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Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
Amplifier Key Features
Amplifiers can offer a diverse array of features. If you select more than one feature, then you will view amplifiers that have ALL features selected. These include speaker-level inputs that facilitate seamless integration with factory audio systems, Bluetooth connectivity suitable for ATV/UTV or Classic vehicle setups, built-in DSPs that provide enhanced control over your audio signal, and a host of other functionalities to explore.
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.
Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.
Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
Remote bass/level controller
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Amp Bluetooth Connectivity
This feature will tell you if the amplifier has the capability to connect to a Bluetooth device.
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Kicker KEYLOC® (47KEYLOC) (Like New (Open Box))

KEY series powered line-out converter; RoHS Compliant

KEYLOC big
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Kicker KEYLOC® (47KEYLOC) (Like New (Open Box))

KEY series powered line-out converter; RoHS Compliant

• 2-channel active line output converter
• 2 speaker-level inputs with up to 400 watts RMS power handling
• 2 preamp-level outputs (up to 10V)

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List price $169.99
-25% $127.49

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• 2-channel active line output converter
• 2 speaker-level inputs with up to 400 watts RMS power handling
• 2 preamp-level outputs (up to 10V)

Kicker PXA600.1 (48PXA6001) (Open Box, Great)

850W Peak (600W RMS) Class D PXA Series Monoblock Marine and Powersports Amplifier

PXA600.1 big
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Kicker PXA600.1 (48PXA6001) (Open Box, Great)

850W Peak (600W RMS) Class D PXA Series Monoblock Marine and Powersports Amplifier

• 300 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 600 watts
• Class D 1 ohm Stable Monoblock Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
List price $429.99
-35% $279.99

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• 300 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 600 watts
• Class D 1 ohm Stable Monoblock Amplifier

 
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    All About

    Kicker Car Amplifiers
    Kicker amplifiers have been called "bulletproof" and it's easy to see why. Each one of their car amps is built solid from the ground up with nothing but quality components. Kicker even tests each amplifier that comes out of their factory and provides a birth sheet that shows exactly how much power that individual amp can put out. And guess what? Every single one of them always exceeds their rated power! That's right, that 1000 watt amplifier you just picked out does a lot more than 1000 watts!

    Kicker has an amplifier line for any budget, whether you're just starting out or if you want to go all out and win some sound competitions, Kicker has an amp for you.

    To start, the CX Series amplifier line packs in serious power at a seriously affordable price. These amps keep a nice small footprint to save you space while still providing plenty of juice for your subs and speakers. These amps even come with a side-mount option so you can stand them up on end for even more installation options. These amps come in Class-D mono, Class A/B 2-channel and 4-channel and in a hybrid Class-D and A/B 5-channel configurations so you can run any system big or small with a CX amp!

    Up next is the all new Kicker D-Series amplifiers. These amps utilize FIT™ (Fail-Safe Technology) technology to give you more power, clearer sound and an overall more reliable amp that will last you for years to come. These amplifiers also come with advanced crossovers and the KickEQ™ equalizer so you can custom tune for the perfect sound. And if that wasn't enough, you get all of that in an extremely compact chassis and up to 1500 watts of power!

    The top of the line Kicker KX amplifiers are the most compact amps that Kicker has to offer but don't let their small size fool you - These amps pack a punch! With over 2400 watts of power, these amplifiers will power just about any subwoofer you have to throw at them. These amps come in monoblock and multi-channel, full-range Class-D configurations. These amps have a flip open side cover that protects and hides the adjustable crossovers and bass boosts. Talk about sleek!

    Whether you're just venturing into the world of car audio, or if you're looking to win sound competitions, Kicker has an amplifier for you!
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    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.

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