dual BA
• 4 Miniature Treble Planar Driver
 
GENERAL SPECIFICATIONS
 
Frequency Response: 20 Hz - 35 kHz
Impedance: 10Ω at 1 kHz
Sensitivity: 106dB (@130mV)
Total Harmonic Distortion: <1% (@130mV)
 
HOUSING MATERIALShell: 3D Printed Resin
 
In the Box
AüR Audio Astra IEMs
IEM Cable
PVC Carry case
Ear tips (x3) pairs (S, M, L)