Audio-Techncia PRO 31 Cardioid Dynamic Handheld Microphone Close-up vocal performance microphone sets price/performance standards for intelligibility, transparent sound quality and noise suppression Cardioid polar pattern reduces pickup of sounds from the sides and rear, improving isolation of desired sound source Hi-ENERGY neodymium magnet for high output and articulate vocal reproduction Two-stage ball-type headcase for superior "pop" protection MagnaLock(TM) on/off switch