Ortofon Serato OM S-120 Premounted DJ Turntable Cartridge Take advantage of high-tech suspension technology with this tracking-adjustable cartridge The Ortofon/Serato S-120 is the world's first turntable cartridge to employ a new 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 the Ortofon OMS-120 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