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5-way hybrid driving technology

Customization-Class integration of moving iron and automatic moving coil

4 Customization-Class Hi-End Balanced Armature driver

The high-definition resolution power shows you lively instruments and voices.

1 customized bass dynamic driver

Surpass the conventional bass diving ability.
Make music full and extend, grand and magnificent.


Delicate 3D acoustic cavity coil design

Create suitable voice space for the voice attributes of every unit by means of delicate 3D analysis technics

Delicate full-frequency fractional frequency tuning

Make 5 high-quality drivers with different attributes combine perfectly.

Lower internal resistance 8 cores silver plating balance cable

Compared with most earphones with 4 cores or 3 cores wire rod, it doubles the wire rod. As great reduction of the internal resistance of wire rod, the signal becomes more clear and prompt.

Original 2.5mm quadrupole balanced designed plug

Protogenously equipped with 3.5mm balance convert cable and stereo universal cable

Tougher all-metal shell

High precise CNC incision and rigorous assembly technique make Sirius utterly natural.

The fourth generation MMCX locking design

The special made stainless steel structure makes the connection of MMCX more stable and durable.

Excellent wearing design to be more supra-aural

More than a hundred of experiments and adjustments only for better fit auricle and excellently isolate noise.

More stable over-ear-style sport wearing

No matter in stage, train, gym or street, you can absorb in your music.

Music flame, completely display

Sirius, its every design is deliberate, and every part is carefully considered. Just because every detail will affect the excellent performance of sound quality and wearing. The pursuit of delicacy, the painstaking research and consideration about 700 days make the right product.


Color: Dark Grey
Driving Units: 4 Balanced Armature driver & 1 dynamic driver
Frequency Response: 4-45000 Hz
Impedance: 20Ω
Sensitivity: 113dB
Input Power: 30mW
Total Harmonic Distortion: <1%
Plug: Protogenous 2.5mm balance stereo rhodium plating plug
Cable Length: 1.3m 8cores silver plating OFC audiophile cable
Converting Cable: 2.5 to 3.5mm quadrupole balance converting plug; 2.5 to 3.5 mm universal stereo converting plug
Applicable products: iphone, Samsung, HTC, Xiao mi, Meizu(all models), Ipad (Tablet&PC). It applies to 99% market electronic products


Package list :

Fidue Sirius A91 earphone
4 x Monolayer silicone case
1 pair Comply T500 memory sponge cover
1 x Holder belt
1 x Disassemble kit
1 x Clean kit
1 x Tailor-made aluminum alloy housing case
1 x Aviation stereo plug
1 x 3.5 to 6.3 stereo converter


  • Function: For Mobile Phone
  • Function: Monitor Headphone
  • Function: Sport
  • Function: For Routine Office Work
  • Function: Common Headphone
  • Function: for Video Game
  • Function: Noise Cancelling
  • Function: Wireless Headphone
  • Function: PORTABLE
  • Function: HiFi Headphone
  • Function: For iPod
  • Support APP: No
  • Time to market: 2016
  • Active Noise-Cancellation: No
  • Connectors: 3.5mm
  • Support Apt-x: No
  • Resistance: 20Ω
  • Support Memory Card: No
  • Sensitivity: 113dB
  • Vocalism Principle: Hybrid technology
  • With Microphone: No
  • Frequency Response Range: 5-40000Hz
  • Control Button: No
  • Line Length: 1.25m
  • Style: In-Ear
  • Plug Type: Line Type
  • Is wireless: No
  • Brand Name: Fidue
  • Wireless Type: None
  • Volume Control: No
  • Waterproof: No
  • Model Number: SIRIUS
  • Communication: Wired
  • compatible platform: Windows Phone iOS ANDROID
  • sensitivity: 113dB/mW
  • impedance: 20.
  • model: SIRIUS
  • cable length: 1.3 meters
  • Use: Portable Media Player
  • Package: Yes
  • With Microphone: No


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