Ortofon SPU Classic NThe SPU Classic N provides the same sound reproduction properties as the SPU Classic GM series, but is sold without the integrated headshell unit. The SPU Classic N is a Moving Coil (MC) cartridge with an 18µm spherical stylus profile. Listeners who wish to mount the SPU Classic on a traditional headshell may do so by using SPU N adaptor.Those with vintage SPU-type headshells* can use the Classic N to recreate an authentic and functional SPU cartridge.  *Vintage SPU-type headshells are no longer available.We offer Special Repair Service for  SPU Classic N » Technical data Output voltage at 1000 Hz, 5cm/sec.0.2 mVChannel balance at 1 kHz< 1 dBChannel separation at 1 kHz>20 dBChannel separation at 15 kHz>10 dBFrequency range at – 3dB20-25.000 HzFrequency response20-20.000 Hz ± 3 dBTracking ability at 315Hz at recommended tracking force *)65 µmCompliance, dynamic, lateral8 µm/mNStylus typeNude sphericalStylus tip radiusR 18 µmTracking force range3.0-5.0 g (30-50 mN)Tracking force, recommended4.0 g (40 mN)Tracking angle20°Internal impedance, DC resistance6 OhmRecommended load impedance>10 OhmCoilwire materialHigh Purity Copper (OFC)Cartridge colourBlackCartridge weight13 g