JBL Stage 3001 Full-Range Car Audio 300W RMS Class D Mono Subwoofer Amplifier Bundle Combo with JBL Club WS1000 800W 10" Club Series 2 or 4-Ohm Selectable Shallow-Mount Car Audio Subwoofer -
Harman Jbl Four-channel Amplifier Stage-a9004, Ab Hifi Auto Audio 90w 2ohm 110w 4ohm, Audio Boost - Transformers - AliExpress