Compatible microphones: Classic II K2 NTK NT2-A NT1000 NT2000 NT1-A The SM-2 is a suspension shock mount that holds the R DE NT2-A NT1000 NT2000 NTK K2 & Classic II microphones. It provides isolation from external physical factors that may cause unwanted rumble & vibrations in the microphone. in addition the SM2 allows for flexible mounting to position your microphone perfectly in any situation.