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Best Car Amplifiers

Amplifiers are a crucial part of any audio system. A good amplifier can send speakers the power they need to perform well. This can make the difference between your music sounding flat and lifeless, and it sounding clean, crisp, and bright.

Rockford Fosgate Power T400-2 120W x 2 Car Amplifier

Considering the fact that the ‘Power’ series of amplifiers are Rockford Fosgate’s flagship offerings, you get a lot for your money with the Power T400-2. From the first glance, you can tell that the designers at Rockford Fosgate sweated the details, from high-quality connections (to reduce quality degradation at the connection) to the wrap-around heat sink with dynamic thermal management technology to reduce distortion-causing hot spots on the amplifier body. The Power T400-2 is capable of impressive power levels, from 120 watts RMS to 2 channels at 4 ohms, 200 watts RMS to 2 channels at 2 ohms, to a whole 400 watts RMS in bridged mode at 4 ohms. The circuitry inside this amplifier features advanced algorithms designed to eliminate distortion and interference, and the differential input design ensures that there is no cross-contamination between the signals. As is fitting for a flagship model from a company like Rockford Fosgate, this is a highly capable, reliable amplifier that shows no real weaknesses to speak of.

JL Audio XD200/2 75W x 2 Car Amplifier

JL Audio XD200/2 75W x 2 Car Amplifier

While the XD200/2 isn't part of JL Audio's renowned Slash v2 series, this compact amplifier has much to offer on its own. JL Audio specifies a varying amount of outputs depending on voltage and impedance, but the ratings top out at 75 watts RMS per channel at 4 ohms and 100 watts RMS at 2 ohms when connected to a 14.4-volt power supply. Bridged output totals 150 watts RMS at 8 ohms and 200 watts RMS at 4 ohms, meaning the XD200/2 can be used to drive a subwoofer as well. The XD200/2 is a Class D amplifier - this arrangement allows higher efficiency and less heat output. JL Audio's latest technologies ensure distortion is kept to a minimum, and the XD200/2 incorporates differential-balanced inputs from higher-end models to filter out unwanted electrical noise.

JL Audio JX360/2 Class A/B Two-Channel Full-Range Amplifier

JL Audio's entry-level JX360/2 represents a no-frills, high-performance amplifier which forgoes flashy styling or extraneous features to achieve a more affordable price tag. This Class AB amplifier puts out 110 watts RMS per channel when connected to 4-ohm speakers, with output rising to 180 watts RMS with a 2-ohm impedance. Bridging the outputs nets 360 watts RMS, which is 4-ohm stable. While the JX360/2 is not as versatile as higher-end JL Audio amplifiers such as the Slash v2 in terms of speaker pairings, the JX360/2 provides solid performance with very little distortion. However, keep in mind that this Class AB amplifier requires airflow for cooling, especially considering the fact that it is not equipped with an internal fan.

Rockford Fosgate P500X2 Punch 2-Channel Amplifier

Rockford Fosgate's Punch series amplifiers represent a good mix of performance and affordability, leaving very few reasons to spend more money. The Punch P500X2 puts out 150 watts RMS per channel at 4 ohms, 250 watts RMS per channel at 2 ohms, and 500 watts RMS bridged at 4 ohms, so there's no doubt that it lives up to its name. A built-in processor ensures speaker impedance changes or short circuiting won't damage anything, and there are status lights on the exterior to give you feedback as to whether your source is distorting or not. As expected from a Rockford Fosgate amplifier, heat management is a top priority - the proprietary MEHSA cooling process ensures that this Class-AB amplifier can remain cool. Rockford Fosgate includes a test tone CD to help set up the gain, and more test tones can be downloaded if needed. Variable high and low pass filters and PEQ2 bass and treble boost allow for more fine tuning. While $400 may sound like a lot of money for a 2-channel amplifier, the extra performance and flexibility is well worth the higher price tag.

Focal FPS 2160 2-Channel Class AB Symmetric Amplifier

Focal is renowned for its high-performance products, and the company's amplifiers are no different. The FPS 2160 puts out 105 watts RMS per channel at 4 ohms, 180 watts RMS per channel at 2 ohms, and 360 watts RMS bridged at 4 ohms. While the output is exceeded on paper by numerous competitors, the FPS 2160 easily outperforms them all in the real world. The thermostat-controlled cooling fan and heavy heatsink ensure cool operation, and an optional capacitor module can improve power efficiency. The FPS 2160 features algorithms that can clip signals on demand to reduce distortion, and signal paths have been designed specifically to maintain sound fidelity and minimize external interference. All of this attention to detail comes at a price, however - it's definitely expensive, and will appeal to a limited group of enthusiasts.

JL Audio Slash 300/4v3 Amplifier

The JL Audio Slash series has been a reliable choice for years, and the latest updates make it even better. The 300/4v3 puts out 75 watts RMS per channel, or 150 watts RMS through 2 channels when bridged. As before, JL Audio's regulated power supply system allows this output to be steady at any impedance between 1.5 and 4 ohms, which ensures flexibility. A cast aluminum heatsink keeps temperatures down to keep reliability high, and differential-balanced inputs keep noise low for clean, distortion-free sound. Variable high and low pass filters allow users to custom-tailor setups. While the price may cause some to reconsider, the extra money is well worth it for JL Audio's renowned performance.

