2M HiFi Phono Cartridge With Elliptical Diamond StylusThe 2M Series of cartridges is designed for precise and accurate retrieval of the information in the record groove. Ortofon's philosophy is to play the record sound as accurate as possible without coloring the sound.The name 2M was selected from several ideas. Ortofon wanted a modern name that would be easy to pronounce and remember and therefore an alphanumerical name was chosen. 2M means MM which is the abbreviation for moving magnet. The 2M series of cartridges features Ortofon’s trademark split pole pins an invention that enables moving magnet cartridges to have a flat frequency response as with a moving coil cartridge. Split pole pins were invented by Ortofon and were originally presented in the 500 series and Super OM series.  We have optimized the design for ease of mounting the cartridge and the weight and size to fit the most common turntables on the market today. The 2M Series provides excellent compatibility when used in an assortment of playback systems and with a wide variety of phono preamps. 2M Red Series Features:an improved engine which provides an increased output of 5.5mVa tipped Elliptical diamond and split pole pins with a copper wireWhat's In The Box:1 x Stylus brush1 x Screwdriver2 x Screw M25 x 52 x Screw M25 x 7Specifications:Output voltage at 1000 Hz 5cm/sec: 55 mVChannel balance at 1kHz: 15 dBChannel separation at 1 kHz: 22 dBChannel separation at 15 kHz: 15 dBFrequency range at - 3 dB: 20-22.000 HzFrequency response: 20-20.000 + 3 / - 1 dBTracking ability at 315Hz at recommended tracking force: 70 micrometersCompliance dynamic lateral: 20 micrometers/mNStylus type: EllipticalStylus tip radius: r/R 8/18 micrometersTracking force range: 16-20g (16-20 mN)Tracking force recommended: 18 g (18 mN)Tracking angle: 20 degreesInternal impedance DC resistance: 13 kOhmInternal inductance: 700 mHRecommended load resistance: 47 kOhmRecommended load capacitance: 150-30