The Debra Audio AU400 4 channel wireless microphone system provides crystal-clear sound transmission with excellent sound quality. It features advanced anti-interference technology to filter out unwanted noise and ensure a seamless performance. The system also has a reliable signal strength with a squelch circuit for stable RF frequency channels. Ideal for various applications such as church services, parties, weddings, conferences, and karaoke nights, this system comes with a wireless receiver for easy setup. The package includes two handheld microphones, two bodypacks, lavalier and headset microphones, as well as necessary cables and a power supply.