MACH 50
headphones
$880
Used market: $685*
Specifications
3 of 6 values have a recorded sourceExpert Audio Engineering Commentary
Tonal Profile
Five armatures — one low, two mid, two high — with a three-way passive crossover, and 32 Ω, three times lower than the two-driver MACH 20 above it. Driver count and impedance move independently in armature designs; the crossover topology decides.
What the datasheet actually says
Quoted verbatim from the manufacturer’s own page, with the date we checked it. We state what is printed, not what anyone intended by it.
«SENSITIVITY: 110dB @1kHz»
The identical «110dB @1kHz» stands on four MACH pages whose published impedances are 96 Ω (MACH 20), 91 Ω (MACH 30), 42 Ω (MACH 70) and 32 Ω (MACH 50). If the figure is per milliwatt, those four are spread over 4.8 dB of voltage sensitivity; if it is per volt, they are spread over 4.8 dB of power sensitivity in the other direction. No page states which, so the one number cannot mean the same thing on all four sheets, and the reader cannot tell which sheet it was measured on.
checked 8/5/2026* Estimated with the depreciation fallback (~78% retained value). · checked on 8/5/2026