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The X5i Five Driver
In-Ear Headphones

The X5i

Combining style, excellent build quality and the unrivaled performance of our 5 linear-driver design, the MAS X5i delivers audiophile class high fidelity sound through high quality music streaming.


​Full range five driver design

The full-range five drivers is composed of four dedicated Balanced Armature drivers and one dynamic driver to reproduce linear high fidelity sound from 5Hz to 70KHz.   

Proprietary acoustic design

The Core Array Technology ™ is MAS' proprietary coaxial acoustic design making sound waves of all drivers are aligned to achieve less sound degradation and a spacious soundstage.  The rigid metal construction of the X5i eliminates vibration and unwanted resonance to reproduce the purest sound possible.

Core Array Structure_W.png

Mobility that doesn't sacrifice musicality 

The X5i is easy to drive from your mobile devices such as smartphones, tablets and portable music players, so you can enjoy audiophile-grade sound through  music streaming such as Apple Music, Tidal, Qobuz, Deezer, and KK BOX with ease.

Sliver-coated Oxygen-Free Copper cable 

The audiophile grade silver-coated Oxygen-Free Copper (OFC) cable is designed for the extreme audio fidelity. It can give finer detail, smoother treble and faithfully reproduced musical expression. 

Remote cable with MEMS microphone

The remote cable allows you to make calls and select tracks on your iOS or Android mobile devices. Its high quality MEMS microphone delivers incredibly clear voice quality perfect for conference call and communication.

(Note: Please note that some mobile devices may not fully support the remote because of different Apps or operation systems.)

Premium build quality

Featuring high quality CNC metal parts with anti-fingerprint matt finishing and leather-like surface treatment, the X5i exudes premium build quality and minimalist aesthetics.The X5i's special magnetic clipping design also prevents earbuds from falling apart or losing.

Engineered for ergonomics

Thanks to the compact earbuds, 7 variations of eartips and 3 variations of earwings, the X5i not only provides perfect fit for all kinds of ears but also comfort even used for extended period. 

Interchangeable Headphone
Cable System™


All MAS headphones are compatible with separate MAS headphone cables which offer a variety of purposed-built features to suit your specific needs. 


Complimentary 3.5mm cables include a remote cable which allows you to make calls and select tracks on your mobile devices and a silver-coated OFC cable which provides you with extreme audio fidelity.

Optional Cables

  • The XX Bluetooth Cable provides stable Bluetooth wireless connection feature.

  • The XX Type-C Headphone Cable provides 7.1 channel 3D surround sound and Hi-Res DAC function.






Please connect and disconnect the MMCX

cables vertically to the jacks or earbuds.


Driver Unit - 10mm Dynamic + 4 Balanced Armatures

Impedance - 12Ω

Frequency Response - 5-70,000Hz

Sensitivity - 105db/mW(@1kHz)

Accessory Kit

  • A silver-coated OFC cable

  • A remote cable with MEMS microphone

  • Four sets of silicon ear tips(S/M/M/L)

  • Three sets of memory foam ear tips(S/M/L)

  • ​Three pairs of ear wings(S/M/L)

  • A soft carrying pouch

  • A product warranty card

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