Pioneer GM-A4704 - 520 Watts 4 Channel Bridgeable Car Stereo Amp AmplifierPioneer GM A4704 Car Stereo Radio 520 Watts Max 4 Channel Bridgeable Car Amplifier From dramatic distinction to dramatic design, Pioneer's new GM Series amplifiers are thrillers in every sense, pushing the limits of flexibility and functionality. Give into your deepest desire for power. Work it out how you want with the bridgeable amps. Just consider the consequences whatever you do: pure and clean, distortion free power. The GM A4704 will ignite your