Electro-Voice PL77A is a single-D electret condenser cardioid microphone designed for professional vocalists. It is well-suited for close-up use, providing a natural, transparent sound quality with a proximity effect that boosts bass response. The PL77A also features a two-position bass response switch for tailoring the sound to fit the voice. Its rugged construction and built-in Acoustifoam™ blast filter make it suitable for use in demanding environments. The microphone can be powered by either phantom power or an internal battery, making it versatile for use in various settings.