The Ortofon MC Windfeld Technical data

Output voltage at 1000 Hz, 5cm/sec.  -  0.3 mV
Channel balance at 1 kHz   - < 0.2 dB
Channel separation at 1 kHz  -  > 28 dB
Channel separation at 15 kHz  -  > 22 dB
Frequency range at - 3dB  -  10-80 kHz
Frequency response  -  20-20 kHz + / - 1 dB
Tracking ability at 315Hz at recommended tracking force  -  100 µm
Compliance, dynamic, lateral  -  16 µm/mN
Stylus type  -  Nude Ortofon Replicant 100, special polished
Stylus tip radius -   r/R 5/100 µm

Tracking force range  -  2.3-2.8 g (23-28 mN)
Tracking force, recommended  -  2.6 g (26 mN)
Tracking angle  -  23°
Internal impedance, DC resistance  -  4 Ohm
Recommended load impedance  -  > 10 Ohm
Cartridge body material  -  Stainless steel/special alloy
Cartridge colour  -  Black/Black
Cartridge weight  -  13 gram