Rockford Fosgate Power T600-4 100W x 4 Car Amplifier

With the aptly-named Rockford Fosgate Power T600-4, you get what you pay for, and then some. Packed to the heat sinks with the latest in amplifier technology, the Power T600-4 fits neatly into Rockford Fosgate’s flagship Power line of amplifiers. You get 100 watts RMS at 4 ohms or 150 watts RMS at 2 ohms in 4-channel mode, and the outputs can be bridged to provide up to 300 watts RMS at 4 ohms. Big power aside, the Power T600-4 also comes with Rockford Fosgate’s Dynamic Thermal Management technology, which ensures that the heat is distributed evenly throughout the chassis and heat sinks to eliminate ‘hot spotting’ that can decrease performance. The Power T600-4 is fitted with all manners of filters and signal isolation algorithms to ensure distortion-free sound quality. All in all, the Rockford Fosgate Power T600-4 is definitely a premium piece of equipment – if you can afford the price tag, by all means go for it.

Pioneer Premier PRS-D4200F

Pioneer's high-end equipment usually deserves serious consideration, so it should come as no surprise that one is listed here for 'best 4-channel car amplifier'. This particular model is part of Pioneer's 'Stage 4' collection of the highest-performing car audio components, including the DEX-P99RS CD player. The PRS-D4200F is equipped with ICEpower components, which allow this amplifier to put out clean, distortion-free signals. Total power output is 75 watts RMS at 4 ohms and 150 watts RMS at 2 ohms, or you can bridge the connections for a total of 300 watts RMS through 2 channels. Pioneer has gone to great lengths to ensure that the signal output is distortion-free, including equipping the PRS-D4200F with gold-plated speaker terminals. The class D design of the amplifier ensures high efficiency and low heat, so the PRS-D4200F is reliable as well as powerful.

Alpine PDX-F4 Car Amplifier

The Alpine PDX-F4 proves that not all powerful amplifiers have to come in giant sizes. This particular amplifier is of a Class-D design, which means a smaller overall package is possible while keeping high power output levels. The dimunitve size of the PDX-F4 hides the fact that this amplifier puts out 100 watts RMS per channel, whether set up with 4 ohm or 2 ohm impedance ratings. Bridging the outputs yields 200 watts RMS through 2 channels, which is suitable for connecting subwoofers. If your car or truck is tight on space, Alpine designed these amplifiers to be stacked on top of one another, thereby saving even more space than comparable 'compact' amps.

Kenwood eXcelon Digital 4-Channel Car Amplifier

Kenwood's Excelon-branded amplifiers represent the best of what the brand has to offer, and the XR400-4 is a superb choice. The Class-D design of this amplifier allows it to have a slim, low profile body that allows it to fit in many different places. The XR400-4 powers each channel with 75 watts RMS at 4 ohms, and 100 watts RMS at 2 ohms. When bridged, output is 200 watts RMS at 4 ohms. The XR400-4 is also bi-amp capable, meaning that it can power the tweeters and woofers separately. This provides plenty of adjustment options such as separate gain and filter controls for the front and rear channels. All in all, the Kenwood Excelon XR400-4 provides clean, distortion-free sound and plenty of flexibility at a price that won't break the bank.

Alpine PDX-M6 Car Amplifier

Alpine has updated and simplified their PDX amplifier lineup, with the PDX-M6 being the 'less-powerful' of the two. Still, the total output of at least 600 watts RMS at either 2 or 4 ohms is nothing to be scoffed at. This compact amplifier is of a Class-D design, so it runs cooler despite the smaller overall size. Another benefit of the PDX-series amplifiers is that they can be stacked on top of one another, reducing the amount of space needed for installation. With its sleek, versatile design, high overall performance, and reasonable price tag, there's absolutely no reason why the Alpine PDX-M6 shouldn't be a first choice for a subwoofer amplifier.

JL Audio Slash 600/1v3 Mono Subwoofer Car Amplifier

The JL Audio 600/1v3 is part of the newly redesigned Slash v3 series, boasting more consistent performance without sacrificing anything else. The 600/1v3 packs plenty of punch with 600 watts RMS at 1.5 to 4 ohms, giving users enough flexibility for any installation. The Class-D design allows the 600/1v3 to remain relatively compact, opening up installation options. Differential-balanced inputs isolate the signal's ground from the chassis ground, so you get reduced noise and increased compatibility with a wide variety of systems. JL Audio's "Regulated, Intelligent Power Supply" system ensures that power is kept steady at any impedance between 1.5 and 4 ohms, so you won't have any interruptions to your sound. With plenty of performance in a small size, along with JL Audio's build quality and reliability, the 600/1v3 is an excellent choice if you're looking for a solid subwoofer amplifier.

