Westone Audio
MACH 20
headphones
$440
Used market: $345*
Specifications
3 of 6 values have a recorded sourceExpert Audio Engineering Commentary
Tonal Profile
Two armatures, one low and one mid/high, with a passive crossover — and 96 Ω, the highest impedance among the in-ears in this catalogue. That is not a design flourish: series-wired armature networks land there naturally.
Gain Staging Advice
110 dB/mW at 96 Ω is about 120 dB/V — still easy. The practical consequence of 96 Ω is the opposite of the usual in-ear worry: a source with a 10 Ω output impedance costs less than a decibel here, where on a 16 Ω hybrid it would be audible.
* Estimated with the depreciation fallback (~78% retained value). · checked on 8/5/2026