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Westone B50 Five Drivers IEM Earphones with Bluetooth Cable

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  • Five custom-made balanced armature drivers with three-way crossover

  • Powerful bass response with enhanced sonic detail and clarity

  • Westone MMCX Bluetooth audio cable with controls and mic

  • Westone high-definition silver MMCX audio cable

  • Exchangeable metal faceplates

Westone B50 Five Drivers IEM Earphones with Bluetooth Cable

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Westone B50

Westone B50 with five balanced-armature drivers is making a rumble in the earphone world with their largest low-end driver in combination with dual mid, and dual high-frequency drivers. The result is a powerful sound that is sure to satisfy bass hungry listeners. Westone B50 creates a sound that is totally immersive, with sonic detail and clarity that has to be heard to be believed.

Expertly tuned and carefully configured balanced armature drivers are dedicated to high, mid and low frequencies respectively. Also, Westone have added the largest low-end BA driver, combined with a sophisticated crossover for a sound experience that extends well beyond typical in-ear monitors for a sound you can feel as well as hear.

With the full-resolution Bluetooth Cable, the B50 is able to convey extraordinary detail, clarity and a highly dynamic soundstage wirelessly. Westone have also included it's high-definition silver cable with low resistance copper wire to improve conductivity and provide a more clear and detailed sound.

Feel the rumble.

 Westone B50


True-Fit Technology
With 60 years of experience in designing and making in-ear audio products, Westone are experts in creating low-profile, lightweight, universal-fit monitor earphones that provide the highest comfort and perfect in-ear coupling for the best possible listening experience.

Advanced Balanced Armatures
Custom designed and expertly tuned balanced armature drivers with smaller dimensions than standard dynamic models provide enhanced sonic detail and a broad frequency range.

High-Definition Cable
Westone’s High-Definition Silver MMCX Cable features four strands of low-resistance, pure-silver plated copper alloy, braided around a centre strengthening core. Low resistance silver-plated copper wire improves electrical conductivity, providing extraordinary clarity and detailed sound reproduction.

Bluetooth Cable
Westone’s full resolution Bluetooth cable provides the most immersive and articulate wireless earphone experience on the available. Powered by aptX technology and tuned by Westone to provide the best listening experience possible.

Made in the USA
Meticulously built by a staff of dedicated artisans and lab techs, Westone's USA products exhibit a level of craftsmanship that truly embodies America's rich history of handmade artistry.



  • Driver: Five balanced armature drivers with three-way crossover (single low, dual mid, dual high-frequency drivers)
  • Sensitivity: 118dB SPL @ 1mW
  • Frequency response: 10Hz - 20kHz
  • Impedance: 25Ω @ 1kHz
  • Passive noise attenuation: 25dB
  • Cable: High-Definition Silver MMCX cable (132cm) / Westone Bluetooth Cable (70cm)
  • Bluetooth Version: 4.0



  • Powerful bass response with enhanced sonic detail and clarity
  • Five custom-made micro balanced armature drivers
  • Separate drivers for bass, mid-range and high frequencies
  • Advanced three-way crossover design
  • Westone MMCX Bluetooth audio cable
  • High-definition Silver Plated MMCX audio cable
  • Star and True-Fit silicone eartips in multiple sizes
  • Different coloured exchangeable metal faceplates
  • Designed and assembled in the USA



  • Westone B50 Earphones
  • Five sizes of patented STAR silicone eartips
  • Five sizes of premium True-Fit comfort foam eartips
  • Westone MMCX Bluetooth audio cable
  • Westone high-definition silver MMCX audio cable
  • Exchangeable faceplates
  • Deluxe zippered carrying case


Product TypeEarphones
Feature KeywordBluetooth, Comfortable, Ear Canal, IEM, In Ear, Microphone, Monitor, Noise Isolation, Portable, Professional, Rechargeable, Smartphone, Studio, Wireless
Recommended UseDigital audio player, Mobile phone, Portable audio system, Studio
Manufacturer Warranty2 Years
Included AccessoriesSTAR silicone eartips, True-Fit foam eartips, MMCX Bluetooth cable, High-definition silver cable, Faceplates, Carrying case
Part Number70026
Headphone Fit TypeIn-Ear
Headphones TypeHeadphones - binaural
Cable EntryNo
Cable LengthHigh-Definition Silver MMCX cable (132cm) / Bluetooth cable (70cm)
Connector AngleAngled
Connector TypeHeadphones (3.5 mm stereo jack)
Detachable CableYes
Driver SizeNo
Driver TypeBalanced Armature
Connectivity TechnologyNo
Earcup DesignNo
Frequency Response10Hz - 20kHz
Headphones Form FactorIn-Ear
Headphones TechnologyBalanced Armature
Number of DriversFive Drivers
Sound Isolation (dB)25dB
Sound Output ModeStereo
Smartphone CompatibilityUniversal 3 Button
Smartphone ControlsCall Answer/Hangup, Music Track Fwd/Back, Volume Control
Total Harmonic Distortion (THD)No
Wireless TechnologyBluetooth

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