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Best 1-Ohm Stable Amplifiers – Top 6 Rated Picks in 2023

Since the 1970’s people have been turning up the power and volume of their cars with custom sound systems. Getting the right amp was important back then, and in all these decades, this rule, as well as many others, hasn’t changed.

Luckily, the availability and variety of products in the modern age means no car audio enthusiast must go unfulfilled. No matter what your budget, specifications, preferences, or limitations, there’s bound to be an amplifier that will suit you.

If you happen to be looking for a good amplifier that is stable on a 1-ohm load, then I’ve got a great selection to go through, so let’s take a look at the Best 1-ohm Stable Amplifiers currently on the market and find the perfect one for you and your ride, starting with the…

Best 1-Ohm Stable Amplifiers


Top 6 Best 1-Ohm Stable Amplifiers For Your Car 2023

  1. Skar Audio Skv2-1500.1D – Best Competition Grade 1-ohm Stable Amplifier
  2. Kicker-46CXA8001 – Best 9 Volt 1-ohm Stable Amplifier
  3. Audiopipe APCLE – 15001D – Best Value for the Money 1-ohm Stable Amplifier
  4. Planet Audio TR5000 – Most Powerful 1-ohm Stable Amplifier
  5. Hifonics Zeus 1800.1D – Best Budget 1-ohm Stable Amplifier
  6. Rockford Fostgate R2 – 750X1 – Best Premium 1-ohm Stable Amplifier

1 Skar Audio Skv2-1500.1D – Best Competition Grade 1-ohm Stable Amplifier

Skar Audio has a reputation for in-your-face, aggressive amplifiers that deliver great bang for your buck whether you go for a high-end or budget option. The SKV2 – 1500.1D is considered in this selection, but if you’re looking for more power, the entire SKV2 series is excellent.

The 1500.1D comes in at around $280, which is perhaps pricey for so little power. True, there are many more powerful amps available for around the same money, perhaps even less, but as always, it’s how the power is delivered. I can’t think of a better example of this than Skar’s amplifiers.

The manufacturer boasts that the SKV2 series is constructed to competition-grade standards. This means they’re capable of sustaining quality at very high output for extended periods. Meaning it’s one of the best high performance 1-ohm stable amps you can buy.


The 1500.1D will produce an RMS Maximum of 1500Watts on a 1-ohm load. It has a very impressive peak power of 2200 watts on a 1-ohm load. The amplifier’s frequency response is rated 15 to 270kHz.

Design and Build Quality

As expected with Skar Audio, the amplifier has a nice reassuring weight to it. The design is minimalist, even for Skar, who don’t go in for illuminated logos, elaborate paint schemes, etc. The smooth steel frame is of impeccable quality, and the amplifier feels like a brick. Nice and solid.

Controls and Features

The high build quality becomes apparent beneath that shiny frame. The 1500.1D features 4-way protection circuitry for more stability and less noise. Furthermore, the 1/0 gauge input terminals will maximize current flow. The D is Bridge Capable.

The high point of the SKV2 is likely the heavy-duty aluminum heat sink. This goes a long way in maintaining thermal efficiency when in use for long periods. As a result, it’s one of the best heat sink 1-ohm stable amps on the market.

Sound controls come in the form of a Low Pass Filter Control that ranges from 35 to 250Hz and a subsonic filter that runs from 15 to 50Hz. Once your shaping is done, you can bump up that low-end with the bass boost that has a 9dB crossover. Finally, the 1500.1D comes with a remote bass level control.

The sound quality does the Skar name proud…

With plenty of power and punch across the board. The low-end is in your face and well-defined while not overpowering anything else. The mids are still prominent and surprisingly warm sounding. Highs are crisp and clear as well.

Sometimes there’s a bit too much shimmer, but the low pass filter can quickly help with that. Overall it’s one of the best sounding car amplifiers in its class.

