A 4-channel car amplifier is a potent solution to transform your in-car audio (for either a new sound system or upgrading the factory setup). These amplifiers unlock the full potential of your vehicle’s sound system by facilitating seamless connectivity for all car speakers, without the need for costly speaker upgrades.
Key Factors to Consider:
- Max Power Output: Amplifiers amplify audio signals, boosting volume and clarity. Choose an amplifier with a robust power output of at least 200W for significant sound quality improvement.
- Impedance: Ensure compatibility with your car’s speakers by considering impedance. Most car speakers operate at 4 Ohms, but if adding a subwoofer, check compatibility to avoid issues.
- Frequency Response: A broader frequency response range (20 Hz to 20 kHz) delivers richer, detailed audio. Look for amplifiers with wide frequency response for an immersive listening experience.
Whether an audio enthusiast or a novice, our “Buying Guide” offers insights into these key factors, empowering you to make informed decisions about selecting a 4-channel amplifier for your needs.
Best 4 Channel Amp List
| Best 4 Channel Amp | Max Power Output | Impedance | Warranty | Buy Now |
|---|---|---|---|---|
| Pyle Hydra Marine Amplifier | 400 Watts | 4 - 8 Ohm | 1 year long | Check On Amazon |
| Pyle PTA44BT Bluetooth Amplifier | 500 Watts | 4 - 8 Ohm | 1 year long | Check On Amazon |
| Planet Car Amplifier | 2400 Watts | 2 - 8 Ohm | 1 year long | Check On Amazon |
| JBL Amplifier | 435 Watts | 2 - 4 Ohm | 1 year long | Check On Amazon |
| Rockville Amplifier | 1200 Watts | 4 Ohm | 1 year long | Check On Amazon |
| Blaupunkt Amplifier | 1600 Watts | 2 - 4 Ohm | 1 year long | Check On Amazon |
| Rockford Amplifier | 2000 Watts | 2 - 4 Ohm | 1 year long | Check On Amazon |
| Pioneer Amplifier | 1000 Watts | 4 Ohm | 1 year long | Check On Amazon |
| Alpine Amplifier | 240 Watts | 2 Ohm | 1 year long | Check On Amazon |
| Doulk Amplifier | 200 Watts | 4 - 8 Ohm | 1 year long | Check On Amazon |
Best 4 Channel Amp Reviews
1. Pyle Hydra Marine Amplifier
Starting with the first 4 channel amp on this list, you must consider checking out the Pyle Hydra Marine Amplifier if you are essentially looking for it to install on a boat or yacht.
The amp is not at all expensive and comes built with all high-grade materials, so there are no complaints regarding the build quality. To help out the users install it easily with their speaker setups, it comes with easy-to-use RCA stereo connectors at the back as well. If your receiver doesn’t allow for RCA connections, you can connect them using the high-level terminal units as well.
Speaking of its performance, this 4 channel amp is quite powerful and delivers around 100 Watts of power per channel, hence, the max power output touches 400 Watts. Moreover, with the help of dual-adjustable input gain levels, you can easily use 4 ohm and 8-ohm speakers with this amp. Apart from that, this amp is surely built for boats as it comes with an IP01 waterproof rating as well. If you are concerned about the warranty, Pyle Hydra is quite a reputed brand and offers a 1-year warranty for this 4 channel amp.
Best Features:
- Max Power output is 400 Watts
- Delivers 100 Watts of power per channel at 4 ohm
- Has IP01 Waterproof rating
- Comes with a 1-year warranty
Pros:
- Superb build quality
- Compact size
- Brilliant sound quality
Cons:
- Does not support 2-ohm speakers
2. Pyle PTA44BT Bluetooth Amplifier
Here’s another amplifier from the PYLE lineup that promises to elevate your audio experience. The PYLE 500W Karaoke Bluetooth Amplifier is a reliable 4-channel system for both PA and home theater entertainment, delivering exceptional sound quality across all frequencies.