JL Audio HD750/1 750W RMS Car Amplifier

JL Audio's HD series differentiates itself from the already-excellent Slash series by offering more output and better sound quality. The HD750/1 delivers 750 watts RMS from 1.5 to 4 ohms, all in a compact overall package. The Class-D design means that the amplifier takes up less space and draws less power, all while generating less heat and providing every bit as much performance. JL Audio's Single Cycle Control eliminates distortion issues, delivering excellent sound clarity. The HD750/1 also has a healthy feature set, starting with a variable high and low pass filter, subsonic filter and output polarity control, and an optional wired remote that can be used to adjust levels without needing to access the amplifier itself. Removable power and rear plugs make setup easier, as do speaker and preamp level inputs and a preamp output. Differential-balanced inputs eliminates noise from the rest of the electrical system, ensuring that your sound is always clean and clear. Good features, performance, and reliability make this amplifier stand out as an excellent choice.

Rockford Power T500-1BDCP Mono Amplifier

With the ability to drive a 1 ohm load, the Rockford Fosgate T500-1bdCP does not skimp on performance when it comes to bass. Offering output of 300 watts RMS at 4 ohms, and 500 watts RMS at both 1 and 2 ohms, this efficient Class-BD amplifier offers enough performance to drive some of the largest subwoofers around. Rockford Fosgate's dynamic thermal management ensures that things never get too hot, even when the amplifier is working hard. Constant Power technology monitors performance to perfectly adjust the amplifier's output to correct for natural speaker impedance fluctuations, resulting in a claimed 25% increase in total power output. Features include a variable low pass filter, selectable subsonic filter, and variable bass boost with an optional wired remote. A 24/dB per octave crossover helps provide more natural sound. The best part is the price - at around $500 online, Rockford Fosgate manages to undercut its competition without ceding an inch of performance.

Focal FPP 1000 Monoblock 500W RMS FPP Series Amplifier

First and foremost, Focal produces only high-end audio products. The FPP 1000 does not disappoint, offering outstanding performance combined with unique features. Lots of control over bass settings make the Focal FPP 1000 stand out from the crowd. This Class-AB amplifier has a variable low pass filter, a subsonic filter, variable bass boost, and a less-commonly seen phase switch along with an included wired remote for level control. A heavy aluminum chassis disperses heat, so shut downs and interruptions become an absolute rarity. With output of 300 watts RMS at 4 ohms, and 500 watts RMS at 2 ohms, this amplifier has plenty of power to drive one or two subwoofers with authority. Differential-balanced inputs help eliminate noise, ensuring that sound will always be clean and free of distortion. With lots of performance and the ability to fine tune your bass to just how you like it, the Focal FPP 1000 is a great choice.

Rockford Fosgate Power T600-2 200W Car Amplifier

Rockford Fosgate doesn't mess around when it comes to serious car audio, and the Power T600-2 will quell any disbelief. The T600-2 is rated at 200 watts per channel at 4 ohms, and 300 watts at 2 ohms. This is easily enough power to play your music loudly enough to get you in trouble with the authorities. Alternatively, you can bridge the outputs to power a subwoofer with up to 600 watts at 4 ohms, ensuring that you get the bass you want. Due to the Power series being the flagship models, the T600-2 receives everything that Rockford Fosgate has to offer including differential inputs to erase signal noise and Dynamic Thermal Management to ensure that the heat never builds up in one spot. The built-in equalizers allow you to tune out the frequencies that your speakers cannot handle, and the bass boost will pump up the bass if you're so inclined. The Rockford Fosgate Power T600-2 is a superior unit in every way imaginable, making it one of the best 2-channel amplifiers for sale today.

Focal FPS 2300RX Amplifier

Focal already has a well-deserved reputation for producing only top-quality products, so the inclusion of a 2-channel Focal amplifier as a 'high-end' pick should be expected. This rather serious-looking 2-channel amplifier pumps out a stout 155 watts RMS through 2 channels when connected to 4-ohm impedance speakers, with output rising to 265 watts RMS with 2-ohm impedance drivers. Bridging the connections will net 530 watts RMS at 4 ohms and 750 watts RMS at 2 ohms - more than enough to extract heavy bass from a suitable subwoofer. The chunky cooling fins and active fan cooling ensure that the amplifier stays cool, and the FPS 2300RX supports Focal's 'High Cap' plug-in capacitors if more power is needed for heavier hits. As well, the FPS 2300RX carries Focal's traditional high price tag, so consider this amplifier only if you're building a true audiophile-grade sound system in your car.

Pioneer PRS-D800 Class FD 2-Channel Bridgeable Amplifier

While most amplifiers have multiple filters to customize sound output, the Pioneer PRS-D800 does without any of that in the pursuit of keeping sound pure. Putting out 125 watts RMS per channel at 4 ohms, 150 watts RMS per channel at 2 ohms, and 300 watts RMS at 4 ohms when bridged, this amplifier has plenty of power to drive a quality setup. With its Class-FD design, it is also very compact while blessed with the ability to run at cooler temperatures than other amplifier designs. Anti-vibration material and custom-made capacitors minimize distortion, while oxygen-free copper coils ensure excellent connection to the speakers so output will always be accurate and clean.

