Amazon.com: MTX TN8MS Terminator 8 Inch Micro Compact Amplified Subwoofer Enclosure for Small Vehicles with Class A/B Amplifier, Variable Bass Boost, External Bass Control, and Smart Engage Auto Turn On Circuitry :
Amazon.com: uxcell DC 12V 24V 35W Hi-Fi Audio Bass Subwoofer Stereo Power Amplifier Board for Auto Car : Automotive
JBL Club A600 Club Series mono subwoofer amplifier — 600 watts RMS x 1 at 2 ohms at Crutchfield
JBL BassPro Micro at Onlinecarstereo.com
JBL BassPro Micro Class D 140 Watts RMS Powered Subwoofer, Amplifier Wiring Kit | eBay
Amazon.com: MTX TN8MS Terminator 8 Inch Micro Compact Amplified Subwoofer Enclosure for Small Vehicles with Class A/B Amplifier, Variable Bass Boost, External Bass Control, and Smart Engage Auto Turn On Circuitry :
Audio Control ACM-1.300 Monoblock Micro Amplifier with Accubass® – Shop Audio Depot