Sony Xplod XM-1652Z Car Audio Amplifier Recommendations

Adding an amplifier to a vehicle???s factory system is one of the best upgrades that can be done. To make it as simple as possible, all Sony amps include a hi-level input. This speaker-level connection can take the signal that normally drives the factory speakers, and uses it as the input to the Sony amplifier. No preamp output is required from the factory system. Simple!