The BG-220 is 20W Mixer/Amplifiers. Its model offer a simple and cost-effective solution for adding powered zones to an existing system as well as powering speakers in applications that require a line input from a mix or playback source. Using the perfected amplifier technology and bullet-proof construction that has made TOA an industry standard, the BG-200 Series Mixer/Amplifier is designed to make sound projects affordable, reliable and easy to install.