Power Acoustik CPT1-2200D Mono Block 2200 Watt 1 Ohm Stable Class D with Dash Mount Remote Gain Control, Phase Switch and Selectable 45Hz Bass Boost Power Acoustik CPT1-2200D Mono Block 2200 Watt 1 Ohm Stable Class D with Dash Mount Remote Gain Control, Phase Switch and Selectable 45Hz Bass Boost