Small and mean. The GM-A4704 combines high-class design and massive power with minimal distortion, offering maximum flexibility in installation. Its one-piece heat sink housing and up to 6.5 V input voltage make it the ideal component for the sound stage you have always wanted to experience in your vehicle. This 4-channel amplifier can drive multiple speakers and subwoofers, but it can also be bridged to power a single subwoofer with its full power.