Skar Audio Skv2-1500.1D
Our rating:4.6 out of 5 stars (4.6 / 5)


  • Reasonable price.
  • High build quality.
  • Great sound quality.
  • Good sound controls.
  • Remote control.


  • Its weight means you’ll need some help mounting it.

2 Kicker-46CXA8001 – Best 9 Volt 1-ohm Stable Amplifier

Kicker has a reputation for delivering lots of power in small packages. Their amplifiers are some of the most compact and durable out there. At around $225, the 8001 might be considered expensive since the power output isn’t that high. However, when you take into account the build quality and features, the money seems well spent.

Design and Build Quality

The 8001 isn’t the smallest amplifier in its class but is still very compact and sturdy. The materials used are high-end, and the components are well put-together. The amplifier doesn’t seem to rattle or shake at high volume, even after sustained periods. Thanks to the practical design, the 8001 is easy to install into almost any system.


The 8001 will deliver 300 watts RMS at 4-ohms, 600 watts RMS at 2-ohms, and finally 800 watts RMS on a 1-ohm load. The frequency response is somewhat limited, considering the price range at 25 to 200Hz.

Controls and Features

The 8001 has a three-second on/off delay to prevent speaker damage due to “loud starts.” There is power and protect LEDs to help prevent clipping and distortion.

To shape and balance the low-end, the 8001 has a variable low pass filter that runs from 50 to 250Hz at 15dB per octave. To get rid of unnecessary inaudible lows, there is a subsonic filter that runs from 25Hz and below at 24dB per octave.

Finally, there’s Kicker’s KickEQ boost, which will provide up to 6dB at around 40Hz. The 8001 needs only 9 volts to power it; this is very low considering the power it can produce. The 8001 doesn’t require the use of a line-out converter. This is thanks to a special circuit that also serves to remove feedback and reduce noise.

Sound is well defined and full of texture…

The bass has a nice rounded edge which is very pleasant. Mids are pushed just enough so vocals sound warm and natural. Highs do tend to get a bit bright, so be sure to tune the amplifier properly.

The biggest downside is that the 8001 doesn’t dissipate its heat as well as it should. Therefore, it tends to overheat at high output.

Our rating:4.7 out of 5 stars (4.7 / 5)


  • Good build quality.
  • Easy to install.
  • Needs only 9 volts.


  • Tends to overheat despite good build quality.
  • Expensive for a low-power amp that overheats.

3 Audiopipe APCLE – 15001D – Best Value for the Money 1-ohm Stable Amplifier

Audiopipe’s name should be no stranger to anyone who’s got an interest in high-end car audio. They’ve been providing some of the industry’s best hardware for nearly twenty years.

Usually, their impeccable build quality and superb sound come at a higher price. But, the APLCLE is well under the $300 mark; this makes it one of the most affordable 1-ohm stable amps you can buy.

Design and Build

The simplest way of breaking down the build quality of 15001D is to say that it is on par with what is expected of its name. Quality materials, fashioned into good components which are well put together. As always, the distinctive design features the well-known vents, which do serve a practical function, but we’ll get to that in a bit.

The 15001D is equipped with a high-quality aluminum heat-sink to help with temperature regulation. Distinctive vents on the top of the amp help to dissipate the heat away from the transistors. Reducing distortion and improving long-term value.


The 15001D can deliver up to 600 watts RMS at 4-ohms, 950 watts at 2-ohms, and finally 1500 watts RMS on a 1-ohm load. The frequency response is rated 80 to 180kHz. Just make sure you can provide up to 12 volts of power if you plan on going to the limit.

Controls and Features

The 15001D comes with protection and power LEDs. Bridge capability means you can generate double the power, and a quality bridge cable is included. It includes a MOSFET circuit design and power supply, which help to regulate power and ensure safety. The circuits are overload, short-circuit, and low voltage protected.

