MB Quart PA1-2400.4 Premium Pro 2400 Watt 4-Channel Amplifier is a full-range Class D car audio amplifier built to deliver high power from a compact chassis. Its four channels can run four speakers or be bridged to two mono channels, so it can drive a full system or a pair of subwoofers.

RCA and high-level inputs let it connect to aftermarket head units or factory audio systems, while the switched HPF/Full/LPF crossovers on every channel pair give you control over which frequencies reach each speaker. The extruded aluminum heatsink with built-in fans manages heat so the amplifier can run at lower impedance for longer, and the three-stage protection circuitry monitors thermal, overload, DC, and speaker short conditions.