Rockford Fosgate P1000X2 Punch 2-Channel Amplifier

Rockford Fosgate's Punch P1000X2 delivers impressive power, putting out 300 watts RMS per channel at 4 ohms, 500 watts RMS per channel at 2 ohms, and 1000 watts RMS at 4 ohms when bridged. Variable high and low pass filters allow you to customize how this is delivered to your speakers, along with a variable PEQ2 bass and treble boost. An optional wired remote can be used for level control, and also includes a status light that can alert users when music is clipping. Rockford Fosgate's C.L.E.A.N. gain setup system allows you to use test tones (included on a CD, as well as providing downloadable options) to easily set up your system to put out as much power as possible while keeping the sound clean. Advanced thermal management systems work in conjunction with the heavy heatsink, keeping internal components cool and ensuring that you won't need to worry about heat-related interruptions.

Alpine MRP-F300 4/3/2 Channel Power Amplifier

Alpine's V-Power series of amplifiers offer the best bang for your buck, and the MRP-F300 is no exception. Alpine claims that these models offer the 'best dollar-per-watt performance', and they aren't lying: the MRP-F300 sends 50 watts through its four channels at 4 ohms, and 75 watts at 2 ohms. The outputs can also be bridged, and in that mode the MRP-F300 will send 150 watts to a pair of subwoofers at 4 ohms. Power isn't the only thing that the MRP-F300 is good at, with Alpine equipping it with special circuitry and shielding to eliminate unwanted noise and interference that spoils your music. Great sound doesn't necessarily mean expensive, and Alpine has demonstrated that with the MRP-F300.

Infinity Reference 475a 4-CH Car Amplifier

The Infinity Reference 475a represents somewhat of an oddity in this day and age, thanks to its Class-AB architecture. It's plenty powerful for the money - 75 watts RMS per channel at 4 ohms (90 watts RMS per channel at 2 ohms) is nothing to be scoffed at. It can also be bridged to 2-channel mode, putting out 180 watts RMS at 4 ohms. Because this is a Class-AB amplifier, heat generation becomes a concern. Infinity has gone to great lengths to ensure that the Reference 475a remains reliable and will not shut down during hard use, though this is reflected in the added bulk of the chassis. Variable frequency filters and adjustable bass boost (up to 6dB) allow you to tailor the sound, while direct connect terminals and preamp outputs make setup simple.

Kenwood KAC-8405 Car Amplifier

Good performance in a compact size can come at a low price, as proven by the Kenwood KAC-8405. This amplifier puts out 60 watts RMS per channel at 4 ohms or 90 watts RMS per channel at 2 ohms; when bridged, it delivers 180 watts RMS at 4 ohms. Dual cooling fans and a cast-aluminum heatsink keep things cool, so your amplifier will work reliably. Variable high and low pass filters as well as variable bass boost (up to 18dB) allow customization of the sound to your liking, while speaker-level inputs and signal sensing turn-on allow easy setup without requiring preamp outputs from the stereo.

JX360/4 - JL Audio 4-Channel 360W Class A/B Amplifier

JL Audio's budget-friendly JX series has won recognition for years, thanks to a simple formula that prioritizes performance without the high price tag. Delivering 70 watts RMS per channel at 4 ohms (90 watts RMS per channel at 2 ohms) and 180 watts RMS at 4 ohms when bridged, the JL Audio JX360/4 offers plenty of power for the money. High quality materials ensure that this amplifier feels very sturdy, and the heat sink arrangement provides proper heat management. Speaker-level inputs as well as preamp inputs and outputs help make setup easy, along with variable high and low pass filters to adjust the sound to your liking. Overall, the JL Audio JX360/4 delivers stable performance and clear sound at an affordable price.

Rockford Fosgate R400-4D 400 Watt Full-Range Class-D 4-Channel Amplifier

The Rockford Fosgate Prime R400-4D delivers plenty of punch with 75 watts RMS of output per channel at 4 ohms, 100 watts RMS per channel at 2 ohms, and 200 watts RMS bridged output at 4 ohms. Being a Class-D amplifier, it can fit in small spaces while running cool to ensure long-term reliability. Variable high and low pass filters as well as Rockford Fosgate's Punch EQ bass boost (up to 18dB) ensure that you'll be able to make your system sound how you want it to. Overall, this is an excellent amplifier with a lot of performance crammed into its compact size, especially when considering the price.

JL Audio JX360/2 Class A/B Two-Channel Full-Range Amplifier

JL Audio's entry-level JX360/2 represents a no-frills, high-performance amplifier which forgoes flashy styling or extraneous features to achieve a more affordable price tag. This Class AB amplifier puts out 110 watts RMS per channel when connected to 4-ohm speakers, with output rising to 180 watts RMS with a 2-ohm impedance. Bridging the outputs nets 360 watts RMS, which is 4-ohm stable. While the JX360/2 is not as versatile as higher-end JL Audio amplifiers such as the Slash v2 in terms of speaker pairings, the JX360/2 provides solid performance with very little distortion. However, keep in mind that this Class AB amplifier requires airflow for cooling, especially considering the fact that it is not equipped with an internal fan.