Sound shaping is done via a Low Pass Filter that runs from 40 to 180Hz, which will keep any unnecessary highs from getting out of control. For the low-end, there is a subsonic filter that goes up to 50Hz, and a 12dB Bass Boost that can be adjusted from 30 to 80Hz.

As far as sound quality goes, the only problem is those highs that tend to get a bit out of control. From there on, the sound is just superb. Beautifully rich and defined bass with plenty of power. Natural and clear mids with crisp highs. Easily one of the best 1-ohm stable amplifiers you will find.

Audiopipe APCLE - 15001D
Our rating:4.5 out of 5 stars (4.5 / 5)


  • Good price.
  • Excellent build quality.
  • Superb sound.


  • It’s quite heavy.
  • No remote control.

4 Planet Audio TR5000 – Most Powerful 1-ohm Stable Amplifier

Planet audio has long been a favorite for users who want maximum power for their money and like a bit of flair. The TR5000 is one of their power amps and yet comes in at under $250, making it one of the loudest 1-ohm stable amps you can buy in this price range.

Design and Build

One major complaint with Planet Audio’s amplifiers has been the build quality. Unfortunately, this is yet again the case with the TR5000. At high volumes, the convex-looking frame tends to develop some rattles, and separation in the sound suffers.

Therefore, if you plan on running an amp at high output capability for long periods, this might not be the one you want.


The TR500 can deliver 2500 watts RMS at 2-ohms or 5000 watts RMS at 1-ohm. It is strapping capable, so output can be doubled with two TR5000s.

Controls and Features

The TR5000 comes with a Subsonic filter that ranges from 15 to 40Hz and an 18dB Bass Boost control for low-frequency shaping. To control the highs, there is a Low Pass Filter that ranges from 50 to 250Hz. The TR5000 also has a lo/hi input sensitivity switch, and dial. A remote bass control knob is included.

While the sound is impressive in its power and presence, the nice-sounding bass frequencies tend to bleed over the mids at high volumes. Highs can seem recessed at times, while at other times, seeming pushed. If kept at moderate volumes, though, it will make any bass-head happy.

Planet Audio TR5000
Our rating:4.3 out of 5 stars (4.3 / 5)


  • Low price for the power.
  • Easy to install.
  • Nice looking illuminated design.


  • Build quality could be better.
  • Sound quality suffers due to poor build quality.

5 Hifonics Zeus 1800.1D – Best Budget 1-ohm Stable Amplifier

Hifonics created the Zeus series to showcase some of the biggest and baddest they’ve got to offer. The 1800.1D may be the one specifically mentioned here, but there are plenty of more powerful options in the Zeus series.

Design and Build

If you like an amplifier that draws some eyes when you open the boot, you’ll likely be attracted to Zeus’s distinctive color scheme and sleek look.

This amplifier is by no means a light one, so keep this in mind when making your consideration. It is also not what you would call compact, but then again, to some people, that might be the point.


For less than $150, the Zeus does deliver quite a lot of bang for your buck. At 4-ohms, you can get 450 watts RMS; at 2-ohms, you’ll be at 900 watts RMS, and finally, on a 1-ohm load, you’ll reach a maximum of 1800 watts RMS.

Controls and Features

The Zeus features a patented low noise preamp circuit to clean up the signal before it gets amplified. The heat-sink is made from top-grade aluminum and helps to keep the temperature down.

The low pass filter reaches from 40 to 300Hz at 12dB per octave. For the low-end, there is a 9dB Bass EQ/Boost, as well as a Subsonic filter that runs from 10 to 40Hz. The Zeus comes with a remote control for bass level.

The bass is very powerful and well-shaped at moderate volumes but does tend to lose some solidity as you increase the volume. The highs are some of the best I’ve heard from any amp, and the mids, while being always prominent, somehow seem like they’re never as powerful as they ought to be.

Hifonics Zeus 1800.1D
Our rating:4.5 out of 5 stars (4.5 / 5)


  • Very affordable.
  • Very stylish.
  • Easy to install.


