Symphonium Audio Crimson Flagship IEM

The next standard.

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The Crimson has a bold and captivating sound profile with an incredibly dynamic bass presentation, reminiscent of high-end speaker configurations. The inclusion of PHAT technology allows the Crimson to build on Symphonium's signature treble response.

Crimson's treble is not only smooth but also well extended, offering class-leading resolution with a layered and spacious stereo image. With organic vocals, impeccable control and authority on the low end, the Crimson mimics the experience of standing in front of a live stage.

The combination of these characteristics makes the Crimson dynamically engaging and uniquely captivating to listen to.

Rediscover your love for music again!


Featuring a combination of our finest technologies, the Crimson boasts a fusion of both PHAT and FLAT advancements.

With PHAT technology ensuring no unnecessary frequency inversions or phase cancellation and FLAT technology ensuring low impedance and immunity from impedance mismatch - the Crimson is ready to take on any challenge thrown it's way.

Refined Shell Design with Forged Carbon Faceplate

A different design language means a different look.

The Crimson proudly presents a redesigned shell, refined through extensive community feedback. The shell is now thoughtfully shaped to comfortably fit smaller ears, featuring a shorter nozzle and a gently rounded form.

The outcome is an IEM that rests snugly against the ears, ensuring a seamless fit. Made from the same high-grade T6 heat-treated AL6061 Aluminium alloy, the Crimson is engineered for durability and long-lasting performance.

The Crimson boasts a premium forged carbon faceplate that pays homage to Symphonium's origins and resilience.

This material composite has graced the works of award-winning jewelry, watch, and luxury vehicles. Due to the material's inherent nature, each faceplate is a unique masterpiece, ensuring no two sets are the same.

Given the Crimson's status, it's only fitting that this distinctive and premium material finds its place within the design.  

Exclusive Cable With Ultimate Versatility.

The Crimson Earphone comes with an exclusive Altalune Audio Novaron 26AWG Type 2 Litz OCC copper cable.

This Symphonium Crimson exclusive variant of the Novaron features a unique construction to complement the Crimson. Choose between a 4-wire or 8-wire configuration to best fit your needs.

Each exclusive Altalune Novaron cable comes terminated with super low impedance OE interchangable plugs with both 3.5mm and 4.4mm version heads, allowing for compatibility with a myriad of source devices on top of offering futureproof flexibility.


Each earphone undergoes rigorous channel matching and reference matching with PrecisionMatch™ technology to guarantee a superior listening experience.

Quality Eartips

Paired with a comprehensive set of Azla Sednafit Standard and Divinus Velvet Eartips, the Crimson ensures a flawless fit for every listener.

  • TrueX 4-Way Crossover 
  • FLAT and PHAT Technology 
  • Full Balanced Armature Design
  • Forged Carbon Composite Faceplates
  • Anodized AL6061 Aluminium Shell
  • Azla Sednafit Standard and Divinus Velvets Eartips
  • Exclusive 26AWG Novaron in 4 or 8 Wire Configuration
  • OE Interchangeable Plugs w/3.5mm and 4.4mm Heads
  • Hand-Crafted in Singapore
Driver Crossover TrueX™ Custom 4-Way Crossover with FLAT™ Technology
Frequency Response 10Hz - 24kHz, +/- 2 dB
Sensitivity 106dB/Vrms @ 1 kHz
Impedance 6.05 Ohms @ 1 kHz
Socket Spring Loaded 0.78mm 2-Pin
Cable 26 AWG Pure OCC Copper Litz Novaron
[4-Wire or 8-Wire Option Available]
OE Plug Termination w/4.4mm and 3.5mm plugs
Cable Impedance 8-wire: 0.12 Ohms (3.5mm), 0.12 Ohms (4.4mm) @ 1kHz
4-wire: 0.20 Ohms (3.5mm), 0.20 Ohms (4.4mm) @ 1kHz

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