Shipping Estimate
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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
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Description
Infinity Ma4555a 5 Channel Amp 4x100w @ 4 Ohms 1x500wInfinity M4555A Multi element High performance, 5 channel Amplifier Model: MA4555A Compact size 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
Infinity M4555A Multi-element High-performance, 5-channel Amplifier
Model: MA4555A- Compact size - 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.
- Product Value - Infinity power and performance at an affordable price point
- Cosmetic Appeal - Product family look and feel to meet the needs of our Infinity customers
- Conformal-Coated PCB - Infinity Marine amplifiers are engineered to withstand harsh marine conditions, with fully "marinized" circuit boards to ensure flawless power delivery, year after year
- Variable Crossovers - 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
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.
Specifications| Max Power | 1800W Peak |
| RMS Power Output @ 2? (subwoofer) | 500W x 1, <1% THD+N |
| RMS Power Output @ 4 Ohms (subwoofer) | 320W x 1, <1% THD+N |
| RMS Power Output @ 2 Ohms (full-range) | 65W x 4, <1% THD+N |
| RMS Power Output @ 4 Ohms (full-range) | 45W x 4, <1% THD+N |
| RMS Power Output @ 4 Ohms Bridged (full-range) | 130W x 2, <1% THD+N |
| Signal-to-Noise Ratio (sub) | >80dB (ref 1W output @ 4 Ohms) |
| Signal-to-Noise Ratio (full-range) | >80dB (ref 1W output @ 4 Ohms) |
What's in the Box:
- 1 amplifier
- Stainless steel mounting hardware
- Rubber inserts
- 4 High-level input adapters
- 3 spare fuses
- 2 2-color brand stickers
- Quick start guide
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 1927 reviews
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Product Reviews
★★★★★ 5
Well worth the money!
Easy install, warm and has 3 settings. These are great as I can choose which grips I want yet always have access to warm hands in inclimate weather. I can disconnect and keep them in my dry packs. Easy pray and well worth the money.
My grips are 4.125” or just over 10cm and fit perfectly.
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Reviewed in the United States on December 28, 2025
★★★★★ 5
So far they're great!
Just installed but so far so good. The installation was simple but time consuming for me as I had to remove a lot of body panels. They don't seem to have any effect on my grip or when I use the throttle. So far, the lowest setting is more than enough. I use these in conjunction with motorcycle muffs and honestly so far I think it's the perfect combination. My hands are warm and I don't have any added bulk to them. Will update if anything goes wrong or stands out with more use but for now I'd say they're completely worth the money if you're regularly riding in the cold.
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Reviewed in the United States on November 18, 2025
★★★★★ 4
Awesome! Game changer if u ride in cold weather
These are amazing! I’m not real big on leaving reviews. Takes something either really good or really bad. Well these heated grips are on the really good side. They’re a game changer. I’ve been using them for about a month now here in Buffalo, where it’s been prettttty cold. I can ride in temps lower than I’ve ever ridden in before, without wearing thick bulky gloves. The first couple settings actually get too hot sometimes. I was super skeptical about these because I’ve bought similar heated pads before, that hardly even heated up and died after like 5 minutes. But these things get piping hot and stay there. I don’t give anything 5 stars, cuz there’s always room for improvement, but if I could give these 4.9 out of 5, I would. If I had to say something negative about these, it would be that they’re thick on top of my current grips, but that’s the nature of the beast with this type of product, and I have smaller hands. If you’ve been scrolling through different versions of this type of product, just buy these and u will be more than happy.
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Reviewed in the United States on May 7, 2025
★★★★★ 5
Used for skid steer. Adjusting heat is perfect.
Perfect for my open cab skid steer. Only downside is the button sticky pad is poor quality but easy fix pick what glue you want and stays in place.
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Reviewed in the United States on January 18, 2026
★★★★★ 3
Great to have on a cheap bike!
The right grip provides ample heat, but the left grip is lacking for certain. The left provides what feel like half the heat output. The right gets hot enough to make lift my hand to let it cool, so that's good. Its cheap, you get bunk ones occasionally.
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Reviewed in the United States on March 30, 2024