Excalibur X600.4 4-Channel MOSFET Car Amplifier for Speakers 60W x4 / 180W x2 RMS, 2400W Max, 2 Ohm stable, variable HPF/LPF crossover, bass boost, 20Hz-20kHz, tri-mode

MOSFET Four-Channel Power: Delivers 60W RMS x4 at four ohms or bridges to 180W RMS x2, giving real usable power to door speakers and a subwoofer from one compact amplifier Tri-Mode Flexible Wiring: Supports four full-range speakers, two speakers plus a subwoofer, or two bridged subs — one amp replaces multiple components and adapts to any car audio setup Variable HPF and LPF Crossover: Adjustable high-pass and low-pass filters combined with a 12 dB bass boost let you dial in precise tone without needing a separate equalizer or processor Factory Head Unit Compatible: Wide sensitivity range of 150 mV to 8 V accepts low-voltage OEM signals and aftermarket deck outputs, so no new head unit is required for a clean install Built-In Circuit Protection: Three-way protection with 2 x 25A fuses defends against overloads, short circuits and overheating, while ribbed heatsink fins provide passive thermal cooling