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JL Audio 300/4 Full Range Car Amplifier Silver Black LED Indicators 4.0-Channel

JL Audio 300/4v2 4-Channel Car Audio Amplifier

PRV MDX1200.4 2 Ohm Mini 4 Channel Amp 4x 300 Watts Compact Car Audio Amplifier

Rockford Fosgate Punch P4004 4-Channel Car Amplifier 400W RMS USA TESTED WORKS

Alpine S-A32F 4-Channel Car Audio Power Amplifier for Vehicle Stereo System