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PLINIUS

Amplifier car Audio Monoblock Class D Compact Subwoofer Amplifier, 2/4 Ohm Stable, Low/High Level Inputs, Low Pass Crossover, Mosfet Power Supply

    • Based on 97 reviews
Condition: New
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$46.00 Why this price?
Save $33.98 was $79.98

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Features

  • Car audio amplifier 450 watts RMS at 2-ohm load (14.4v); 300 watts RMS at 4-ohm load (14.4v);
  • Class D - Power loss is significantly reduced making the amplifier highly efficient. Excess energy is stored until its needed instead of being converted into heat. Reduction in size/weight, reduced power waste, smaller heat sink, compact circuitry
  • 2-4 Ohm Stable - Able to continuously power loads of 2-4 Ohm without encountering difficulties such as overheating. Typically made to power up subwoofers that demand the heavier power load requirements to be able to perform the way they were made to
  • Engineered to be the most efficient car monoblock amplifier in its class so that you can get the most out of your vehicles electrical system
  • MOSFET pulse width modulated power supply and proprietary heat dissipation design will ensure the amplifier for car subwoofers runs cool for even the most demanding playlists

Item dimensions L x W x H: 6.3 x 3.3 x 1.42 inches


Voltage: 14.4 Volts


Manufacturer: LKC


Maximum Supply Voltage: 14.4 Volts (DC)


Mounting Type: Surface Mount


Product Dimensions ‏ : ‎ 6.3 x 3.3 x 1.42 inches; 1.81 Pounds


Item model number ‏ : ‎ PHF450D


Date First Available ‏ : ‎ July 6, 2023


Manufacturer ‏ : ‎ LKC


Country of Origin ‏ : ‎ China


Best Sellers Rank: #179,242 in Electronics (See Top 100 in Electronics) #394 in Car Mono Amplifiers


#394 in Car Mono Amplifiers:


