The HiFonics ZXR600/2 is a two-channel car speaker amplifier designed for high-quality sound systems. This amplifier delivers 2 x 175 watts RMS at 4 ohms, 2 x 300 watts RMS at 2 ohms, or can provide 1 x 600 watts RMS at 4 ohms in bridged mode for powerful subwoofer applications. With dimensions of 150 mm in width, 50 mm in height, and 233 mm in depth, the compact Class-D design offers excellent power density with efficient operation over 90 percent efficiency, reducing the load on the vehicle's electrical system. The frequency response ranges from 5 Hz to 50 kHz with exceptional sound quality, a signal-to-noise ratio over 90 dB, and minimal distortion. The input sensitivity ranges from 0.2 volts to 6 volts, accommodating various source devices. Extensive filter functions include a low-pass filter from 50 Hz to 5000 Hz, a high-pass filter from 10 Hz to 500 Hz, and a bass boost at 45 Hz from 0 dB to 18 dB. A wired bass remote input allows convenient volume control from the driver's seat. The screw-mounted RCA inputs and outputs, as well as the EPS high-level input, enable direct connection to factory speakers without vehicle system errors. The electromagnetic compatibility is carefully designed to avoid interference with radio reception. The silver finish with blue backlighting of the HiFonics logo is constructed to meet the demands of automotive environments.