It is used for multi speakers with 4 – 8 ohms impedance, letting you enjoy high-quality audio. With Bluetooth connectivity, seamless wireless music streaming is at your fingertips, ensuring effortless pairing with your devices. Boasting a multitude of 7 inputs, including iPod, MP3, USB, Micro SD, and AUX playback, built-in FM radio with digital LCD, and subwoofer output RCA connectors, this amplifier offers unparalleled versatility.
Equipped with 2X ¼” microphone inputs featuring echo and a mic talk-over function, it’s tailor-made for karaoke nights and public announcements. Intuitive EQ controls and a remote provide convenient adjustments from any corner of the room. Whether you’re hosting a lively gathering or enjoying a cozy movie night, the PYLE Amplifier guarantees an immersive sound experience that redefines audio excellence, thanks to its powerful performance, versatile features, and robust build quality.
Best Features:
- 500 Watts peak power for robust audio performance.
- Bluetooth connectivity for wireless streaming convenience.
- Built-in FM radio tuner with digital display allows easily tune your favorite radio stations.
- Compact and portable design for versatile placement options.
- Its 4 channels ensure balanced and immersive audio playback.
- Versatile connectivity options including USB, SD card, and AUX playback.
- Two microphone inputs with an echo for karaoke or public speaking events.
Pros:
- Crisp and loud sound output enhances listening enjoyment.
- Bluetooth compatibility eliminates cable clutter.
- A sturdy build ensures long-lasting reliability.
- Easy setup and intuitive controls.
- Excellent value for the features offered.
- Sleek design complements any audio setup.
Cons:
- Limited compatibility with certain speaker configurations.
- Basic EQ controls may not satisfy advanced users due to their limitations in customization options.
3. Planet Car Amplifier
Speaking of amplifiers, one should not miss out to check out the Planet Audio PL2400.4 4 Channel Car Amplifier as it’s one of the most premium and powerful options available on this list.
The brand is absolutely one of the best, so is this 4 channel amp. You will be amazed to know that this 4 channel amp can draw up to 2400 Watts max power output which can let you experience a very crisp and large soundstage, right from your car’s speakers. When you invest in such a powerful amplifier, you should already plan to buy a new pair of speakers for your car as the factory ones are not going to do pure justice to this amplifier’s performance.
With a 2 ohm setup, it draws about 600W max power per channel, while the max power output at 4 ohm touches about 300W for each channel which is quite good. Apart from that, you get plenty of useful adjustment features like Low and High-Level Inputs, Variable Filter, Variable Bass Boost, etc. Since Planet Audio is one of the best brands out there, it offers an amazing 6-year warranty for this 4 channel amp.
Best Features:
- Max Power output is 2400 Watts
- Delivers 600 Watts of power per channel at 2 ohm
- Delivers 300 Watts of power per channel at 4 ohm
- Comes with a 6-year warranty
Pros:
- Brilliant power output
- Amazing performance
- Comes with plenty of useful adjustment features
Cons:
- A little costly
4. JBL Amplifier
Well, if you are an audiophile, you must have heard about JBL which gets all of its high-grade products manufactured from Harman Kardon.
Speaking of this 4 channel amp from JBL, it’s a little bit on the expensive side as compared to the other options, but the quality of product you get makes it truly worth it. The design and the construction of the amp are truly solid. In fact, the size is pretty compact as well.
If we talk about its performance, this 4 channel amp works for both 4 ohm as well as 2 ohm speakers setups. Since the max power output of this amp is 435 Watts, it offers 60W RMS X 4 at 4-Ohm impedance and 85W RMS X 4 at 2-Ohm impedance. Apart from that, it’s designed very well and comes with a dedicated cast-aluminum heatsink to keep it cool while your speakers use their full potential. Coming from JBL, you can definitely expect it to have a 1-year warranty.
Best Features:
- Max Power output is 435 Watts
- Delivers 85 Watts RMS power per channel at 2 ohm
- Delivers 60 Watts RMS power per channel at 4 ohm
- Comes with a 1-year warranty
Pros:
- High build quality
- Small size
- Easy to use and install
Cons:
- Power output could be better
5. Rockville Amplifier
Rockville is yet another good brand choice to pick if you are essentially looking out for a premium 4 channel amp for your car as it’s one of the most trusted and customer-friendly brands out there.
