Amazon.com: BOSS Audio Systems MC900B Amplifier for ATV UTV Car Marine - 500 High Output, 4 Channel, 2/4 Ohm, Bluetooth Multi-Function Remote, RCA Out, Weatherproof, Use Amp with Stereo and Subwoofer, Crossover : Electronics
Skar Audio Dual 12" Complete 5, 000 Watt Subwoofer Bass Package - Includes Subwoofers in Ported Box with Amplifier
Amazon.com: BOSS Audio Systems R1100M Riot Series Car Audio Subwoofer Amplifier - 1100 High Output, Monoblock, Class A/B, 2/4 Ohm Stable, Low/High Level Inputs, Low Pass Crossover, Mosfet Power Supply, Stereo :
Amazon.com: Skar Audio Single 12" Complete 1,200 Watt SDR Series Subwoofer Bass Package - Includes Loaded Enclosure with Amplifier : Electronics
BOSS Audio Systems PV3700 5 Channel Car Stereo Amplifier – 3700 High Output, 5 Channel, 2/4
Amazon.com: Kicker 46CXA18001 CXA18001-1800-Watt Mono Class D Subwoofer Amp : Electronics
Nobsound NS-03G Subwoofer Amplifier 100W Mini SUB Power Amp
Amazon.com : Sound Storm Laboratories LOPRO8 Amplified Car Subwoofer - 600 Watts Max Power, Low Profile, 8 Inch Subwoofer, Remote Subwoofer Control, Great For Vehicles That Need Bass But Have Limited Space,
BOSS Audio Systems CUBE10 Car Subwoofer and Amp Package – Built-in Amplifier, 10 Inch Subwoofer with
Amazon.com: Fosi Audio BT20A Bluetooth 5.0 Stereo Audio 2 Channel Amplifier Receiver Mini Hi-Fi Class D Integrated Amp 2.0 CH for Home Speakers 100W x 2 with Bass and Treble Control TPA3116 (