Turntable cartridges have not made many changes for a long timne, especially in the DJ space. Shure, Stanton, Audio Technica, Denon, and of course Ortofon to mind when you think of needles and cartridges for your dj turntables. But the game when Phase technology becvme viable. Phase offers virtual/digital needles which have transmitters & receivers that are battery powered, long lasting, and quickly rechargeable. With the ability to have up to 4 running simultaneously, Phase will save you thousands on needles over the course of your career. Now trusted by top artist worldwide, Phase is a must have in your turntable setup.