The system provides all that you will need. The 15" woofer and integrated 1" tweeter produce excellent high-fidelity sound and the pulsing colors add to the overall experience by pulsating in beat with the music. The multi-channel mixer has two microphone inputs and an auxiliary line input. Comes with Bluetooth input and the USB port. The ION Block Rocker is lightweight and has wheels to make transporting the block rocker quick and easy.