PGA31 is a permanently polarized electret condenser microphone for general, speech and performance use. It is designed to provide maximum versatility and reliable operation in a wide range of conditions and at an affordable price. Its special design to be placed on the user's head offers improved comfort and a secure fit for hands-free operations in any situation; The unidirectional directivity (cardioid pattern) of the capsule provides excellent off-axis rejection, allowing for greater gain before feedback when using stage monitors.