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RetroSound Quad4

Add-on amplifier for RetroSound radios — 45 watts RMS x 4 channels

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  • RetroSound Quad4

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  • RetroSound Quad4

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Our take on the RetroSound Quad4

by Bob Bihlmayer
Retrosound

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

More power, Captain

You've got a classic car with a RetroSound radio installed, but you want more power for your front and rear speakers. Enter the RetroSound Quad4, an ultra-compact 4-channel amplifier rated at 45 watts RMS per channel, which offers plug-and-play hookup to any RetroSound radio. You can connect other aftermarket car stereos via the Quad4's low-level RCA inputs.

Big sound, small package

At roughly the size of a large candy bar, the tiny Quad4 delivers a mighty sound, while its dimensions allow mounting almost anywhere, including under seats and behind the dash. If you're using a sub in your classic ride, you can activate the built-in high-pass filters to remove the low bass from your full-range speakers so they play louder and cleaner. The Quad4 also features advanced thermal and short-circuit protection so you'll be able to enjoy your sound for years to come.

Highlights:

  • ultra-compact 4-channel amplifier
  • plug-and-play connection for RetroSound radios
  • 45 watts RMS (55 watts peak power) x 4 channels
  • frequency response: 10-40,000 Hz
  • advanced thermal and short-circuit protection
  • direct connection to all RetroSound radios
  • high-pass filter: 12 dB/octave at 110 Hz
  • dimensions: 7-3/16"W x 2-7/8"D x 1-3/4"H
  • warranty: 1 year
  • Our 60-day money-back guarantee
Preliminary info from the manufacturer
Features and Specs
Performance
RMS Power Output (Watts x Channels)
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45 x 4
Peak Power Output (Watts x Channels)
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---
Power at 2 Ohms (Watts x Channels)
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---
Bridged Power (Watts x Channels)
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---
Minimum Impedance Bridged
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---
Minimum Impedance Unbridged
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4
Best Frequency Response
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---
THD at Rated RMS Power
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---
Signal to Noise Ratio
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Input Voltage
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Features
Amplifier Class
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D
Low-Pass Crossover Frequency
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---
Low-Pass Slope (dB/octave)
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---
High-Pass Crossover Frequency
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110 Hz
High-Pass Slope (dB/octave)
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12 dB/octave
Bass Boost
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---
Bass Boost Frequency
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Fan Cooled
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Fuse Rating
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15
Speaker Level Inputs
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Harness
Preamp Outputs
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No
Width (inches)
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7-3/16
Height (inches)
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1-13/16
Depth (inches)
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2-15/16
Parts Warranty
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1 Year
Labor Warranty
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1 Year
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RetroSound Quad4 Reviews

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5 out of 5

Retrosound Quad4 amp

Written By ScottM, Massachusetts on Wednesday, June 18, 2014
Crutchfield Customer Review (What's this?)
 
Nice little amp that goes well with retrosound stereo already installed in my ride
Pros:
Simple add on installation to Retrosound stereo, simply remove speaker and control jacks from stereo and plug amplifier in its place, reconnect the jacks and add a power circuit and enjoy!
Cons:
None to date.
1 out of 1 people found this helpful
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For a more in-depth review and enhanced detailed information on the RetroSound Quad4, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_068QUAD4/RetroSound-Quad4.html ).