In Phase USW300 300W Underseat Subwoofer - Active Car Subwoofer with Built-in Amplifier
VEVOR Monoblock Car Amplifier, 400W RMS MAX, 1/2/4 Ohm Stable, 1-Channel Class D Car Audio Amplifier with Remote Subwoofer Level Control, Low Pass Filter, Bass Boost & Phase Shift, Volume Controller