If we speak about this Rockville RVF-2 4 channel amp, the peak power offered by this amplifier is about 1200 Watts, which is quite impressive and justifies the pricing as well. That being said, this amp can provide up to 75W RMS output at 2 ohms per channel, and up to 55W per channel at 4 ohms. On 4 ohm bridged connections, you can receive up to 150W on both channels, at 4 ohms.
Thus, the performance of the amp is absolutely top-notch and it’s well capable to deliver a fantastic sound quality. On top of that, it also features a fully adjustable 12dB bass equalizer, low pass filter, and high pass filter as well. In addition, it also comes with a 1-year warranty as well.
Best Features:
- Max Power output is 1200 Watts
- Delivers 75 Watts RMS power per channel at 2 ohm
- Delivers 55 Watts RMS power per channel at 4 ohm
- Comes with a 1-year warranty
Pros:
- Offers crisp and loud sound output
- Comes with a 12 dB bass equalizer
- Good build quality
Cons:
- Does not support 8 ohm speakers
6. Blaupunkt Amplifier
Coming up next, if you are looking out for a powerful 4 channel amp for your car, Blaupunkt has one of the best options that you can check out.
The reason why it’s one of the best options to consider is because of its compact size. Due to that, the installation process of this 4 channel becomes quite easy as it does not require much space in your car. If we talk about its performance, there are a max of 4 channels on this amp and it can deliver a max power output of 1600 Watts distributed over 4 channels.
Since it supports both 4 ohm and 2 ohm speakers, the RMS power output at 4 ohm is 55W, and 79W at 2 ohm impedance, per channel. Yet another good feature of this 4 channel amp is that it offers a wide frequency response of 10Hz – 30kHz which highly improves the sound quality of your car’s factory speakers. Along with the amplifier, you will also receive a warranty card stating its 1-year warranty.
Best Features:
- Max Power output is 1600 Watts
- Delivers 79 Watts RMS power per channel at 2 ohm
- Delivers 55 Watts RMS power per channel at 4 ohm
- Comes with a 1-year warranty
Pros:
- Compact size
- Easy to install
- Frequency response is fantastic
Cons:
- Average build quality
7. Rockford Amplifier
For those of you who are really dedicated to improving the sound system in your car and want to install a premium and powerful amplifier along with a new pair of speakers, Rockford is the best brand to pick an amp for your car in this case.
We personally like this Rockford Fosgate R2-500X4 amplifier as it’s one of the most powerful amplifiers on this list. As its name suggests, the max power output of this amplifier is about 2000 Watts which clearly outshines most other options on this list. Thanks to the Class D technology, this amp is able to distribute the power over all channels equally and provides an amazing output through the speakers.
You can choose to use this amp with any configurations as it offers 75 Watts x 4 power output at 4 ohms and 155 Watts x 4 power output at 2 ohms. On the other hand, if you opt to set up a bridged connection, it can deliver up to 250 Watts x 2 power output at 4 ohms. Speaking of other features, it also features fully adjustable 12 dB/octave high and low pass Butterworth crossovers as well. In case you are concerned about the warranty, it does come with a 1-year warranty also.
Best Features:
- Max Power output is 2000 Watts
- Delivers 155 Watts RMS power per channel at 2 ohm
- Delivers 75 Watts RMS power per channel at 4 ohm
- Comes with a 1-year warranty
Pros:
- Premium build quality
- Power delivery is good
- Great for 2 ohm and 4 ohm setups
Cons:
- Not compatible with 8 ohm
8. Pioneer Amplifier
Well, here’s another premium option that you can consider picking as Pioneer is one of the most reputed brands and best-known for selling high-quality equipment for sound systems.
