4-Channel full-range amplifier with on-board electronic crossover and variable bass boost.The Reference 475a's high-output PWM MOSFET power supply ensures optimum power delivery into numerous impedances with low distortion. A variable bass boost circuit is provided to optimize the low fequency performance of your system. Full range preamp outputs are provided facilitating multiple amplifier hookups without the need for costly Y-adapters or signal splitters. The 475a comes outfitted with a variable 12dB per octave electronic crossover allowing you to optimize system tuning based on speaker location and accompanying loudspeaker components
