JBL Stage A3001 Mono subwoofer amplifier — 300 watts RMS x 1 at 2 ohms at Crutchfield
JBL Stage 3001 Full-Range Car Audio 300W RMS Class D Mono Subwoofer Amplifier Bundle Combo with JBL Club Marine 10" Marine Audio Multi-Element White LED Subwoofer (Bulk Packaging) - Road Entertainment
JBL GT5-A3001 at Onlinecarstereo.com
JBL STAGE1200S 1-12" Loaded Subwoofer Enclosure with JBL STAGE A3001 300 Watt Mono Amplifier and Wiring Kit - Creative Audio