This amp is a perfect choice for you if you are looking for an amplifier for your 4-ohm speaker setup. Moreover, it’s also 2-ohm stable so running up them is not a problem at all either. Since the max power output of the amp is 1000 Watts, you can expect up to 125 Watts on each channel at 4 ohm impedance, and up to 250 Watts on each channel at 2 ohm impedance.
So, in both cases, you will get to experience a really loud and clear output from your speakers which is why this amp is liked and appreciated among the community. Apart from that, you also get all the necessary features like LPF, HPF, Gain control, bass boost, etc. which makes this amp one of the most user-friendly and advanced ones. Apart from that, Pioneer also offers a 1-year warranty for this amplifier.
Best Features:
- Max Power output is 1000 Watts
- Delivers 250 Watts RMS power per channel at 2 ohm
- Delivers 125 Watts RMS power per channel at 4 ohm
- Comes with a 1-year warranty
Pros:
- Highly compact
- Has adjustable LPF and HPF
- In-build bass boost
Cons:
- Expensive
9. Alpine Amplifier
Next up, we have another premium amplifier option coming from Alpine which is known to make one of the best-quality amplifiers, not only in terms of performance but also in terms of build quality as well.
The Alpine S-A32F S Series 4 Channel Digital Amplifier is a great pick for those who are using a 2 ohm speaker setup in their cars as this amplifier is particularly designed for that. Yes, it can perform on 4 ohm impedance as well, but you will have to compromise a little on the power in that case. The max power offered by this amp is about 640 Watts, which is divided into 80 Watts RMS per channel at 2 ohm impedance, and 55 Watts RMS per channel at 4 ohm impedance.
Thus, the sound quality that you can get out of this amplifier will be amazing in both cases, but for 2 ohm setups, it’ll just blow your mind. Apart from that, the amp also features variable low-pass filters and high-pass filters along with selectable bass boost, so listening to your favorite quality of music becomes so much easier if you have this amplifier installed in your car. On top of that, you will also get a 1-year warranty for this amp which makes it a perfect option to pick.
Best Features:
- Max Power output is 640 Watts
- Delivers 80 Watts RMS power per channel at 2 ohm
- Delivers 55 Watts RMS power per channel at 4 ohm
- Comes with a 1-year warranty
Pros:
- Minimal and elegant design
- Easy installation
- Variable low-pass filter and high-pass filters
Cons:
- A little pricey
10. Doulk Amplifier
Lastly, we would like to discuss the 4 channel amp from Douk Audio which is a perfect option for people who are not looking to spend much and just need a compact and budget-friendly amplifier to install in their car.
Being a highly versatile amplifier, it allows you to use one group of RCA connectors to use for audio output as well. On top of that, one of the most interesting features about this amp is that it features Bluetooth 5.0, so you can directly connect your mobile, laptop, tablets, directly with the amp and use it to play your favorite music in your car.
Speaking of its performance, the max power output that it offers is just about 200 Watts which is comparatively less than other options on this list. However, since it offers 50 Watts max power output per channel at 4 ohms, it can be great for those who want to upgrade their sound system in their old cars. Moreover, the compact size of this amp is yet another attractive feature that allows you to install it anywhere in the car easily. In addition, it also comes with a 1-year warranty.
Best Features:
- Max Power output is 200 Watts
- Delivers 50 Watts RMS power per channel at 4 ohm
- Built-in Bluetooth 5.0
- Comes with a 1-year warranty
Pros:
- Extremely compact
- Highly affordable
- Offers decent sound quality
Cons:
- Not compatible with 2 ohm speakers
Buying Guide to Purchase the 4-Channel Amplifiers
When it comes to enhancing your audio experience, investing in a quality 4-channel amplifier can make a significant difference. However, with a multitude of options available in the market, choosing the right amplifier can be a daunting task.
To help you make an informed decision, here are key factors to consider when selecting the best 4-channel amplifier:
1. Power Output
One of the primary considerations when choosing a 4-channel amplifier is its ability to amplify the audio (power) output. Look for amplifiers with sufficient power to drive your speakers effectively, especially crucial for those seeking heightened volume levels. The power output is usually measured in watts, with higher wattage indicating greater amplification capability.
