1.888.955.6000
 
 

Infinity Reference 475a vs Rockford Fosgate Prime R400-4D

 
Infinity Reference 475a
In Stock 
$149.99
  • 90 watts RMS x 4 at 2 ohms
  • 180 watts RMS x 2 in bridged mode
  • variable high- and low-pass filters
Add to Cart
Rockford Fosgate Prime R400-4D
In Stock 
$249.99
  • 200 watts RMS x 2 bridged
  • variable high- and low-pass filters
  • preamp inputs and outputs
Add to Cart

Product Features

Hide similar features
Condition New StockNew Stock
Performance Infinity Reference 475aRockford Fosgate Prime R400-4D
RMS Power Output (Wt x Channels)
Loading...
75 x 4
75 x 4
Peak Power Output (Wt x Channels)
Loading...
117 x 4---
Power at 2 Ohms (Wt x Channels)
Loading...
90 x 4100 x 4
Bridged Power (Wt x Channels)
Loading...
180 x 2200 x 2
Minimum Impedance Bridged
Loading...
44
Minimum Impedance Unbridged
Loading...
22
Best Frequency Response
Loading...
10-100k Hz20-20k Hz
THD at Rated RMS Power
Loading...
1%1%
Signal to Noise Ratio
Loading...
85 dB90 dB
Input Voltage
Loading...
14.4v14.4v
Features Infinity Reference 475aRockford Fosgate Prime R400-4D
Amplifier Class
Loading...
ABD
Low-Pass Crossover Frequency
Loading...
32-320 Hz50-250 Hz
Low-Pass Slope (dB/octave)
Loading...
12 dB12 dB/oct
High-Pass Crossover Frequency
Loading...
32-320 Hz50-250 Hz
High-Pass Slope (dB/octave)
Loading...
12 dB12 dB/oct
Bass Boost
Loading...
0-6 dB0-18 dB
Bass Boost Frequency
Loading...
50 Hz45 Hz
Fan Cooled
Loading...
NoNo
Fuse Rating
Loading...
7040
Speaker Level Inputs
Loading...
NoNo
Preamp Outputs
Loading...
1 pair1 pair
Width (inches)
Loading...
99-1/8
Height (inches)
Loading...
2-11/162
Depth (inches)
Loading...
14-3/47-3/8
Parts Warranty
Loading...
1 Year1 Year
Labor Warranty
Loading...
1 Year1 Year
  Owner's ManualOwner's Manual
 Hands-on ResearchHands-on Research
 
Infinity Reference 475a
In Stock 
$149.99
Add to Cart
Rockford Fosgate Prime R400-4D
In Stock 
$249.99
Add to Cart

Video: Car Amplifier PowerWe describe the basics of deciding how much power an amplifier should have when you're trying to match it to your speakers or subwoofers.

Video: Car Amplifier ChannelsOne of the first steps in choosing an amplifier for your car audio system is to decide how you intend to use the amplifier, and thus how many channels it should have. This short video gives you a quick overview to help answer that question.