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

Rockford Fosgate TM400X4AD 400W 4 Channel Power Marine Amplifier

Rockford Fosgate Punch 100? / MPN Punch 100? 2-Channel Car Audio Amplifier

DEFECTIVE - Pioneer GM-DX874 4-Channel Bridgeable Amplifier

Sony XM-3546 4-Channel ES Car Stereo Amplifier

Memphis MXA300.4 300W RMS 4-Channel Amplifier

Pioneer GM-DX874 4-Channel Bridgeable Amplifier GMDX874 NO BASSKNOB

Kenwood KAC-531 300W RMS Mono Class D Car Audio Amplifier DISPLAY UNIT UNTESTED