Electro-Voice PL77 is a high-performance vocal microphone with a cardioid polar pattern, making it ideal for capturing vocals in live performances. Its frequency response ranges from 50Hz to 18kHz, ensuring accurate sound reproduction. The microphone features a built-in Acoustifoam pop filter to minimize plosives and sibilance, and a Memraflex grille screen for durability. The PL77 can be powered either by an internal A5 Volt Battery or by an external 24 to 48 Volt phantom power supply, providing flexibility in different usage scenarios.