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Infinity REF551A


Price $239
New Infinity Reference amplifiers deliver pure power from a slim, compact chassis that’s designed to fit in more vehicles. Available in 4-channel, 5-channel, and mono models, Reference amps incorporate our latest amplifier topology, include variable electronic crossovers and bass boost control for precise system tuning, and feature high- and low-level inputs for easy interface with virtually any system. They’re also compatible with several new vehicle technologies, including many advanced driver assistance systems, and Harman HALOsonic, a suite of acoustic solutions that can simulate engine sounds for a better driving experience in hybrids and electric cars, cancel road noise for better-sounding music, and more. *Installation Available


The Details:

  • mono subwoofer amplifier
  • 370 watts RMS x 1 at 4 ohms (550 watts RMS x 1 at 2 ohms)
  • Class D amp technology
  • variable low-pass filter (32-320 Hz, 12 dB/octave)
  • variable bass boost (0-9 dB at 45 Hz)
  • phase switch (0, 180 degrees)
  • preamp and speaker-level inputs
  • fuse rating: 30A x 2
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 9-3/8″W x 2-1/4″H x 7-5/16″D
  • warranty: 1 year

What Our Customers Are Saying...

Delbert D. Walls Jr.
2022-08-27
Nothing but good things to say about this location! I've brought multiple vehicles here, old and new, for different services and Thom has always got me together! Highly recommended!
Mark Waddle
2022-08-25
Great service and good price’s. Looks like it was factory installed and sounds great
Drew Rose
2022-08-23
Brian and Tom are awesome! The installers here are amazing as well. Don’t forget to tip your installer
Denise Varitek
2022-08-23
Very satisfied with the blind side alert system installed on my car. Staff was very professional and knowledgeable.
Wesley Kasperski
2022-08-23
They are the best in the business!
Darin Lauer
2022-08-22
This was the 7th vehicle I’ve taken to CarTunes in Allen Park for window tint. As with the other six… they did a great job again! Quality work, great price, friendly people.
Mark Counsel
2022-08-14
They built me a custom sounds system from top to bottom and explained to me about what to expect from my system. All of the staff was very helpful.