BMB DAR-350HD4 700W 4CH/2CH Karaoke Mixing AmplifierThe new DAR 350HD4 gives you an option to power up to 4 speakers (175W RMS per channel) or 2 speakers (350W RMS per channel). This machine has been rigorously tested for quality and can play many hours reliably easily making the DAR 350HD4 perfect for karaoke venues. With simple connections like the HDMI and the Optical inputs, the DAR 350HD4 can be setup for Youtube karaoke. This advanced system will make sure your audio comes through flawlessly.