Customer Reviews: 3.9 3.9 out of 5 stars 97 ratings


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Top Amazon Reviews

    • Budget No Brainer
will fit almost anywhere. good build quality. even though it doesn't meet it's power ratings still provides a good amount of power in a very small package at the price of $46. included remote level control is nice. UPDATE: reconfigured the single 10" 2 ohm DVC subwoofer this amp pushes from a series 4 ohm load to a 1 ohm parallel load, and this little budget gem really shines. no shutdowns and only mildly warm to the touch. if you want to take a chance and see what $46 can do go ahead and give it a try......at your own risk of course. but in this case it's delivering around 500 good sounding watts into a single 10" load at 1 ohm. will do a future update if anything change It truly will run 1 ohm just fine with no issues for me at all, and make plenty of clean power doing it for it's size. they must rate it to only 2 ohms so as not to step on the toes of other brands who have them build virtually the same amp selling for higher cost. you can pretty much take it's power ratings and shift them from 4 and 2 ohms, to 2 and 1 ohms and that is the real power you will be getting at 2 and 1 ohm loads. ... show more
Reviewed in the United States on November 8, 2023 by RJETHVA
    • Incredible for the money
I have a mid-size crossover currently, had no sub from the factory. I'm a high end snob, I'm very much so into the clarity and accuracy of audio reproduction in the car-audio segment of things. I built a 1 1/4 cuft. box, slapped a nice woofer I had laying around into it, I set the gain and crossover with my D'Amore Engineering DD-1 and CC-1. I'm pushing this thing into a 2 ohm load, and let me tell you. With a good box, good woofer, good settings, and a good power supply, this thing absolutely slams. For reference, I had a similar setup with a Rockford Fosgate P300X1, which on a dyno makes around 300W burst into 2 ohms, this does the same for... a sixth the price? Now, that's all fine and dandy, but how's the audio quality? It's great, it's really great. I can't believe how clean the output is for how cheap this thing is. There's super low noise floor (noise that escapes the class D filtering and makes it to the output). It's absolutely shocking for the price, I really can't describe it any other way. I would appreciate the company producing this product, if they'd take this feedback, as these simple things would make this amplifier significantly better. 1. Power inputs should be larger, 8 AWG. 10AWG basically doesn't exist... 2. Remove the high pass crossover, make it only have a low pass. 3. Increase the jack size of the bass knob. The jack on the amplifier is smaller than on the bass knob. 4. Increase internal fuse size, and change ratings to include 1 ohm testing. This amplifier works fine at 1 ohm, gives me and others no problems at 1 ohm, even with 35A fuse. It would be nice if it was equipped for it from the factory, and it meets its rated power at 1 ohm! Extra details too; The company that makes this amp, ALSO makes "AUDIOZERONE" and they have the "PLINIUS" brand trademarked as well as the other, in the US. So these will likely be their brands going forward. They are a China based company, which in this case is a good thing, as they are a manufacturing company selling directly to the consumer, this means that they are able to sell at a significantly lower price than everyone else. From an engineering perspective; Overall looks good. There are a plethora of low-ESR capacitors inside the amplifier. They're of a cheaper brand, but this is alright in this case as it looks like for reliability purposes, they put way, way more than necessary. These also help reduce input and output noise. Notably though, the caps are rated to 50V, which means the power rail is likely running around 35-45V, which is very, very nice for an amp this small, as it helps it make a lot more power in a compact size. The power components are made by TSD semiconductor, a Beijing based company, very reputable for their quality too, which is a good indicator components were picked with the best ones where they matter. The output frequency filter is also of high quality, made by CODACA, it is a CPCF2919 model, high current type. Very, very good quality for the price, CODACA components are very good, usually not a known name due to them mostly being used for OEM applications. Thermals; Semiconductors are mounted to a common rail with thermal paste, this rail is then mounted to the case, lots of metal between the semiconductors and the atmosphere allows for more heat to be transferred directly into solid metal, this works well for high power applications. This is a low power, high efficiency application, the amplifier will literally never overheat unless you seal it in a thermally isolated box or an oven, or whatever equivalent you find out how to do in a car. What I'm trying to say is; you're going to have to really mess up or try to overheat this thing, very thermally efficient. This also bodes well for longevity, as it means all components will run cooler, and electrolytic capacitors love running cooler. Overall, very well built, very good sound quality, shocking price. I hope to see more from this company at this price point, as it will severely disrupt the market and make every manufacturer become more competitive. ... show more
Reviewed in the United States on November 28, 2023 by a-username
    • Tiny!!! powerful little amp
Great size for power. for $50 and can d0 300wats @2 ohms not bad. Saw a You Tuber (Wilson Audio Labs) test it at 1 ohm and it hit its 500w and didn't over heat. They said it may be mislabeled for the ohm load.
Reviewed in the United States on May 21, 2024 by Chris
    • Noise Fm radio
Noise when bass hits only using Fm radio works awesome using USB or Bluetooth
Reviewed in the United States on May 8, 2024 by E.Rodriguez
    • Not ready for the big leagues
Pros: Size and power efficiency by far are the best things about the amp. I didn’t have a lot of install room so I was hoping this would work well. Cons: Terrible Class-D EMI interference with my radio tuner (FM reception would drop every time the beat of the music would hit / Bluetooth was fine but some people do still use their radio tuners these days…Low and High Level inputs need way more gain…Auto Sensing of High Level Inputs was useless as they just powered the amp non-stop which would have killed the vehicle battery…The remote bass knob’s female input jack was intermittent / wiggle the back of the cord lightly and it would work for a moment. Huge waste of time. ... show more
Reviewed in the United States on April 2, 2024 by Nicholas
    • Great small amp
AWESOME budget amp, not super powerful but at max settings it certainly does the job, especially for the size form and cost. Perfect for my application.
Reviewed in the United States on January 31, 2025 by Ethan Camp
    • Small, powerfull, accurate, good VFM. (Pay attention buyers who claim it bearly moves the subwoofer)
At the begining i noticed its not powerfull and bearly moves the subwoofer. gain and volume are at maximum. tried High-level input and RCA inputs, both without any change. I even checked the output voltage of the Head-Unit with 40Hz track and 1KHZ track, output voltage was good. I contacted amazon CSC and the seller, and we agreed on returning the item. And then... To make along story short: Buyers who claim that its not powerfull and using the high level inputs or RCA inputs, do this: Use Pre-Amp line-driver OR active crossover OR Dsp. your Head-Unit output is weak (it can happend with the Stock head-unit of the car, and also with After-Market Headunits (Its rare, but can happen). ... show more
Reviewed in the United States on January 25, 2024 by Itzik N.
    • Amazing
I kinda want to give it a bad review so others won’t buy it. I’ve purchased 5 to use in extreme portable Bluetooth speakers. I literally can’t say enough good things about it. Run 4, 4 ohm speaker on it and you won’t be disappointed. I ran 2 Skar midrange 4 ohm 8” and 2 Skar super tweeters also both 4 ohm for a total of 1 ohm load. AMAZING! Oh yeah and I ran it that way for about 45 minutes till my ears couldn’t handle it anymore. No overheating or turning off. ... show more
Reviewed in the United States on March 11, 2025 by Chris and Debbie

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