The Shure ULXS4 Receiver in M1 frequency range of 662-698 MHz is a wireless microphone receiver designed for professional audio applications. It comes with power supplies and antennas, and has been fully tested to ensure optimal performance. The ULXS4 is known for its reliability and quality, making it a popular choice among musicians, sound engineers, and audio professionals looking for a dependable wireless system. The receiver is part of the ULX-D series from Shure, a reputable brand in the industry known for their innovative audio products. Comes with everything pictured.