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Description
Rockford Fosgate PM400X4 Punch Series 400 Watt 4 Channel Marine AmplifierThe PM400X4 is a 400 Watt 4 channel amplifier with high dynamic power using Class A B technology and a conformal coated pc board designed for motorsport and marine applications. The PM400X4 is perfect for 4 way front stage rear fill or 3 way front stage subwoofer systems. Simply drop a pair of component speakers on the front channels and subs on the rear and BOOM you got "The PUNCH." With its flexible design, the PM400X4 is an excellent amplifier
The PM400X4 is a 400 Watt 4-channel amplifier with high dynamic power using Class-A/B technology and a conformal coated pc board designed for motorsport and marine applications.
The PM400X4 is perfect for 4-way front-stage/rear-fill or 3-way front-stage/subwoofer systems. Simply drop a pair of component speakers on the front channels and subs on the rear and BOOM - you got "The PUNCH." With its flexible design, the PM400X4 is an excellent amplifier choice for virtually any vehicle.
Key Points
- 4-channel marine amplifier
- 50 watts RMS x 4 at 4 ohms (400 watts peak)
- 100 watts RMS x 4 at 2 ohms
- 200 watts RMS x 2 at 4 ohms (bridged)
- CEA-2006 compliant
- Class AB amp technology
- Conformal-coated circuit board — suitable for powersports and
- Marine applications
- Marine-grade stainless steel hardware
- Hidden top-mount control panel
- Clean set-up technology with LED input/output indicators
- Speaker-level inputs (speaker wire to RCA adapter required)
- Variable low-pass and high-pass filters
- Frequency response: 20-20,000 Hz
- Built-in Punch EQ with +18dB boost @ 45Hz
- Fuse rating: 60A x 1 (fuse not included)
- Dimensions: 11-1/16"W x 2-7/16"H x 8-13/16"D
- Warranty: 1 year
- Our 60-day money-back guarantee
- MFR # PM400X4
Features
- High level input capable with Auto Turn-On circuit
- Features C.L.E.A.N. Set-up
- 12dB/octave Butterworth crossover
- On-board Punch EQ with +18dB boost @ 45Hz
- Muted turn on
- Cast aluminum heatsink
- Stealth top mounted control panel
- Short circuit protection
- Over current protection
- Marine grade stainless steel hardware
- Marine grade two part epoxy coating on circuit boards
- 2-Year Warranty
Specifications
Performance
| RMS Power Output (Watts x Channels) | 50 x 4 |
| Frequency Response at Rated RMS Power | 20-20k Hz |
| THD at Rated RMS Power | 1% |
| Signal to Noise Ratio | N/A |
| Input Voltage | 14.4v |
| Peak Power Output (Watts x Channels) | N/A |
| Power at 2 Ohms (Watts x Channels) | 100 x 4 |
| Bridged Power (Watts x Channels) | 200 x 2 |
| Minimum Impedance Bridged | 4 |
| Minimum Impedance Unbridged | 2 |
Features
| Amplifier Class | AB |
| Low-Pass Crossover Frequency | 50-250 Hz |
| Low-Pass Slope (dB/octave) | 12 dB/octave |
| High-Pass Crossover Frequency | 50-250 Hz |
| High-Pass Slope (dB/octave) | 12 dB/octave |
| Bass Boost | 0-18 dB |
| Bass Boost Frequency | 45 Hz |
| Fan Cooled | No |
| Fuse Rating | 60 |
| Speaker Level Inputs | Yes |
| Preamp Outputs | No |
| Height (inches) | 2/7/2016 |
| Width (inches) | 11/1/2016 |
| Depth (inches) | 8/13/2016 |
| Parts Warranty | 1 Year |
| Labor Warranty | 1 Year |
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 13 reviews
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Product Reviews
★★★★★ 5
Look no further than! Buy these 💯
Color: 01 - Dark Grey, Size: Queen
Queen. Grey.
Beautiful. Nice snug fit. Feels like silk. Super comfortable, soft, almost buttery. And truly cooling fabric. The price point is a steal. I will be ordering these sheets in all the colors.
P.S. these sheets also laundered beautifully.
I’m very very pleased with this purchase.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Sheets
Color: 05 - Dusty Blue, Size: Full
Have been the best sheets I've bought, would totally spend the money again. They feel soft against your skin yet keep you cool and comfortable. Easily fits my extra thick mattress, only a little wrinkles during use. They offer some wonderful colors, went with a dusty blue and am completely satisfied with richness of color.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Exceptional quality and feel
Color: 12 - Light Beige, Size: Queen
I will be purchasing again from Bedsure. I purchased the light beige which is exactly what the color was, like a gentle note of almond to it. Perfect for my bedroom as my master bath has light beige full shower, toilet and sink. I washed them and dressed the bed. The sizing was spot on. My mattress does has a 3" Mike Lindell topper. I would suggest making sure you follow their sizing which I did not do mine just happened to fit and didn't have much to spare either because of the topper.
The sheets feel wonderful to sleep on. They do feel cool on my skin and felt cool out of the package also. I do not believe you would be disappointed unless you just absolutely were in love with the sheets you are on. This set works beautifully for me and my skin loves the smooth texture of the material. I'll be a repeat buyer.
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Reviewed in the United States on April 19, 2026
★★★★★ 3
Love BUT they STINK!!
Color: 26 - Forest Green, Size: King
I have the dark green sheets and would give them 5 stars if it weren’t for the fact that they smell absolutely horrible. I am so surprised after reading reviews that more people don’t mention it?! Maybe it’s more prominent in darker colors but I have washed these now 3 different times even with scent beads and still hate the smell. I wish I could accurately describe what it smells like— it’s just not good and for some reason, body heat only exacerbates it and makes the smell even worse and I wake up feeling like a smell like the sheets… which isn’t a good thing.
Besides that, I do really enjoy them. They feel great on your skin, haven’t been pilling near the foot area (which is what makes us go through so many sheets) and I love the color. I wish the smell didn’t kill them so badly for me ☹️
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Reviewed in the United States on June 9, 2026
★★★★★ 5
Great pillows
Model: Soft-2PK, Size: Queen
Very soft, very comfortable & supportive. Love these pillows!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
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