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infinity reference 551a 550w x 1 car amplifier: unleash power and performance on the road logo

Infinity Reference 551a 550W x 1 Car Amplifier: Unleash Power and Performance on the Road Review

5

Β·

Excellent

Revainrating 5 out of 5Β Β 
RatingΒ 
5.0
πŸš— Car Electronics, πŸš— Car & Vehicle Electronics

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Details

Item Dimensions LxWxH11.5 x 9.25 x 4.25 inches
ManufacturerInfinity
BrandInfinity

Description of Infinity Reference 551a 550W x 1 Car Amplifier: Unleash Power and Performance on the Road

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Reviews

Global ratings 5
  • 5
    5
  • 4
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  • 3
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  • 2
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  • 1
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Type of review

Revainrating 5 out of 5

Boom boom boom boom

I really like it. Hooked up to a down-firing kicker 12" passive radiator. The sound is so good. Lots of bass for me.

Pros
  • Beautiful
Cons
  • Annoying

Revainrating 5 out of 5

Powerful, compact amp

This thing can pump juice, that's for sure. Easily powers my 2 12" MTX subwoofers and for the price you can't beat this amp.

Pros
  • amp
Cons
  • Communication with seller

Revainrating 5 out of 5

Fantastic sound in Car Audio

Amazing amp. Perfect at what it does. I finally connected my Infinity 120.9W Kappa subwoofer to it. This combo is a beast. You won't win SPL competitions, but you can't beat the sound quality.

Pros
  • Car Audio
Cons
  • Upgradeable

Revainrating 5 out of 5

Best value for money

Excellent amplifier for a pair of subwoofers. This isn't one of those amps that is all about performance. Definitely a good alternative to high-end amps at a great price. I use this and 4 channel 704a. Both work great!

Pros
  • Car electronics
Cons
  • I don't remember but there was something

Revainrating 5 out of 5

Probably the best budget amp on the market

Excellent amp. It and the JBL Club 5501 use the same Harman Kardon amplifier circuit. I'm sure there is another high end model that uses the same board as both amps have features not listed anywhere in their literature which both JBL and Infinity dispute. In particular, the Reference 551a and Club 5501 are able to receive an audio signal for switching on and off instead of using a dedicated remote line. They can also deliver slightly more power than rated, which is fairly rare. I don't think…

Pros
  • Multi-channel amp
Cons
  • Compatibility