The D Debra Audio AU400 Pro UHF 4 Channel Wireless Microphone System is a professional audio equipment suitable for musical instruments and gear. The wireless and UHF connectivity options provide freedom of movement and clear communication. This microphone system is designed for the professional audio market, with a focus on high-quality sound and reliable performance. The D Debra brand is known for its exceptional audio equipment, and the AU400 Pro is no exception. With its 4 channels and wireless design, it is perfect for large productions and live performances. Whether you're a musician or a professional audio technician, the D Debra Audio AU400 Pro UHF 4 Channel Wireless Microphone System is a must-have for any setup.