Your karaoke evening starts with the LTC ATM7000USB-BT amplifier. Via Bluetooth you can easily stream music from your phone or tablet to the amplifier. When there is no music on your Bluetooth device, plug a USB stick or SD card into the amplifier. The amplifier has 2 inputs for microphones. So you sing your favorite songs together with your friends. Can your voice use something extra? Thanks to the echo, bass, treble and balance effects you change your voice. You control the amplifier with the buttons on the device or with the included remote control.