Pioneer GM-3500T 2-Channel Bridgeable Amplifier

Affordability doesn't mean needing to sacrifice performance and quality, as proven by Pioneer's GM-3500T. This amplifier has a small footprint and good build quality for the price, and delivers ample power despite not having a large number of features. With output rated at 60 watts RMS per channel at 4 ohms, 85 watts RMS per channel at 2 ohms, and 185 watts RMS at 4 ohms with the channels bridged, the GM-3500T has enough power to noticeably enhance your daily listening experience. While there is no adjustable crossover, speaker-level inputs simplify setup, and a selectable low pass filter allows for some customization of the sound.

Rockford Fosgate Punch P300X2

Putting out 100 watts RMS per channel at 4 ohms, 150 watts per channel at 2 ohms, and 300 watts RMS at 4 ohms when bridged, the Rockford Fosgate Punch P300X2 delivers plenty of what its name promises - punch. The cooling system incorporates a large heatsink to make sure that heat dissipates without harming internal components. The amplifier gives you real-time feedback through an indicator light to let you know if your source is distorting, and the system can track changes in speaker impedances to prevent damage from output spikes. The test tone CD helps with fine-tuning the overall output, and the various customization options ensure plenty of flexibility.

Rockford Fosgate R150X2 Prime 2-Channel Amplifier

It's easy to dismiss Rockford Fosgate's Prime lineup as the 'entry-level' choice, but doing so would be a big mistake. This Class-AB amplifier is quite slim and easy to set up, while delivering good power and clean sound for the price. The Prime R150X2 puts out 50 watts RMS per channel at 4 ohms, 75 watts RMS per channel at 2 ohms, and 150 watts RMS at 4 ohms when bridged - while these numbers may not blow away the competition, the output is respectable for the money. A heavy cast-aluminum chassis helps with heat management, and the amplifier monitors the output current and power supply temperature to avoid any damage to components. Variable high and low pass filters as well as variable bass boost allow control over the sound output. At just over $100, the Prime R150X2 is nearly a no-brainer.

Kenwood KAC-1502S 350 Watts 2 Channel Car Power Amplifier

While Kenwood's amplifiers may not benefit from the same sort of reputation enjoyed by Rockford Fosgate or JL Audio, the company is known for producing quality products. The Kenwood KAC-1502S puts out 60 watts RMS per channel at 4 ohms, 75 watts per channel at 2 ohms, and 150 watts RMS at 4 ohms when bridged. Even without factoring in the low price, this performance is consistent with its direct competition. Despite its Class-AB design, this amplifier is quite compact and can easily fit in most places in your vehicle. Setup is easy with speaker and preamp level inputs, while a fixed low pass filter allows you to have more control over bass output. While these more affordable amplifiers tend not to have quite as much longevity as more expensive ones, the Kenwood KAC-1502S offers a compelling combination of good power and quality for a low price.

Alpine MRP-M500 500W Mono Amplifier

The Alpine MRP-M500 provides the kind of power to your subwoofer that will rattle windows at full volume. With a full 300 watts at 4 ohms, you will definitely not be left wanting for more bass. Better still, the MRP-M500 is capable of sending up to 500 watts through its channel at 2 ohms, for even more bass performance. The Class D design allows the MRP-M500 to stay cool even with the high power levels, and the heat sinks take care of excess heat. The MRP-M500 also offers a variable low-pass filter so you can tune out the frequencies that your subs cannot handle, for more efficient operation. For the money, the Alpine MRP-M500 offers truly stellar performance.

JL Audio JX500/1 Car Amplifier

Underneath the plain exterior design of the JL Audio JX500/1 lies quality components which make up the Class AB amplifier. This mono amplifier puts out an impressive 500 watts RMS with a 2-ohm impedance, with a still-high 340 watts RMS at 4 ohms. This is enough power to drive even midrange subwoofers with higher power handling ratings, which leaves little doubt that the JX500/1 is an excellent value for the price. However, the disadvantage of the 'budget' construction make themselves known. The JX500/1 lacks cooling fins or an internal fan - as paired with a hot-running Class AB amplifier, it becomes essential to ensure that adequate cooling measures are taken to prevent overheating or damage to the components.

Kenwood X500-1 500W Mono Amplifier

The Kenwood Excelon X500-1 can be considered an oddity, as it combines a budget-friendly price tag with the company's flagship 'Excelon' sub-brand. A unique aluminum heatsink design helps keep the X500-1 cool even during hard use, while an intelligent thermal management system keeps track of temperature so you won't need to worry about the amplifier shutting down. This Class-D amplifier is still very compact, providing flexibility when it comes to installation. Output is 300 watts RMS at 4 ohms or 500 watts at 2 ohms, and you can optimize performance using the variable low pass filter and bass boost (up to 18 dB). While the Excelon X500-1 does not have a huge list of features, its simple controls and power output for the price make this budget-friendly amplifier a great choice.

