NVX QBSTA 900W Max (300W RMS) 11" Powered Spare Tire Subwoofer Box with Built-in Amp and Remote Bass Knob, Easy to Install in Cars
NVX VAD10004 4-Channel Full-Range Class D Amplifier 2000W Max, 1000W RMS High Power, 2/4-ohm Stable, High/Low Pass X-Over, for Car/Truck/Marine/UTV/Motorcycle
NVX VAD8402v2 2-Channel Class D Amplifier 1680W Peak, 840W RMS, 2/4-ohm Stable, High/Low Pass X-Over, Bass Boost, for Car/Truck/Marine/UTV/Motorcycle (VAD8402 Version 2)