Ortofon Concorde S-120 Twin Pack - 2 x DJ Cartridges each fitted with stylus CC S-120 DJ Turntable Cartridge Twin Pack The Ortofon/Serato S-120 Turntable Cartridge may be the world's first cartridge to employ a technology known as Asymmetric Suspension (patent pending) Unlike other cartridges, this new technology makes it possible for DJs to use an exceedingly wide range of tracking force (between 1 5 to 10 grams) without any difference in sound reproduction Not only can DJs use this cartridge at extremely low tracking forces to virtually eliminate record wear when playing vinyl rarities, but the tracking force can also be increased all the way up to as much as 10 grams to provide extreme groove handling ability for even the most demanding and vigorous scratch performance