JL Audio XD600/1 600 Watt Class D Monoblock Subwoofer Amplifier

For big sound in a small and reasonably-priced package, the JL Audio XD600/1 excels. With 400 watts RMS at 4 ohms and 600 watts RMS at 2 ohms, this Class-D amplifier offers good power and control in a compact size. Sound adjustments are achieved through a variable low pass filter and subsonic filter, while an optional wired remote allows for level control without needing direct access to the amplifier itself. A cast alloy heatsink and cooling system prevent thermal shut downs, so you'll be able to enjoy your clear and crisp sound even after long periods of hard use.

Kenwood KAC-9105D Car Amplifier

The Kenwood KAC-9105D is extremely popular for a reason, with its output of 500 watts RMS at 4 ohms and 900 watts at 2 ohms. It is even 1 ohm stable, meaning you can have incredible bass from multiple subwoofers. A cast aluminum heatsink and dual cooling fans ensure that thermal shut downs aren't a concern, although it is worth noting that fans can create a bit of noise. A variable low pass filter, subsonic filter, phase switch, and bass boost (up to 18dB) provide plenty of controls so you can adjust your sound just how you want it. Small, easy to install, and punching above its weight in terms of performance, the Kenwood KAC-9150D is a great choice for the price.

JL Audio HD600/4 4-CH Car Amplifier

The JL Audio HD600/4 hides powerful performance into a deceptively small package. With the ability to send up to 150 watts per channel at anywhere from 1.5 ohms to 4 ohms without impacting sound quality, the HD600/4 definitely has the muscle to produce big-time sound. The outputs can also be bridged, resulting in up to 300 watts to a pair of subwoofers at anywhere from 3 ohms to 8 ohms, proving the HD600/4 to be a very versatile system. The HD600/4 incorporates technologies designed to bring you the clearest, most high quality sound, including differential inputs and distortion filtering. The Class D design allows the HD600/4 to run cool, and the heat sinks are more than up to the job of dissipating the excess heat. The JL Audio HD600/4 is a class act in terms of performance, which is enough to earn it a spot in the high-end category with ease.

Focal FPS 4160 4 Channel Car Amplifier

Looking at the bare spec sheets of the Focal FPS 4.160, this amplifier does not seem like much of a big deal. This Class-AB amplifier puts out 120 watts RMS per channel at 4 ohms, rising to 160 watts RMS at 2 ohms. As usual with Focal, the FPS 4.160 pulls ahead due to the considerable attention to detail. The connections reveal the fact that the amplifier is symmetrical, with all of the internal wiring kept carefully separated to reduce noise. The resulting sound output is amazingly clean and free of signal noise. Large heat sinks surround the chassis, and a fan actively keeps the components cool under load. The FPS 4.160 is compatible with Focal's own High Cap external capacitors for extra stability. This level of performance and the superb build quality come with a high price tag - at over $1000 each, the Focal FPS 4.160 is definitely not a bargain.

Rockford Fosgate Power Series T800-4ad 4 Channel Amplifier

The Power T800-4AD certainly lives up to Rockford Fosgate's excellent reputation for performance. The Power series represents Rockford's top-of-the-line amplifier, with more features, performance, and proprietary technologies. With output of 150 watts RMS per channel at 2 to 4 ohms and 200 watts RMS per channel at 1 ohm, there's plenty of power, as per its namesake. Bridged, output jumps to 300 watts RMS at 4 ohms and 400 watts RMS at 2 ohms. Rockford Fosgate has packed the Power T800-4AD with lots of technology and features to ensure top-notch performance and reliability. Constant Power corrects for natural variations in speaker impedance, and results in up to a 25% increase in total power output compared to a standard amplifier. To keep internal components cool, the Power T800-4AD includes a 3-stage cooling system that effectively dissipates heat across the amp and through the heatsinks. Differential Input circuitry ensures that all sound is free of any noise or distortion. Variable high and low pass filters and variable bass and treble boost (with an optional remote) provide the flexibility to fine tune your setup. All in all, the Rockford Fosgate Power T800-4AD boasts excellent performance and reliability in a compact size, making it an excellent option.

Alpine PDX F6 Amplifier 4-Channel

The second-generation Alpine PDX-series amplifiers are slightly smaller than the original models, yet retain the powerful performance that made the PDX so popular among enthusiasts and audiophiles. The Class-D amplifier allows more efficient operation from a smaller size chassis while remaining cooler under stress. The PDX-F6 puts out 150 watts RMS at both 4 ohms or 2, and bridged output climbs to 300 watts RMS. As before, the PDX-F6 can be stacked on top of other PDX amplifiers to save space while retaining full functionality. Alpine supplies a 'verification certificate' with the PDX-F6 which shows the true output of your particular amplifier as it was tested before leaving the factory. Considering its performance, the Alpine PDX-F6 stands out as somewhat of a bargain.