The required power output depends on several factors, including the speaker’s impedance, listening area, and volume levels. A general rule is to look for a 4-channel amplifier with a minimum power output of around 50 watts per channel for decent audio quality. Opt for an amplifier with a higher wattage output per channel to enjoy higher volumes or use large speakers. So, choose them based on your audio setup and requirements.
Even a modest 100-watt increment post-installation can substantially enhance speaker performance. However, aiming for higher power outputs, such as those reaching 1000W or 2000W, promises superior sound quality and a broader soundstage, especially for enthusiasts of louder music.
2. Impedance Compatibility
Ensure that the amplifier is compatible with the impedance of your speakers. Impedance is the resistance to the flow of electrical current and is measured in ohms. Matching the impedance of the amplifier with that of the speakers ensures optimal performance and prevents damage to the equipment. Whether your speakers boast 2 Ohms or 4 Ohms impedance, ensure the amplifier aligns with your speaker system specifications. Mismatched impedance configurations can hinder optimal performance, necessitating meticulous alignment to harness the amplifier’s full potential.
3. Connectivity Options
Consider the connectivity options offered by the amplifier. Look for amplifiers that feature versatile connectivity options such as Bluetooth, USB, AUX, and RCA inputs. This allows you to connect various audio sources, including smartphones, tablets, and music players, providing flexibility and convenience.
4. Channel Configuration
Determine your audio setup requirements and choose the appropriate channel configuration. 4-channel amplifiers are ideal for systems with multiple speakers, providing separate channels for front and rear speakers. Additionally, consider whether the amplifier supports bridged mode for increased power output or bi-amping for enhanced audio performance.
5. Built-In Features
Evaluate the built-in features offered by the amplifier. Look for features such as built-in equalizers, crossover controls, and bass boost settings, which allow you to customize the sound according to your preferences. Additionally, some amplifiers may include advanced features like built-in DSP (Digital Signal Processing) for precise audio adjustments.
6. Size and Form Factor
Consider the size and form factor of the amplifier, especially if space is limited. Space constraints within vehicles necessitate the selection of a compact amplifier. Choose a compact and sleek amplifier that can easily fit into your audio setup without occupying too much space (with popular vehicle placements like beneath seats or behind dashboards). This ensures the amplifier remains inconspicuous, with wiring easily concealed. For bulkier models, ample space availability within the car is imperative to prevent potential damage. Additionally, consider the mounting options available to ensure easy installation.
7. Frequency Response
Amplifiers play a vital role in enhancing the frequency response of audio systems. Factory radio systems often produce flat, uninspiring sound due to limited frequency range. A quality amplifier can expand the frequency response, allowing speakers to reproduce a wider range of frequencies with greater detail and clarity in sound/music. Consider amplifiers with broad frequency response capabilities for improved sound quality and overall listening experiences.
8. Brand Reputation and Warranty
Research the reputation of the amplifier manufacturer, and their commitment to customer satisfaction (after-sales support) before making its purchase. Opt for trusted brands known for producing high-quality audio equipment. Additionally, check the warranty coverage (at least a year) offered by the manufacturer to ensure peace of mind and protection against any potential defects or malfunctions.
Verdict: Investing in the best 4-channel amplifier is essential for achieving superior audio quality and enhancing your listening experience. By considering all these key factors, you can make an informed decision and select the perfect amplifier to elevate your car audio experience to unparalleled heights.
4 Channel Amp – FAQs
Ans: While amplifiers won’t magically transform your car into a concert hall with Beyoncé by your side, they do play a crucial role in enhancing sound quality. Factory radio systems often struggle to deliver clear and dynamic audio signals to the speakers. An amplifier’s job is to amplify these signals, allowing you to hear the full spectrum of highs and lows that may be missed with a factory system. In essence, amplifiers don’t necessarily improve quality but rather ensure you hear the audio as intended.
