Hercules XPS 2.1 20 2.1 Multimedia Speakers (Black) 2.1 speaker kit : 2 satellites + wooden subwoofer Total output power: 10 Watts RMS (2 x 2.5 W + 5W) and 20 Watts Peak Power Wired remote control: Volume control knob on the remote control. Line input and headphones connector on the remote control. MP3 player connector plug Wooden subwoofer with bass volume control