Pioneer PRS-A900 Amplifier Stage 4 4-channel

With the PRS-A900, Pioneer observes a different design philosophy. This expensive amplifier is designed for Pioneer's flagship 'Stage 4' system, which focuses on maximum audio fidelity. Compared to other high-end amplifiers, 50 watts per channel seems downright laughable. This may be what the PRS-A900 offers in terms of raw power, but where this unit really shines is in its internal design. In an effort to produce the clearest, most accurate, distortion-free sound, Pioneer has cut no corners and spared no expense when engineering the PRS-A900. As a result, the PRS-A900 comes with two separate power supplies to eliminate noise caused by lesser amplifiers when mixing signals. This attention to detail is continued with the built-in heavy-duty capacitors which are designed to keep the power flow smooth through spikes and drops. Pioneer also identified vibration as a key cause of distortion and went to great lengths to remove it, and the PRS-A900 comes with a specially designed shock-absorbing chassis and copper mounts for the transistors. While none of this attention to detail is strictly necessary, it shows just how much Pioneer put into designing the PRS-A900 - a high-performance amplifier that places its focus on being as accurate and pure as possible as opposed to pumping all-out power through your speakers.

JL Audio HD1200/1 - Monoblock 1200W Subwoofer Speaker Amplifier

When looking at amplifiers that command a higher price tag, expectations of what they offer go up. The JL Audio HD1200/1 meets those expectations with its steady and strong performance. Total output of 1200 watts RMS is delivered from 1.5 to 4 ohms thanks to a regulated power supply, and despite all that power, the amplifier runs cool. It is even stackable with other HD series amplifiers, making installation simpler. A variable high and low pass filter, switchable subsonic filter, and output polarity control allow you to fine tune the sound, and level control can also be achieved through the optional wired remote. Removable power and speaker plugs make installation easy, and the amplifier's small size means it can fit pretty much anywhere you want. JL Audio even supplies a chart showing ideal voltage matched with ohm load so you can set the gains using a volt meter. With its outstanding performance and high-fidelity sound, the JL Audio HD1200/1 easily justifies its higher price tag.

Focal FPS 1500 Car Amplifier

The Focal FPS 1500 delivers 320 watts RMS at 4 ohms and 550 watts RMS at 2 ohms, which is already lots of power. However, it is also 1 ohm stable, delivering 800 watts RMS at this low-impedance load. An optional High Cap outboard capacitor module increases power efficiency, but either way, this amplifier delivers clean and powerful bass without interruptions. There are also enough controls to tailor sound, with variable low pass filters, a switchable subsonic filter, phase switch, and variable bass boost up to 9dB. As with Focal's other amplifiers, the FPS 1500 boasts the ability to clip signals in real-time to prevent distortion and damage. The cooling fans are controlled by a built-in thermostat, and the heavy heat sink helps keep components running cool. With excellent sound fidelity, minimum interference, lots of power, and plenty of features packed into a reliable and compact package, the Focal FPS 1500 is a stand out amplifier.

Alpine PDX-M12 Car Amplifier

Alpine's PDX-series amplifiers are well-known amongst enthusiasts for their ability to provide lots of clean power from a tiny package. The PDX-M12 represents Alpine's flagship mono amplifier, capable of putting out at least 1200 watts RMS at 4 or 2 ohms. Each amplifier comes with its own 'birth certificate' which displays the actual power output of that particular unit as measured by Alpine - most units put out more power than the advertised norm. Despite being a 'Class D' amplifier, Alpine has put painstaking research and development into ironing out distortion and maximizing the frequency response range, making the PDX-M12 a top choice for audiophiles. As with the previous-generation PDX amplifiers, the PDX-M12 can be stacked atop other second-generation PDX amplifiers in order to save space and maintain a clean installation.

JL Audio Slash Series 1200/1v3 Mono Subwoofer Car Amplifier / 1,000 watts RMSx1

JL Audio's Slash series amplifiers are impressive performers to begin with, so it makes sense that the top-of-the-line Slash 1200/1v3 model would be included here. Starting out, JL Audio's regulated power supply system allows the 1200/1v3 to maintain steady output of 1200 watts RMS at any impedance between 1.5 and 4 ohms, so you won't need to worry about interruptions to your sound. Similar to the JL Audio 600/1v3 but with double the power, this amplifier offers clear and powerful sound, outstanding reliability, and plenty of controls - all in a (relatively) compact size characteristic of its Class-D design. Differential-balanced inputs reduce noise and increase compatibility with a wide range of systems, while a series of features allow you to fine tune your sound to how you like it. These include a variable low pass filter, variable infrasonic filter, and parametric EQ bass boost. Level control can also be achieved though the option wired remote, so there's no need to reach where you have the amplifier installed. Lots of power and natural sound with low distortion ensure that the JL Audio 1200/1v3 will keep up with whatever type of performance you demand from it.

