Your boat is a home away from home — and it should be able to play audio like home, too. Infinity marine amplifiers have the power for high-performance sound in a case that fits the small confines of most watercraft. This 5-channel Class D amplifier can boost the fronts, rears and subwoofer of a 4.1 speaker system. The 2-ohm front/back channel produces 65 watts of regular RMS power with an additional 500 watts through the subwoofer channel. Surge capabilities have you covered for up to 1,800 total watts. If you only have front speakers, bridge the main outputs for a 3-channel setup.
Craft the ideal marine audio system with the heavy-duty construction and flexible options of an Infinity M4555A boat amplifier. It has a high-level input adapter, bass boost and variable adjustment crossovers to squeeze out every decibel of clean sound. Three 30A ATO fuses are included along with speaker-to-RCA adapters and other installation accessories. These marine amplifiers are also well-suited for off-roading and areas with frequent harsh weather. We are an authorized Infinity dealer with free shipping and lifetime tech support on all purchases.
Infinity Marine amplifiers feature a slim chassis and a small footprint to allow for installation in tight spaces.
High- and low-level inputs
Speaker-level and low-level inputs let Infinity Marine amps integrate with just about any audio input.
Selectable Output and Variable Adjustment Crossovers
Infinity Marine amps feature selectable all-, high-, or low-pass crossovers with variable electronic frequency adjustment to allow for fine-tuning multiple system configurations.
Infinity power and performance at an affordable price point
Product family look and feel to meet the needs of our Infinity customers
Infinity Marine amplifiers are engineered to withstand harsh marine conditions, with fully “marinized” circuit boards to ensure flawless power delivery, year after year
Onboard 12dB electronic crossovers, with selectable full-range, high-pass & low-pass switching, provide tuning options for systems of any size
Big Dynamic Power
Output power is perfectly matched to meet the needs for your Infinity marine products
Maximum Power : 1800 Watts
Number of Channels : 5
Built In Crossovers : Yes
RMS Power Output : 500 Watts
Amplifier Class : D
New weather-resistant & high-performance Infinity Marine amplifiers deliver impressive power from a compact chassis designed to withstand outdoor environments. Available with 4-channel and 5-channel outputs. Infinity Marine amplifiers incorporate our latest amplifier topology that includes selectable all-, high-, or low-pass crossovers with variable electronic frequency adjustment for precision system tuning. Engineered for harsh marine conditions, with power and performance to meet the needs of any outdoor audio system, Infinity Marine amplifiers are the perfect match for all of your Infinity marine products.
Max Power: 1800W Peak
RMS Power Output @ 2Ω (subwoofer): 500W x 1, <1% THD+N
RMS Power Output @ 4Ω (subwoofer): 320W x 1, <1% THD+N
RMS Power Output @ 2Ω (full-range): 65W x 4, <1% THD+N
RMS Power Output @ 4Ω (full-range): 45W x 4, <1% THD+N
RMS Power Output @ 4Ω Bridged (full-range): 130W x 2, <1% THD+N
Signal-to-Noise Ratio (sub): >80dB (ref 1W output @ 4Ω)
Signal-to-Noise Ratio (full-range): >80dB (ref 1W output @ 4Ω)
Stainless steel mounting hardware
4 High-level input adapters
3 spare fuses
2 2-color brand stickers
Quick start guide
Authorized Internet Dealer
Warranty: 1 Year Onlinecarstereo.com warranty.
1 Year warranty from Onlinecarstereo.com implies that repairs must be returned to Onlinecarstereo.com, not the manufacturer. More information can be found in our help section under returns & warranties. What's not covered : Misuse, abuse, defacement, physical damage of any kind, and improper installation / operation. Video and multimedia equipment with damaged or cracked screens.Subwoofers and speakers are not warranted against being blown, burned or abused.
Estimated Shipping Time for Special Order items is 1-3 weeks.
You may call our Customer Service Department at 310-526-8635 for a more accurate shipping estimate.
Special Order Product
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Free Lifetime Tech Support
All your purchase from our store comes with Free Lifetime Technical Support. Please call our certified technicians at 310-874-3313 for any questions about your product.
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Consumer Priority Service was founded on the belief that consumers deserve
better service. Putting the satisfaction of the consumer at the forefront of our
corporate policy has driven our company to be among the very best at post sale service
both on and offline. Our lineup of consumer protection products can be found at
America’s largest retailers as well as America’s best boutique shops. Although some
of our Authorized Dealers compete with each other they all share one common belief
– Consumers Deserve A Better Service Provider. That is why your retailer has selected
Consumer Priority service, a place where you, our mutual customer, is Always Our
Why Do I need This?
Consumer Priority Service Extended Protection plans provides you with easy protection
from potentially high future repair costs. Planning ahead and taking action now
can save you the stress of dealing with unqualified servicers should your product
become defective. Saving time and money is in everybody’s best interests. We are
here for you.
What is Covered?
CPS Protection Plans are extensions of your manufacturers’ written warranty a few
added bonus features. Any malfunctions that would normally be covered within the
terms and conditions of the original written warranty would be covered through the
life of the Consumer Priority Service Extension. "Our Shield Means You're Protected."
Benefits of owning a Consumer Priority Service Plan
Zero Deductible All CPS plans are zero deductible. This means that ALLcosts
associated with Parts and Labor to repair your defective product are covered. Owning
a CPS service plan means you’re FULLY COVERED.
With CPS you can file a claim for repair or replacement 24 hours a day 7 days a
week through our consumer network at www.cpscentral.com
In-Home parts and labor protection plans provide service for your products at your
home or your workplace. Contact us Toll Free at 1-800-905-0443 so that we may arrange
for a convenient service time for you.
Express On-Site Upgrade
With our Express On-Site Upgrade plan you can now upgrade any of our service
plans to include door-to-door service. We'll pickup your defective product from
your home or workplace, repair or replace it, and return it to you.
Product Replacement Plan
Any product that plugs in or takes a battery qualifies for this program. If your
product fails to operate properly under the terms of its written warranty, we will
replace it, No Questions Asked!
Consumer Priority Service provides complete coverage across all 48 contiguous states.
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If our authorized service center determines your product to be beyond economical
repair or they have unsuccessfully attempted to repair your product three times,
we will replace your product.
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Owning a CPS service plan virtually guarantees that you will get years of use from
your product through the duration of the plan.