Ans: A 4-channel amplifier provides versatility in speaker connections, but optimal performance is achieved when each channel powers one speaker. While it’s possible to connect multiple speakers to a single channel, doing so may compromise power distribution and affect sound quality. Typically, a 4-channel amp can accommodate up to 8 speakers, but for the best sound experience, it’s advisable to limit each channel to one speaker. Connecting more speakers requires parallel wiring, which can impact the amp’s power output.
Ans: Choosing the right amplifier for your subwoofer depends on various factors, including the subwoofer’s impedance and the amplifier’s compatibility. Amplifiers feature variable impedance capabilities, allowing them to connect to different types of speakers and subwoofers. However, when dealing with single-voice coil (SVC) subwoofers, precision is key. Match the impedance of the subwoofer to the corresponding channel on the amplifier—for instance, a 2-ohm SVC subwoofer should be paired with a 2-ohm amplifier channel. For optimal results and to avoid compatibility issues, consulting with a professional before purchasing is recommended.
Ans: While installing an amplifier can be a DIY project for those with experience in car audio installations, it may be challenging for beginners. Factors such as wiring complexity, space limitations, and ensuring proper connections require technical know-how. Professional installation ensures correct setup, minimizing the risk of damage to your vehicle or equipment.
Ans: The main difference between a 2-channel and a 4-channel amplifier lies in the number of speaker outputs they support. A 2-channel amplifier is designed to power two speakers (usually front left and right), while a 4-channel amplifier can power up to four speakers (front left, front right, rear left, and rear right). 4-channel amplifiers offer greater flexibility for multi-speaker setups, such as component speaker systems or adding rear speakers to your car audio system.
Ans: Matching amplifier wattage to speaker requirements ensures optimal performance and prevents damage to your speakers. To determine the appropriate amplifier wattage, consider the speakers’ RMS power handling capabilities. Ideally, the amplifier’s RMS output should be within the range specified by the speakers’ RMS power rating. Avoid underpowering or overpowering speakers, as both scenarios can result in distortion or damage to the equipment. If unsure, consult the manufacturer’s specifications or seek advice from audio professionals.
Ans: While 4-channel amplifiers are primarily designed for powering speakers, they can also be used to power a subwoofer in certain configurations. Some 4-channel amplifiers feature bridging capabilities, allowing two channels to be combined to drive a single subwoofer. However, dedicated mono or class D amplifiers are typically preferred for subwoofer applications, as they are optimized for low-frequency reproduction and deliver better bass performance. If using a 4-channel amplifier for a subwoofer, ensure it provides sufficient power and impedance compatibility for optimal subwoofer performance.
Summary: Choose Your Perfect 4-Channel Amplifier
In this article, we’ve presented the best 4-channel amplifiers for upgrading your car’s sound system. We hope you’ve found the ideal option for your needs. If you’re still unsure, refer to our buying guide for assistance. Alternatively, explore our expert recommendations for additional insight. Your perfect amplifier is waiting to enhance your car audio experience.
- If you’re on a budget, consider the Pyle Hydra Marine Amplifier Upgraded Elite Series 400. Despite its affordability, it offers features like an IP01 waterproof rating, making it suitable for both boats and cars. With a max power output of 400 Watts and a 1-year warranty, it’s a solid choice.
- For those willing to splurge, the Rockford Amplifier 500-Watt 4-Channel Amplifier is a premium option. Known for its impressive power output and durable build, it features 12 dB/octave high and low pass Butterworth crossovers, bass equalizer, and other adjustment options. Backed by a 1-year warranty, it’s a profitable investment.
- If you’re after raw power without breaking the bank, the Planet Car 4-Channel Amplifier is worth considering. Offering approximately 2400 Watts of power output, it also includes Low and High-Level Inputs, Variable Filter, Variable Bass Boost, and a generous 6-year warranty. An excellent choice for performance enthusiasts.
Feel free to share your thoughts and questions in the comments below. We’re here to help!
One Response
Im confused on one thing if you have speakers in front and back and one speaker per channel is best. Then i wont be able to connect my polk db subwoofer right? Ill have to buy a seperate amp for my sub?