Rockford Power T500-1BDCP Mono Amplifier

With the ability to drive a 1 ohm load, the Rockford Fosgate T500-1bdCP does not skimp on performance when it comes to bass. Offering output of 300 watts RMS at 4 ohms, and 500 watts RMS at both 1 and 2 ohms, this efficient Class-BD amplifier offers enough performance to drive some of the largest subwoofers around. Rockford Fosgate's dynamic thermal management ensures that things never get too hot, even when the amplifier is working hard. Constant Power technology monitors performance to perfectly adjust the amplifier's output to correct for natural speaker impedance fluctuations, resulting in a claimed 25% increase in total power output. Features include a variable low pass filter, selectable subsonic filter, and variable bass boost with an optional wired remote. A 24/dB per octave crossover helps provide more natural sound. The best part is the price - at around $500 online, Rockford Fosgate manages to undercut its competition without ceding an inch of performance.

JL Audio HD Series HD900/5 Amplifier

JL Audio’s HD series of amplifiers represent the best that this company has to offer. According to JL Audio, the HD900/5 is the result of combining two of their excellent Slash v2 amps: the 300/4v2 and the 500/1v2. The result is staggering performance, with all of the intelligent and convenient features that you find on the Slash v2 amplifiers. Versatility is the name of the game here, with different output levels designed to match voltage and impedance. You get 100 watts RMS through 4 channels at 4 ohms, or 75 watts RMS when the impedance is lowered to 1.5-3 ohms. The remaining channel receives 500 watts RMS at anywhere from 1.5-4 ohms, so you can be assured that your subwoofer will be suitably loud. Bridging the outputs nets 150 watts RMS through 2 channels from 3-6 ohms, and the ‘subwoofer’ channel remains unchanged in output. The HD900/5 is packed full of JL Audio’s best technologies, from high- and low-pass filters that you can adjust to eliminate the frequencies that your speakers cannot work with, preserving sound quality. The differential-balanced inputs separate the audio signal cables from the chassis ground, so your speakers are not muddled with background noise. Though the price may seem steep, this is easily one of the better amplifiers if you can spring for the price tag.

Alpine PDX-V9 5-Channel 900 Watt RMS Class "D" Amplifier

The Alpine PDX-V9 is capable of sending 100 watts RMS to four channels and 500 watts to your sub, at an impedance of 2 or 4 ohms. The compact and stackable design of this amplifier allows for easy and convenient setup, along with its front panel controls and pop-out connectors which have also been designed to reduce signal noise. A variable high pass filter on the front and rear channels as well as a variable low pass filter and variable subsonic filter on the subwoofer channel allow you to adjust the sound output to your liking. Adjustable crossovers add even more setup options, making this high-performing all-in-one amplifier an excellent choice.

Focal FPP 5300 5-Channel 500W RMS FPP Series Amplifier

The Focal FPP 5300 can be used to power 5 channels, or bridged into 2-channel mode to power your front speakers and your sub, bypassing the rear speakers altogether. With a regular setup, power output is 60 watts RMS x 4 and 160 watts RMS to the subwoofer at 4 ohms, or 200 watts RMS x 4 and 300 watts RMS to the subwoofer at 2 ohms. When bridged, output rises to 200 watts RMS per channel (x2) at 4 ohms and 300 watts RMS to the subwoofer at an impedance of 2 ohms. The heavy aluminum chassis disperses heat to make sure this amplifier will stay reliable - even with hard use. Variable high and low pass filters, as well as a variable bass boost and subsonic filter on the subwoofer channel allow for customization of the output. The Focal FPP 5300 delivers a powerful, natural sound, and lots of setup versatility - all of which justify the higher price compared to other 5-channel amplifiers.

JL AUDIO XD700/5 5-Channel 700 Watt Amplifier

It goes without saying that JL Audio knows a thing or two about building a quality amplifier. While the XD700/5 may not be one of the company's 'higher-end' offerings, this is an impressive amplifier on its own. Power output measures an even 100 watts RMS through 4 channels at 2 ohms, with the subwoofer receiving 300 watts RMS. The XD700/5 utilizes a Class-D amplifier, which explains its smaller exterior dimensions paired with efficient operation that allows cooler running temperatures. One of the main benefits of JL Audio's amplifiers is the added versatility that the 'differential-balanced inputs' brings - the interference-free design allows this amplifier to be used with even the stock stereo system.

Infinity Kappa Five 5-channel Amplifier

Aside from the sleek, handsome design, the Infinity Kappa Five is capable of generous performance. 4 of the 5 channels can be powered with 50 watts RMS at 4 ohms plus 200 watts RMS for the subwoofer at 4 ohms, with the output rising to 75 watts RMS at 4 ohms with 300 watts RMS to the subwoofer at 2 ohms. Bridged outputs will net 150 watts RMS at 2 ohms through 2 channels and 200 watts RMS to the subwoofer at 4 ohms. While these numbers pale in comparison to the rest in this company, this is still enough performance to make your music come alive through your speakers. Infinity equips the Kappa Five with adjustable high- and low-pass filters to eliminate frequencies that your speakers cannot handle, preserving sound quality in the process. The Thermal Protection technology is always on, ensuring that the components inside the chassis never overheat in order to maintain maximum reliability. The signal circuits are well-balanced and isolated, so the audio signals do not contain interference from the surroundings. This means that the Infinity Kappa Five can be used in high-interference systems, such as the stock stereo, giving you the most flexibility when setting everything up.

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