Embark on a Sonic Journey with Asteria, the Radiant Second Release From 7th Acoustics, Following the Success of Supernova

Limited run of 77 units!
Features a 10mm High-Magnetic Flux Dynamic Driver with BalanceFlow double venting technology
(12x) Ultra-Low Distortion Next-Gen Knowles Balanced Armature Drivers
Proprietary Extreme Xover Performance (EXP) achieves acoustic precision
CNC aluminum housing with gold ceramic coating and unique inlaid iridescent blue morpho faceplate
Includes bespoke LYRA pure silver cable exclusively tuned for Asteria

Bloom's Take

The 7th Acoustics Asteria is a striking 13-driver hybrid flagship that pairs bold design with equally bold sound. Its CNC aluminum shell, gold ceramic finish, and iridescent blue faceplate make it visually unforgettable, while the pure-silver cable underscores its premium build.

Asteria’s tuning leans V-shaped, delivering deep, authoritative bass, crisp mids, and bright, energetic treble. It balances impact and precision, with excellent imaging and a wide, holographic stage. Though it benefits from a powerful source, its dynamic, lively character shines through regardless.

For listeners who crave energy, clarity, and excitement over a laid-back presentation, the Asteria is a unique flagship that dares to sound and look different.

Read our full review.

7th Acoustics Newest Flagship IEM

After two years of tireless research and development by 7th Acoustics co-founder and chief engineer, Stephen Syn, they are proud to present their magnum opus: Asteria. This game-changing flagship IEM represents the culmination of their pursuit for sonic perfection.

Driver Design

Asteria is the embodiment of audio artistry, featuring cutting-edge innovation. At its core lies a 10mm bespoke dynamic driver with high magnetic flux and BalanceFlow double venting technology, delivering powerful yet controlled low-end response.

Complementing this is a symphony of twelve next-generation, ultra low-distortion Knowles balanced armature drivers—each orchestrated through 7th Acoustics' proprietary Extreme Xover Performance (EXP) crossover system to ensure perfect coherency and acoustic balance across the spectrum.

Drawing inspiration from horn-loaded speakers, Enhanced Clarity Horn Outlet (ECHO) technology elevates treble performance, offering crisp, lifelike detail and spatial brilliance in the upper registers.

Extreme Xover Performance

EXP is 7th Acoustics' in-house proprietary crossover technology, featuring a true higher-order crossover design to ensure perfect coherency and seamless transition between various drivers with minimum cancellation and phase mismatch. Each group of drivers is tuned meticulously to match their phase with the previous and next group of drivers. Utilizing the highest quality capacitors and resistors, EXP ensures a very low distortion and high driving efficiency without compromise.

7th Acoustics Asteria right IEM closeup attached to cable on black table with vinyl record and headphone amp

BalanceFlow Vent

BalanceFlow is 7th Acoustics' proprietary approach to regulate the pressure waves generated by the dynamic driver to maximize dynamics while keeping extremely low distortion levels. The dual ports deliver superb technical performance while avoiding common pitfalls such as driver flex and pressure build-up while worn. BalanceFlow adapts dynamically to the demands of the music track, giving a detailed texture, powerful punch, and yet maintaining a tight control over the driver.

Enhanced Clarity Horn Outlet

ECHO is 7th Acoustics treble acoustic technology to control and push the supertweeter capabilities to its absolute limit. Unlike a conventional acoustic tube, ECHO mimics horn loudspeakers to enhance the efficiency of the driver, especially in the higher frequency ranges. This allows the treble region to be more crisp and well-extended without sounding unnatural or shrill.

Elegant Faceplate

Housed in a medical-grade resin shell with CNC-machined 7075 aluminum and finished with a luxurious gold ceramic coating, Asteria is as stunning as it is sonically advanced. Its faceplate, inlaid with an iridescent Blue Morpho butterfly design, evokes a sense of elegance and mystique.

Exclusively Tuned Cable

To complete the experience, Asteria comes paired with a bespoke reference-grade pure silver cable from Astral Acoustics, tuned exclusively to unlock its full sonic potential.

Specifications

Driver
- 10mm Dynamic driver
- (x6) Midrange Balanced Armature drivers
- (x2) Upper Midrange Balanced Armature drivers
- (x2) Tweeter Balanced Armature drivers
- (x2) Supertweeter Balanced Armature drivers
Wiring: 6N OCC Gold Plated Copper & Estron Silver-Plated Litz
Components: Top-of-the-Line Resistor & Inductor
Solder: Oyaide Tin Solder
Connector: Spring-Loaded Gold Plated 0.78mm 2pins
Lyra Cable
- Material: 4N OCC Pure Silver
- Structure: 4-core 23.5AWG, Type 6 Concentric Litz
- Jacket: Ultrasoft PVC
- Hardware: Full Ceramic-coated brass
- Solder: Custom blend tin solder
- Connector: Oyaide 2-pin
- Plug: Furutech 4.4mm

In the Box

7th Acoustics Asteria IEMs
LYRA cable
4.4mm to 3.5mm adapter
Microfiber cloth
IEM cleaning brush
Stickers
Genuine Stingray leather carrying case + cable clip
Ear tips

7th Acoustics Asteria IEMs coiled in lyra cable sitting on wooden plant on grey couch with stingray case and cable clip

7th Acoustics

7th Acoustics Supernova | Balanced Armature IEMs

7th Acoustics Asteria | Hybrid Universal IEMs