The Audio-Technica PRO 31QTR is a dynamic microphone with broad frequency response and low handling noise. The PRO 31QTR has a tough, durable design that delivers consistent performance on the road. The cardioid polar pattern reduces pickup of sounds from the sides and rear, improving isolation, while the Hi-ENERGY neodymium magnet delivers a hot signal with articulate vocal reproduction. Audio-Technica builds the PRO 31QTR mic with built-in pop protection, an on/off switch, and corrosion-resistant, gold-plated contacts.