2M 78 VERSO από την ORTOFON, κεφαλή -True Mono- με σφαιρική βελόνα κατάλληλη για playback δίσκων 78 στροφών.  Τεχνικά χαρακτηριστικά: Output voltage at 1000 Hz, 5cm/sec.: 4 mV Frequency range at - 3dB: 20-22.000 Hz Frequency response: 20-20.000 Hz + 3 / - 1 dB Tracking ability at 315Hz at recommended tracking force: 70 µm Compliance, dynamic, lateral: 18 µm/mN Stylus type: Spherical Stylus tip radius: R 65 µm Tracking force range: 1,6-2,0g (16-20 mN) Tracking force, recommended: 1,8 g (18 mN) Tracking angle: 20º Internal impedance, DC resistance: 700 Ohm Internal inductance: 300 mH Recommended load resistance: 47 kOhm Recommended load capacitance: 150-300 pF Cartridge colour, body/stylus: Grey/Black Cartridge weight without screws: 7,2 g Replacement stylus unit: 2M 78