X5i Titanium 

Extreme Fidelity 5-Driver 

In-Ear Headphones


X5i Titanium

Crafted for the discerning listeners who value quality and design but don't follow trends blindly, MAS’ X5i Titanium is a stylish high end 5-Driver in-ear headphones imbued with minimalist aesthetics and unrivaled performance. Featuring extreme audio fidelity, broad dynamic range and wide frequency response, MAS' X5i Titanium is certified as Hi-Res Audio Headphones by the Japan Audio Society.


​Brand-new 5-Driver Hybrid Configuration

The X5i Titanium features brand-new 5-Driver configuration composed of four custom Knowles Balanced Armature drivers plus one Titanium Dynamic driver to deliver exceptional sound. Thanks to MAS proprietary crossover design, the five drivers can work together well to perform their maximum potential, with an extremely coherent and extended frequency response.


Proprietary Acoustic Design

The Core Array Technology ™ aligns all acoustic components coaxially in the structure to increase drivers' efficiency, controls sound waves accurately and reduces distortion. The result is less sound degradation, finer detail and a spacious soundstage. The rigid composite acoustic structure of the X5i Titanium can also greatly reduce unwanted resonance to reproduce the purest sound possible.  


Designed for Discerning Listeners

The X5i Titanium is designed to meet the expectation of the most discerning listeners. The X5i Titanium not only can link your audio equipment like amplifiers to deliver the maximum high resolution sound but also is easy to drive from your mobile devices like smartphones to deliver the audiophile grade sound through music streaming such as Spotify, YouTube, Apple Music and Google Music.   

Upgraded Silver-Coated OFC Cable 
Soft Braid Cable
Shielding Layer
Anti-Vibration Insulator
Oxygen Free Copper

Upgraded Sliver-Coated OFC Cable for Ultimate Sound

The X5i Titanium comes with an upgraded Oxygen-Free Copper (OFC) cable which is developed to connect to your music players, amplifiers & DAC, and mobile devices to deliver ultimate audio experience.

Remote Cable for Meeting and Communication

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.)

Superior Build Quality

Featuring precision CNC metal parts with anti-fingerprint matt coating and leather-like surface treatment, the X5i Titanium exudes exquisite craftsmanship and superior build quality.


Engineered for Ergonomics

Thanks to the compact earbuds, 7 variations of eartips and 3 variations of earwings, the X5i Titanium not only provides perfect fit for all kinds of ears but also comfort even used for extended period. The X5i Titanium also has good portability with the earbud magnet-clipping design and custom carrying case. 

MAS Interchangeable Headphone Ecosystem

All MAS X-Series headphones and earbuds are compatible with separate MAS XX interchangeable headphone cables which offer a variety of purposed-built features to suit your specific needs. The headphones and headphone cables also can be upgraded or replaced separately to cut unnecessary repetitive purchase.

Included MAS XX 3.5mm Cables include a remote cable which allows you to make calls and select tracks on your mobile devices and an upgraded silver-coated OFC cable which provides you with the maximum audio fidelity.

Optional MAS XX Cables

  • The MAS XX Bluetooth Cable connects to your iOS or Android mobile devices via Bluetooth.

  • The MAS XX Type-C Headphone Cable with Hi-Res Audio DAC connects to your mobile devices via USB Type-C port for enjoy high quality digital music and 7.1 channel 3D surround sound.



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)

  • Headphone connector: MMCX

  • Headphone cable connector: MMCX and 3.5mm gold-plated audio plug

Accessory Kit

  • A silver-coated OFC cable

  • A remote cable with MEMS microphone

  • Lightening adapter for iOS

  • USB-C adapter for Android

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

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

  • ​Three pairs of MAS XX Earwings(S/M/L)

  • A hard-shield carrying case

  • A soft carrying pouch

  • A product warranty card