D Debra Audio D-440 Karaoke set is equipped with 4 wireless microphones and a receiver. There are 4-channel receivers with handheld microphones or lavalier microphones or headset microphones. Perfect for party, karaoke KTV, church, weddings, DJ, outdoor, stage, etc. High-quality dynamic cardioid capsules are specially developed to limit feedback and interference. Built-in high-quality chip, microphone can provide clear and real sound. The 4-channel UHF wireless microphone receiver has 4 receiving antennas to improve the received signal. The high-quality test adopts anti-noise and anti-interference technology, which can remove the distortion. Sound and sound quality up to 300 feet. The all-metal receiver has independent volume control to achieve precise voice balance, and has a 6.35 mm (1/4 inch) audio output jack and 4 XLR outputs for easy installation. Suitable for all active PA speaker systems/amplifiers/mixers, etc. Standard size, the receiver is suitable for 19 standard rack. You Will Gget: receiver1, microphone4, 6.35mm TS cable1, AC/DC power supply1, manual1, customer service card1. Dual receiving antennas are more convenient to use, and the signal is more stable and ultra-long-distance reception. In open space, the effective operational distance is up to 300ft. High Quality Microphone Core. The cardioid polar microphone is specially modulated for the human voice, highlighting the penetrating power of high-pitched sound without losing the sense of bass. Good Quality & Durable. Reasonable and user-friendly subdivision design is more beneficial to use and reduce failures to ensure stable quality. Using AA batteries, the battery life can reach 4-6 hours. You Can Use It For. What Will You Get. 2 Handheld & 2 Bodypack.