Amazon.com: KENWOOD X502-1 eXcelon 500-Watt @ 2 Ohms Class D Subwoofer Amplifier | Plus KENWOOD eXcelon P-XW1221DHP 2-ohm Ported Enclosure with Two 12" Subwoofers : Electronics
Memphis Audio SRX500D.1 Street Reference Series Mono Subwoofer Amplifier 500 Watts RMS @ 2 -Ohms Remote Bass Knob Included - Used Very Good - Creative Audio
JL Audio JD500/1 500 WATT Class D Monoblock Subwoofer Amplifier - EAI - Pascagoula
Sale 500w Ma-150 Dc9-14v 2-ch Mini Hi-fi Stereo Audio Amplifier Amp Subwoofer For Car Motorcycle - Home Theater Amplifiers - AliExpress
Rockford Fosgate - Two P1S4-10 Punch 10" Subwoofers and a R2-500X1 500-Watt Prime Series Amplifier - Creative Audio
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
AudioControl RS 500 500-watt subwoofer amplifier with DSP at Crutchfield
Coustic By MTX C124 12" 500 Watt High Performance Subwoofer+Amplifier+Amp Kit - Walmart.com
Amazon.com: Audiopipe APSB-1299PP Dual 12 Inch Car Audio Subwoofer Speakers and Sealed Enclosure, 2 Channel 500 Watt Amplifier, and Wire Installation Kit : Electronics