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Westone UM PRO 50 Universal-Fit In-Ear Earphone - Clear

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Westone UM PRO 50 Universal-Fit In-Ear Earphone - Clear

  • New and improved five balanced armature driver universal-fit in-ear monitors with 3-way crossover

  • Roaring lows with a detailed midrange and articulate highs with balanced presentation

  • Superior performance in a compact, lightweight package

  • Left and right earpiece responses matched to tight tolerance

  • Sound-isolating Star and True-Fit tips in multiple sizes ensure a comfortable custom fit



The new and improved five-driver UM Pro 50 features five proprietary balanced-armature drivers with a three-way passive crossover and is the flagship IEM in Westone's line of universal-fit in-ear monitors. The sound stage of the UM Pro 50 is totally immersive, and delivers sonic detail that has to be heard to be believed. With its thunderous lows combined with a detailed midrange and articulate highs in a balanced and harmonious presentation, the UM Pro 50 meets the demands of the most discerning musician or music lover.

Westone True-Fit Technology: 50+ years’ experience with in-ear applications has yielded a low-profile, lightweight, universal earpiece which delivers maximum comfort and in-ear coupling for dynamic transfer of sound.

Five Balanced Armature Drivers: Westone’s proprietary balanced armature drivers are significantly more compact and efficient than traditional dynamic drivers. As the pioneers in combining multiple balanced armature drivers with sophisticated crossover networks, Westone monitors provide enhanced sonic detail and frequency range that extends well beyond typical in-ear monitors.

MMCX Audio™ Twisted Cable: Westone’s robust replaceable cable is constructed of bifurcated, high-flex, ultra-low resistance tensile wire, reinforced with a special aramid fiber, and braided for ultimate durability, acoustic transparency, and isolation from mechanical cable noise. Equipped with Westone’s proprietary, high tolerance MMCX connectors ensure a reliable connection every time.

Acoustic Symmetry: Left and right earpiece responses are matched to an extremely tight 3dB tolerance.

Designed and Engineered in Colorado, USA: Meticulously designed by a staff of dedicated artisans and lab techs based in the USA.

Technical Specifications

Additional Information

Package Contents
  • Westone UM Pro 50 earphones
  • Five sizes of Patented STAR™ silicone
  • Five sizes of True-Fit™ foam assorted ear tips
  • Mini-monitor vault
  • Cleaning tool
Colour Clear
Warranty 2 years (local)
Availability Preorder / Backorder (currently unavailable)
Product Type Earphone
Style/Type Universal In-Ear
Driver Configuration 5-Drivers (Balanced Armature)
Frequency Response (Hz) 20 Hz - 20 kHz
Sensitivity 115 dB SPL @ 1 mW
Headphone Design Closed-Back
Cable Style Detachable (MMCX)
Input Connectivity 3.5mm stereo
Additional Tech Specs
  • Driver: Five balanced armature drivers with three-way crossover.
  • Cable: EPIC Replaceable cable
User Reviews

Customer Reviews 1 item(s)

Basically a UM3x/UM PRO 30 with more pronounced bass
As stated, the UM PRO 50 is basically the UM3x/UM PRO 30 with more pronounced bass. The extra bass does take some getting used to coming from anything else in Westone's UM line-up. Don't get me wrong--the bass is just as tight as what one would normally expect from Westone's universal monitors but it is far more pronounced than what I suspect many UM1/2/3x users are going to be used to. That being said, this is in no way a criticism of the UM Pro 50. The clear and precise highs and the warm lush mids (especially when it comes to female vocals) that many Westone fans have come to expect from their IEMs are still there. (In fact, I'm hearing some things on my George Michael tracks that I didn't with my UM3x.)

As far as value goes, who are we kidding--this is audiophile stuff. Most people don't drop more than 200 bucks on earphones (let alone close to a thousand). That being said, however, this is really quite a good deal considering that Westone's famous ES5 goes for a good chunk more change.
Build Quality
Value For Money
Review by Jacob / (Posted on 13/04/2015)