Infinity Kappa Four vs Infinity Reference 475a

 
Infinity Kappa Four
Low Stock 
$449.99
  • 300 watts RMS x 2 in bridged mode
  • variable high-pass/low-pass filters
  • preamp and speaker-level inputs
Add to Cart
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

Product Features

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Condition New StockNew Stock
Performance Infinity Kappa FourInfinity Reference 475a
RMS Power Output (Wt x Channels)
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125 x 4
75 x 4
Peak Power Output (Wt x Channels)
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300 x 4117 x 4
Power at 2 Ohms (Wt x Channels)
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150 x 490 x 4
Bridged Power (Wt x Channels)
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300 x 2180 x 2
Minimum Impedance Bridged
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44
Minimum Impedance Unbridged
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22
Best Frequency Response
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10-75k Hz10-100k Hz
THD at Rated RMS Power
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1%1%
Signal to Noise Ratio
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85 dB85 dB
Input Voltage
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14.4v14.4v
Features Infinity Kappa FourInfinity Reference 475a
Amplifier Class
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DAB
Low-Pass Crossover Frequency
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32-320 Hz32-320 Hz
Low-Pass Slope (dB/octave)
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12 dB/oct12 dB
High-Pass Crossover Frequency
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32-320 Hz32-320 Hz
High-Pass Slope (dB/octave)
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12 dB/oct12 dB
Bass Boost
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0-12 dB0-6 dB
Bass Boost Frequency
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50 Hz50 Hz
Fan Cooled
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NoNo
Fuse Rating
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8070
Speaker Level Inputs
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RCA (adapter req)No
Preamp Outputs
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No1 pair
Width (inches)
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14-5/89
Height (inches)
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1-3/42-11/16
Depth (inches)
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7-1/814-3/4
Parts Warranty
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3 Years1 Year
Labor Warranty
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3 Years1 Year
  Owner's ManualOwner's Manual
 Hands-on ResearchHands-on Research
 
Infinity Kappa Four
Low Stock 
$449.99
Add to Cart
Infinity Reference 475a
In Stock 
$149.99
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.