Ortofon 2M Mono True mono with Nude Spherical diamiond MOVING MAGNET CARTRIDGES Output voltage at 1000 Hz, 5cm/sec. - 4 mV
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 - Nude Spherical
Stylus tip radius - R18 µm
Tracking force range - 1.6-2.0 g (16-20 mN)
Tracking force, recommended - 1.8 g (18 mN)
Tracking angle - 20°
Internal impedance, DC resistance - 700 Ohm
Internal inductance - 350 mH
Recommended load resistance - 47 kOhm
Recommended load capacitance - 150-300 pF
Cartridge colour, body/stylus - Black/White
Cartridge weight without screws - 7.2 g
Premounted cartridge weight - 16.7 g

Replacement stylus unit - 2M Mono (interchangeable with 2M 78)

Stylus lifetime: with proper care we find that up to 1000 hours is possible without degradation of performance. Please read about stylus care on our FAQ.

2M Series styli interchangeability:
The 2M Series' engines, coils and magnets configurations are not identical: Red and Blue are identical, so are the Bronze and Black and so are the true mono variants 2M Mono and 2M 78. Likewise, 2M series styli are interchangeable within the below combinations:
- 2M Red, 2M Blue and 2M Silver
- 2M Bronze and 2M Black
- 2M Mono and 2M 78

Compatibility with Rega brand TT/TA:
REGA brand cartridges’ height from stylus tip to the top cartridge mounting surface is lower than standard. Therefore you would need spacers to ensure the correct set-up of the Ortofon cartridge. Please read about cartridge set-up and alignment on tonearm on our FAQ.
Adjusting the height of your Rega tonearm is easy with Acoustic Signature's Spacer Set. It allows you to adjust the height from 0.5 mm to 3.5 mm in precise steps of 0.5 mm - without removing the tone arm. Simply loosen the screws, insert the AS-spacer, then lock the screws back down, and you're tonearm is ready to play.
3.2 - 4 mm spacers should be enough for 2M cartridge.