XLCA2X X-Series PRO 2-Channel Line Out Converter Digital Bass Enhancer with xBOOST, Impedance Matching, and Remote Level Control

NVX XLCA2X X-Series PRO 2-Channel Line Out Converter Digital Bass Enhancer with xBOOST, Impedance Matching, and Remote Level Control

NVX VADM2v2 2-Channel Class D Amplifier 1200W Peak, 600W RMS, 2/4-ohm Stable, High/Low Pass X-Over, for Car/Truck/Marine/UTV/Motorcycle (VADM2 Version 2)

NVX NDA101 1000W MAX Power (500W) RMS N-Series Class-D 1-Ohm Stable Monoblock Subwoofer Amplifier with Included Bass Remote Knob