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The Letshuoer Astralis are planar magnetic in-ear monitors designed to deliver precise and responsive sound reproduction. They feature a 15.5mm driver combined with a balanced magnetic architecture, allowing for precise control of the diaphragm’s movement to maintain linear reproduction across the entire frequency range.
The Astralis features a 15.5mm planar magnetic driver, whose circular diaphragm ensures uniform air displacement, thereby delivering a fast transient response and extended reproduction. This design is complemented by a voice coil positioned on either side of the diaphragm, allowing for a symmetrical distribution of electromagnetic force, whilst two sets of four N52 magnets stabilise the magnetic flux to maintain linear control of the movement, thereby reducing distortion at high volumes.


The Astralis come with a silver-plated copper cable, which optimises conductivity whilst minimising high-frequency signal loss. This design is complemented by an interchangeable 3.5 mm or 4.4 mm termination, allowing the earphones to be easily adapted to different sources without the need for an adapter.
Technical characteristics
| Specifications | |
|---|---|
| Product type | In-ear monitors (IEM) |
| Drivers | Planar magnetic |
| Impedance | 20Ω |
| Sensitivity | 104dB |
| Frequency response | 20Hz-40kHz |
| Chassis materials | Aluminum |
| Earphone connectors | CIEM 0.78mm 2 pins |
| Cable termination | Jack 3.5mm Jack 4.4mm |
| Cable materials | Silver-plated copper |
| General | |
|---|---|
| Color | Silver |
| Package | 1x Letshuoer Astralis 1x Storage box 1x Earphone cable 1x 3.5mm jack termination 1x 4.4mm jack termination 5x Pairs of ear tips |
| Color | Silver |
| Impedance (Ω) | 20 |
| Efficiency / Sensitivity (dB) | 104.0 |
| Wireless | No |
| Cable termination | Jack 3.5mm |
| Cable termination | Jack 4.4mm |
| Headphone / Earphone connector | CIEM |
| Phone call feature | No |
| Noise reduction | No |