The RCA low-level inputs on the 475a have allow for connection to both a preamp level signal and direct connection to a high-level factory head unit.

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.

A variable bass boost circuit is provided to optimize the low frequency 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 Reference 475a's high-output PWM MOSFET power supply ensures optimum power delivery into numerous impedances with low distortion.

Specification

• RMS Power Range : 4x75 Watts
• Number Of Channels: 4
• Low Frequency response: 20 Hz
• High Frequency Response: 20000 Hz
• Built In Crossovers: Yes
• Channel Separation: Yes

Features

• 4-channel car amplifier
• RMS Power @ 4 ohms: 75 watts x 4
• RMS Power @ 2 ohms: 90 watts x 4
• RMS Power @ 4 ohms bridged: 180 watts x 2
• CEA-2006 compliant
• Variable high- and low-pass filters (32-320 Hz, 12 dB/octave)
• Variable bass boost (0-6 dB at 50 Hz)
• Class-AB amplifier design
• MOSFET power supply
• Preamp-level inputs and outputs
• Fuse rating: 35A x 2
• Maximum Input Signal: 6V
• Maximum Sensitivity: 100mV
• 14-3/4"W x 2-11/16"H x 9"D