KICKER CX400.1 400 Watt Class D Mono Amplifier Car Audio Subwoofer Amp – Car Toys
Rockford Fosgate TM400X2ad Power Series 400 Watt (RMS) 2-Channel Marine Amplifier - Rock The Boat Audio
Amazon.com: BOSS Audio Systems BE8AE Elite Series Car Audio Amplifier 8 Inch Subwoofer Package – 400 Watt Sub with Passive Radiator, Built-in Class D Monoblock Amplifier, for Truck Boxes and Enclosures Stereo :
Mtx Tnp212d2 12-inch 400-watt Rms Dual Loaded 1200-watt Car Subwoofer Enclosure Audio With Sub Box And 250-watt Mono Block Amplifier : Target
Amazon.com: KICKER 46CXA4001T CXA400.1 400 Watt RMS Mono Class D Car Audio Amplifier Amp : Electronics
Avante Imperio Sub - (IMP400) 10-inch, 400 Watt Subwoofer with Class D Digital Amplifier
Dual Electronics SBP270 400 Watt Amplifier and 10" Subwoofer with Enclosure Combo Pack - Walmart.com