1、Excellent Metal Material: This digital sound effector is made of excellent quality metal material which is long lasting and durable. It is designed to consistently deliver a superior sound experience. 2、Built In Microphone: This digital sound effect processor has a built in microphone for superior sound quality and an incredible sound and video experience, allowing you to mix sounds with ease and accuracy. 3、Wireless Bluetooth Playback: This karaoke sound processor uses wireless bluetooth playback, stable transmission, no delay, lossless sound quality, supports most bluetooth devices on the market. 4、99 DSP Preset Effects: This karaoke mixer features 99 DSP preset effects to simulate the environmental sounds of churches, small, medium and large rooms, stadiums, etc. with clear results. 5、Easy To Use: This digital mixer is easy to operate with a simple on and off system. It's perfect for beginners and professionals. Its compatibility with a wide range of devices makes it the perfect sound distributor and mixer.