Audio-Technica ATM510PK Vocal PackThe ATM510PK vocal microphone pack gives you a set of three ATM510 cardioid dynamic handheld microphones that are tailored for smooth, natural vocal reproduction. The ATM510 features a cardioid capsule that reduces pickup of sounds from the sides and rear, maximizing isolation from other sound sources and minimizing feedback. It is equipped with a rare earth magnet for improved output and transient response, and has specially designed internal shock