Your karaoke evening starts with the LTC ATM6100MP5-HDMI amplifier. Via Bluetooth you can wirelessly stream music from your phone or tablet to the speaker. When there is no music on your Bluetooth device, plug your USB stick or SD card into the amplifier to play your favorite songs. The amplifier has an HDMI input to connect a TV. When you play a karaoke clip via YouTube, the lyrics appear on the screen. So you and your friends sing the stars of the sky in the included microphones. Thanks to the echo effect in the microphones, it sounds like you are in a concert hall. You control the amplifier with the buttons on the device or with the included remote control.