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The Kicker 51LX5004 is a four-channel car amplifier from Kicker's LX line, built for systems that need clean power and flexible signal handling. It uses FIT+ circuitry that accepts low- and high-level inputs up to 40V with fully differential inputs to reject noise, and it offers selectable turn-on modes plus thermal, circuit and voltage protection. It suits owners upgrading factory audio or building an active front stage who want a DSP-ready amp they can monitor and control remotely. Against simpler four-channel amps, its high-voltage input range and remote control set it apart; against premium DSP amps, it relies on external processing rather than built-in tuning.
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Lowest price we've seen: $479.96 on Nov 13 at Crutchfield. Tracked across 13 stores since Nov 13.
The Kicker 51LX5004 is a 4-channel car audio amplifier from the LX series. It is engineered in the USA for car-audio systems that call for high power, flexible system design, and DSP-powered features. It can also be monitored and controlled remotely.
The amplifier uses FIT+ (Fail-safe Integration Technology-PLUS). It accepts low- and high-level signals up to 40V. Its full differential inputs are designed to eliminate noise. You can choose the turn-on mode, and it has protections for thermal, circuit, and voltage stability.
