Oppo PM-3 - Manual (Page 8)

Specifications
Headphone Specifications
Model Name PM-3
Acoustic Principle Closed-back
Ear Coupling Circumaural
Nominal Impedance 26 Ohm
Sensitivity 102 dB in 1 mW
Clamping Pressure 5 N
Cables
3 m detachable cable (3.5 mm & 6.35 mm)
1.2 m detachable cable (3.5 mm)
Cable Connectors
Output: 3.5 mm stereo jack
Input: 6.35 mm stereo jack, 3.5 mm stereo jack
Weight 320 g (without cable)
Accessories
Carrying case
User Manual
Driver Specifications
Driver Type Planar Magnetic
Driver Size (Round) 55 mm diameter
Magnet System Symmetric push-pull neodymium
Frequency Response In
Free-Field
10 – 50,000 Hz
Long-Term Max Input
Power
500 mW according to IEC 60268-7
Pulse Max Input Power 2 W
7