Diana MRx
headphones
$3,295
Used market: $2,570*
Specifications
3 of 5 values have a recorded sourceExpert Audio Engineering Commentary
Tonal Profile
63 mm planar in a very light shell, bass-reference tuning, -3 dB at 10 Hz by the maker's own graph. 30 ohms and a flat impedance curve mean the amplifier you choose changes the level and the noise floor, not the tuning.
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.
«Impedance: 30 Ω | Sensitivity: 93 dB/mW»
ABYSS publishes 30 ohms and 93 dB/mW for both the Diana MRx and the JOAL, two headphones the same pages describe as using different 63 mm transducers and sell at different prices. The JOAL page spells the unit 'dB/mw'; the AB-1266 page spells it 'db/mW'. Neither is the SI symbol, which is dB/mW - the lower-case m is milli and the upper-case W is watt.
checked 8/5/2026* Estimated with the depreciation fallback (~78% retained value). · checked on 8/5/2026