Mini Car Amplifier, ELEGIANT Class-T Super Bass Hi-Fi Stereo Audio Digital Amplifier Booster with Power Supply DC 12V 3A Sliver Aluminum alloy solid case and also easy to distribute the heat Tripath TA2020 amplifier chip provides efficient, powerful sound Over-voltage protection circuit shuts down amplifier should input voltage exceed 14.4 volts DC Built-in loudspeakers protection circuit triggers when the amplifier is turned on to protect speakers from high volume bursts of audio State of the art design using surface mount components and advanced engineering for proven performance, reduced signal interference, and long operational life