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- USA
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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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
4.5 ★★★★★
Based on 2361 reviews
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Product Reviews
★★★★★ 3
Not great at cooling
Size: Queen (2 Count), Color: Original White (Cooling)
Each pillow cover has 2 sides, one marked for cooling, and the other a different fabric. The cooling side is about the same effectiveness as having a silk or satin pillow cover. It's only cool when you first touch it. The cooling side doesn't seem to absorb or wick moisture, so if you are sweaty - it keeps the moisture in place. You'll definitely want a regular pillow case over the pillow cover. In fact, if you suffer from night sweats, the non-cooling side is actually more comfortable. The pillow fill is ample, and simple to squish around for more support for your neck, etc. Think bean bag. But it will retain your impression after use. I find I need to do as I did when I had down pillows - give it a few good shakes in the morning when I make the bed to get it evened out for the coming night. In all, it is a well-made and comfortable pillow to sleep on, but it does not excel in cooling.
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Reviewed in the United States on May 29, 2026
★★★★★ 5
excellent pillows i bought two sets!!
Size: Firm Queen (2 Count), Color: Original White (Cooling)
I ordered these for my son who has neck issues and has gone through so many pillows trying to find one that he liked. They’re heavy, so i was worried that they might be “too” heavy to be able to sleep on comfortably, so I ordered a second set, one firmer than the other (just in case) and gave him a set for Xmas and he loved the first set so much without even trying the less firm ones.He also needs the cooling factor and these offered that, too. They are filled with pieces of memory foam (tons of it) and each pillow can be modified by removing some of the foam. The covers are beautiful, high quality fabric with a zipper so ts easy to remove or replace the foam pieces. The size is perfect and they keep their shape. I kept the second set i ordered rather than returning them and i love the pillows. I actually modified two by removing some of the foam pieces. I kept the foam pieces in a zippered pillow protector and i can always adjust mine when or if i need to.
1000% love these.
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Reviewed in the United States on March 22, 2026
★★★★★ 5
The Perfect Firm Pillow l
Size: Queen (1 Count), Color: Original White (Cooling)
It is everything it claims to be, cool, comfortable and strong. I got this for my husband first, he loves it and then got one for my son, he uses it to support his knees and has been sleeping much better since then.
They both needed a firm pillow that is not super soft, firm but not achy.
Finally found the perfect one.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Super comfortable!!!!
Size: Queen - Pack of 2, Style: Medium, Configuration: Pillow
They are super soft and large; they come vacuum-sealed and expand very quickly. They aren't heavy, and they are incredible for sleeping and watching TV in bed.
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Reviewed in the United States on June 4, 2026
★★★★★ 5
Comfort and Quality
Size: Queen - Pack of 2, Style: Medium, Configuration: Pillow
These pillows are very comfortable. They hold their shape well throughout the night and have greatly improved my sleep. Plus, the quality of the materials is excellent. Highly recommended!
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Reviewed in the United States on June 2, 2026