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The DI550.4 is a full-range Class-D 4-channel car amplifier delivering up to 1040 Watts max power. It supports stable 2-4 Ohm loads, features a high-speed MOSFET power supply, and offers adjustable controls for gain, filters, and bass EQ. Its efficient heatsinks and 4-way protection circuitry ensure reliable, cool operation for hours of premium audio performance.

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