Planet Audio P8AWK Low Profile 8 Inch Under Seat Powered Car Subwoofer - 800 High Output, Built-in Amplifier, for Truck, Boxes and Enclosures, Remote Subwoofer Control

Planet Audio PL4000.1D Pulse Series Class D Monoblock Car Amplifier – 4000 High Output, 1 Ohm Stable, Low Level Inputs, Low Pass Crossover, MOSFET, Hook Up to Subwoofer for Bass

Planet Audio AC4000.1D Anarchy Series Car Audio Amplifier - 4000 High Output, Class D, Monoblock, 1 Ohm Stable, Low Level Inputs, Low Pass Crossover, Hook Up To Stereo and Subwoofer

Planet Audio AC3000.1D Anarchy Series Car Amplifier - 3000 High Output, Class D, Monoblock, 1 Ohm, Low Level Inputs, Low Pass Crossover, Mosfet Power Supply, Hook Up To Stereo and Subwoofer

Planet Audio AC2000.2 Anarchy Series Car Audio Amplifier - 2000 High Output, 2 Channel, 2/8 Ohm, High/Low Level Inputs, High/Low Pass Crossover, Full Range, Hook Up to Stereo and Subwoofer,Black