Product Description The Genius Audio ZR100.4D is a compact 4-channel Class D full-range amplifier designed for car audio systems that need strong output, efficient operation, and flexible installation options. It is stable down to 2 ohms in stereo and can also be bridged at 4 ohms, making it suitable for powering multiple speakers or higher-power component systems. Despite its compact chassis, the ZR100.4D delivers up to 400 watts RMS bridged at 14.4V, along with adjustable high-pass and low-pass crossover controls from 40 Hz to 3 kHz. Its heavy-duty aluminum heat sink, thermal protection, and multiple electrical protection circuits help ensure reliable operation in demanding installations. Main Features Feature Specification Product Type 4-Channel Full-Range Amplifier Amplifier Class Class D Channels 4 Minimum Stereo Impedance 2 Ohms Minimum Bridged Impedance 4 Ohms Crossover Modes LPF / HPF / FULL High-Pass Filter 40 Hz – 3 kHz Low-Pass Filter 40 Hz – 3 kHz Crossover Slope 12 dB Input Sensitivity Low: 0.3–9.5 V / High: 1.6–27 V LED Indicator Power / Protection Heat Sink Heavy-Duty Aluminum Finish Black Aluminum Power Output Power @ 14.4V Configuration RMS Power 4 Channels @ 4 Ohms Stereo 137 W x 4 4 Channels @ 2 Ohms Stereo 187 W x 4 2 Channels @ 4 Ohms Bridged 400 W x 2 4 Channels @ 2 Ohms Stereo — Burst 234 W x 4 Electrical Specifications Specification Rating Minimum Supply Voltage 8 V Maximum Supply Voltage 16 V Idle Current @ 12.6V 0.8 A Maximum Musical Consumption @ 12.6V 28.5 A Maximum Sinusoidal Consumption @ 12.6V 57 A Recommended Fuse 50 A Recommended Minimum Battery 50 Ah Dimensions Measurement Imperial Metric Length Approx. 9 11/16 in 24.6 cm Width 4 1/4 in 10.8 cm Height Approx. 1 3/4 in 4.5 cm Complete Dimensions 9 11/16 × 4 1/4 × 1 3/4 in 24.6 × 10.8 × 4.5 cm
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