  • The sound could be better.
  • Build quality is lacking.
  • Large and heavy.

6 Rockford Fostgate R2 – 750X1 – Best Premium 1-ohm Stable Amplifier

The 750X1 is meant to be Rockford Fostgate’s answer to the high-end smaller amplifiers made by their rivals. Their budget amplifiers have been some of the highest-rated in their class on Amazon. Although, at around $350, this small power amp is very expensive for its size.

Design and Build

The design is a familiar one, but then again, if it ain’t broke… The amplifier’s low profile design and compact size, make it easy to fit anywhere in almost any type of car. As a result, it’s one of the most versatile 1-ohm stables amps on the market.

The switch and dials are located on what would normally be considered the top. This makes for easy operation installation. The build quality is top-notch, as expected with Rockford.


Power is where the R2-750X1 will be lacking compared to others in the same price range. On a 4-ohm load, you’ll be getting 250 watts RMS, 500 watts RMS on a 2-ohm load, and finally, the maximum of 750 watts RMS on a 1-ohm load. The 750X1 has a frequency response of 20 to 250kHz.

Controls and Features

The 750X1 has two very unique design features that help it stand out. Firstly, a P.O.W.E.R circuit in the power supply increases power output based on input voltage, which saves power and improves performance.

Secondly, a C.L.E.A.N (Calibrated Level Eliminates Audible Noise) circuit. This patented circuit works to eliminate noise at the input and output stages to minimize distortion.

For sound shaping, the 750X1 comes with Rockford’s PunchEQ control that ranges from 50 to 250Hz. And an Infra Sonic Filter that runs from 15 to 40Hz. A remote Bass Volume Knob is also included. Unfortunately, the 750X1 is not bridgable.

The sound quality overall is fantastic…

With plenty of punch and depth to the bass frequencies. However, mids are perhaps the place where the 7750X1 shines most, with the vocals soaring above the rest of the mix. Highs can seem recessed at times, but this is not often. Overall, one of the best 1-ohm stable amplifiers out there.

Rockford Fostgate R2 - 750X1
Our rating:4.8 out of 5 stars (4.8 / 5)


  • Good build quality.
  • Excellent sound at all volumes.
  • Compact design.


  • Not a lot of power.
  • Expensive.

Need a Better Sound System for Your Ride?

We can help. Check out our in-depth reviews of the Best 3000 Watt Amps, the Best 2000 Watt RMS Amps, the Best Monoblock Car Amplifiers, the Top 10 Best Car Amplifiers, and the Best Car Subwoofers you can buy in 2023.

Also, have a look at our detailed reviews of the Best Under Seat Subwoofers, the Best 12-Inch Subwoofers, the Best 15-inch Subwoofers, the Best Competition Subwoofer, the Best 6.5 Speakers, and the Best Cassette Adapter currently on the market.

What are the Best 1-Ohm Stable Amplifiers?

For its reasonable price, superb quality in both build and sound, as well its brilliant design, the title of best 1-ohm stable amp goes to the…

Audiopipe APCLE – 15001D

Usually, Audiopipe’s merchandise sells at prices that means it doesn’t score high for affordability. The 15001D, however, is priced around the same or cheaper than many of its rivals. The fact that you can get this kind of quality at such a price makes this one a no-brainer.

Until next time, happy listening.

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About Joseph L. Hollen

Joseph is a session musician, writer, and filmmaker from south Florida. He has recorded a number of albums and made numerous short films, as well as contributing music to shorts and commercials. 

He doesn't get as much time to practice and play as he used to, but still manages (just about!) to fulfill all his session requests. According to Joseph, it just gets harder as you get older; you rely on what you learned decades ago and can play without thinking. Thankfully that's what most producers still want from him.

He is a devout gear heat and has been collecting musical instruments all his life. As his wife, Jill, keeps on saying, "You're very good at buying nice instruments, but terrible at selling them!".

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