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Astralis features LETSHUOER’s 5th generation proprietary Ring Type planar diaphragm driver. This unit represents a comprehensive restructuring and optimization of traditional planar architecture.
By replacing the conventional square driver with a circular one, the design achieved optimal acoustic properties. This breakthrough delivers deeper low-frequency extension and rapid transient response, resulting in an immersive and richly layered listening experience.
LETSHUOER employs a direct solder design for the voice coil circuitry on this planar driver. This structure effectively minimizes impedance, ensuring direct and highly efficient signal transmission. The process makes the driver less prone to oxidation, which not only enhances acoustic performance but also significantly extends the component's lifespan. From structural engineering to craftsmanship, this design elevates the fundamental capabilities of the sound.
Astralis features a CNC-machined aluminum housing that provides a rigid foundation for acoustic stability. Ergonomically optimized to contour the ear, it ensures a lightweight and secure fit. The faceplate is accented with a blue star which symbolizes the focused energy of the annular planar driver.

The Astralis comes standard with a 216-strand high-purity SPC cable, precision-engineered to ensure signal purity and stability. The supple, soft-to-touch sleeve offers a delicate tactile feel while providing exceptional durability. From the core conductor to the outer insulation, every detail is meticulously optimized for acoustic transparency, allowing signal to flow with absolute clarity.

The Astralis comes standard with 3.5mm and 4.4mm interchangeable plugs. Combined with its 0.78mm 2-pin structure, it offers broad compatibility across a wide range of source devices. From the plugs to the pins, every element is crafted with rigorous precision to ensure efficient, clean, and stable signal transmission.
Amazingh value, for the price... But also for higher priced IEMs. They're on a more relaxed side. Wich doesn't mean "boring", no, which mean longer listening sessions, confort. Great soundstage, not overly-piercing-agressive details, just details. Rich sound. Warm and pretty cozy sound. Enough of the meta agressive tuning. Astralis want you to take pleasure in listening to your music.
This is my first planar IEMs, I always was mefiant of the harsch side of planar. Not here.
I take those over ISN EST80, Soundrhyme DT900E, Ruviest Nyx... Which are way more expensive.
Little shells, they disappear. I have "normal" size ears.
I tried them with different kinds of music. Extreme music (grind/death/black...), electro, dark ambient, rock, accoustic. Great stuff!!!
Remember that sound is subjective. But this a wondeful surprise.
Firdt pair of IEMS ive owned and let me say the upgrade is WORTH IT! Having such a good time listening to my favorite songs for the first time all over again. Definitely worth the money!
Finally made the switch to IEM's with a local FLAC libary and music just finally feels alive. Wireless earbuds sound so muffled and mushy compared to these IEM's. You get your money's worth, if not more.
LETSHUOER Astralis HiFi In-Ear Earphones 15.5mm 5th-Generation proprietary Ring-Type planar diaphragm driver
Supreme sound quality.