Westone UM Pro 20 Review: Ranked #905 of 909

Last updated: October 13, 2026

The Westone UM Pro 20 ranks #905 out of 909 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.

Brand: Westone

Prices on this page were last checked October 13, 2026 at 3:17 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

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Westone UM Pro 20 - ranked #905 of 909 In-Ear Headphones · Editor's rating 1/5

#905 Westone UM Pro 20 Discontinued eBay

Pros: It uses 2 x balanced armature with an easy 27 ohm load.

Cons: Discontinued, so it is mainly found used. A tonal tilt of -1.99 makes it sound dark, with bass well ahead of the treble. Its 5.97 dB spread from the target means a noticeably uneven response. A Harman score of 17 places it in the lower part of the in-ear rankings.

Released2013 (13 years ago)
ConnectionWired
Deviation From Target5.97 dB standard deviation
Driver TypeBalanced armature
Drivers2 x balanced armature
Form FactorIn-ear
Frequency Response20Hz - 18kHz
Harman Preference Score17 (measured by crinacle, via AutoEQ)
Impedance27 ohms
Sensitivity119 dB/mW
Tonal Tilt-1.99 (negative is warmer, positive brighter)
Weight0 lbs (12.7 g)
EQ preset to match the Harman target

Set a preamp of -7.2 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.

FilterFrequencyGainQ
Low shelf105 Hz-0.5 dB0.70
Peak234 Hz-7.8 dB0.44
Peak3,522 Hz+6.7 dB0.30
Peak1,460 Hz-3.6 dB1.68
Peak10,000 Hz+2.8 dB4.62
High shelf10,000 Hz+4.7 dB0.70
Peak9,581 Hz-2.9 dB5.72
Peak71 Hz+0.5 dB1.90
Peak142 Hz-0.6 dB1.70
Peak251 Hz+0.3 dB1.70
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