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The DI550.4 is a full-range Class-D 4-channel car amplifier delivering up to 1040 Watts max power with stable operation from 2 to 4 Ohms. Featuring a high-speed MOSFET power supply, premium internal components, and 4-way protection circuitry, it ensures reliable, high-performance audio. User-adjustable controls and efficient heatsinks make it versatile and cool-running for extended use.

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