Christmas cut off: The Christmas delivery cut-off date has passed. Delivery before Christmas is not guaranteed. For the best chance of receiving your order in time, please select Express shipping.
Please be advised that our website will undergo maintenance at 5:00 PM. We expect to be back online by 7:00 PM. During this time, the website may not function at full capacity.
Our last trading day before the holidays is 20th December, and we will reopen on 13th January.
Christmas cut off: The Christmas delivery cut-off date has passed. Delivery before Christmas is not guaranteed. For the best chance of receiving your order in time, please select Express shipping.
Please be advised that our website will undergo maintenance at 5:00 PM. We expect to be back online by 7:00 PM. During this time, the website may not function at full capacity.
Our last trading day before the holidays is 20th December, and we will reopen on 13th January.
Christmas cut off: The Christmas delivery cut-off date has passed. Delivery before Christmas is not guaranteed. For the best chance of receiving your order in time, please select Express shipping.
Please be advised that our website will undergo maintenance at 5:00 PM. We expect to be back online by 7:00 PM. During this time, the website may not function at full capacity.
Our last trading day before the holidays is 20th December, and we will reopen on 13th January.
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Infinity REF-551A Reference 550W Mono Subwoofer Amplifier
UPC: 050667370916 SKU: REF-551A
SHOWROOM NOW OPEN
Visit us at 3/229 Robinsons Road, Ravenhall, VIC
High-Performance Mono Subwoofer Amplifier
- High & low-level inputs
- Compact footprint
- HALOsonic mixing input
- Variable crossovers & bass boost
- ADAS input with Channel assignment
- Fuse rating 30A x 2
- Class-D amp technology
- Pre-amp and speaker-level inputs
* DISCLAIMER: Design, features and specifications subject to change without notice. Some features in videos on the Internet may not be available on all models, please contact us for the TECHNICAL SPECIFICATIONS for a complete list of features by model. This feature list is for reference only, please contact us to verify features and functionality.
Boom boom boom boom
I like it a lot. Paired it with a down-firing Kicker 12" with passive radiator. Sound is so good. Plenty of bass for me.
Orange Cat Compu, 2020-12-17
on Amazon
Probably the best budget amplifier on the market
Excellent amplifier. This and the JBL club 5501 both use the same Harman kardon amplifier circuitry. I'm sure there's another much higher end model that uses the same circuit board, because both amplifiers have features that are not listed anywhere in their literature and which both JBL and infinity will deny they have. Most notably the reference 551 a and the club 5501 are capable of sensing an audio signal to turn on and off instead of using a dedicated remote line. they are also capable of putting out quite a bit more power than their rated for which is pretty rare. At $140 I don't think you can buy a better amplifier. Certainly not new.
Envy, 2019-05-30
on Amazon
Powerful, compact amplifier
This thing can pump out the juice, that's for sure. Easily powers my 2 12" MTX subwoofers, and for the price you can't really beat this amp.
Tommy G, 2019-05-01
on Amazon
REF0551A
This is a great little amp for installing a single sub. I installed mine in a 2018 Honda accord to help make up for the lack of bass. In addition to this amp I installed a 10" Infinity sub. Together they produce all the bass I was looking for and need in my car. Highly recommended!!
Brucea2, 2019-01-07
on Amazon
Fantastic audio
Amazing Amp. Perfect at what it does.Finally got my Infinity 120.9w Kappa sub hooked up to this. This combo is a beast. Won't win any SPL contests, but you can't beat the sound quality
Justin Peltier, 2017-01-13
on Amazon
Five Stars
Very good product
Amazon Customer, 2016-10-03
on Amazon
Feel the bias
Looks great and works great with 2 10’ punch subs
Jamoose , 2018-01-25
on Amazon
ok amp
nice looking
AudioPhile, 2019-03-20
on Amazon
Short lived performance
Mine only lasted a month...
Thomas, 2019-02-24
on Amazon
