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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.
Sonic Certified Amplifier
Sonic Certified amplifiers have been tested by the experts at Sonic Electronix to meet or exceed the wattage ratings provided by the manufacturer. If this is marked as Yes, then you can trust the wattage ratings. If marked as No, then we have tested the amplifier and it did not meet the advertised wattage ratings. If marked as Not Tested, then the Sonic Electronix experts have not yet been able to test the amp.
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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DS18 G1000.4D

1000 Peak (600W RMS) Class D Gen-X Series 4 Channel Full Range Car Amplifier

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DS18 G1000.4D

1000 Peak (600W RMS) Class D Gen-X Series 4 Channel Full Range Car Amplifier

• 90 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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DS18 G8400.4D

8400W Peak (4000W RMS) Class D Gen-X Series 4-Channel Car Amplifier

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DS18 G8400.4D

8400W Peak (4000W RMS) Class D Gen-X Series 4-Channel Car Amplifier

• 700 watts x 4 channel @ 4 ohm
• 1000 watts x 4 channel @ 2 ohm
• Bridged: 1700 watts x 2 channel @ 4 ohm
• Total RMS Power: 4000 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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DS18 G700.2D

700W Peak (360W RMS) Class D Gen-X Series 2 Channel Full Range Car Amplifier

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DS18 G700.2D

700W Peak (360W RMS) Class D Gen-X Series 2 Channel Full Range Car Amplifier

• 100 watts x 2 channel @ 4 ohm
• 180 watts x 2 channel @ 2 ohm
• Bridged: 360 watts x 1 channel @ 4 ohm
• Total RMS Power: 360 watts
• Class D 2 ohm Stable 2-Channel Amplifier

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DS18 QHL4

4-Channel Lossless Line Output Converter with Auto Turn-on and Speaker Emulator

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DS18 QHL4

4-Channel Lossless Line Output Converter with Auto Turn-on and Speaker Emulator

• 4-Channel lossless audio line output converter
• Lossless audio, double step down ratio
• Compact size with level matching controls (High/Low)
• Selectable auto turn-on remote out
• Features noise rejection and speaker emulator

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• 4-Channel lossless audio line output converter
• Lossless audio, double step down ratio
• Compact size with level matching controls (High/Low)
• Selectable auto turn-on remote out
• Features noise rejection and speaker emulator

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DS18 EXL-P2000X1D

2000W RMS Class D EXL Power Series Monoblock Car Amplifier with Bass Remote

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DS18 EXL-P2000X1D

2000W RMS Class D EXL Power Series Monoblock Car Amplifier with Bass Remote

• 500 Watts x 1 @ 4 ohm
• 1000 Watts x 1 @ 2 ohm
• Total RMS Power: 1000 Watts
• Class D 2-Ohm Stable Monoblock Amplifier

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DS18 FRP4K4TI

4000W RMS Class D FRP Series 4-Channel Compact Car Amplfier (Titanium)

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DS18 FRP4K4TI

4000W RMS Class D FRP Series 4-Channel Compact Car Amplfier (Titanium)

• 400 watts x 4 channel @ 4 ohm
• 700 watts x 4 channel @ 2 ohm
• 1000 watts x 4 channel @ 1 ohm
• Bridged: 1200 watts x 2 channel @ 4 ohm
• Bridged: 1800 watts x 2 channel @ 2 ohm
• Total RMS Power: 4000 watts
• Class D 1 ohm Stable 4-Channel Amplifier

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NVX XKIT04

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• 400 watts x 4 channel @ 4 ohm
• 700 watts x 4 channel @ 2 ohm
• 1000 watts x 4 channel @ 1 ohm
• Bridged: 1200 watts x 2 channel @ 4 ohm
• Bridged: 1800 watts x 2 channel @ 2 ohm
• Total RMS Power: 4000 watts
• Class D 1 ohm Stable 4-Channel Amplifier

DS18 Hydro NXL-M6

2700W Peak (1380W RMS) Class D NXL Series 6-Channel Car Amplifier

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DS18 Hydro NXL-M6

2700W Peak (1380W RMS) Class D NXL Series 6-Channel Car Amplifier

• 150 watts x 6 channel @ 4 ohm
• 230 watts x 6 channel @ 2 ohm
• Bridged: 440 watts x 3 channel @ 4 ohm
• Total RMS Power: 1380 watts
• Class D 2 ohm Stable 6-Channel Amplifier

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• 150 watts x 6 channel @ 4 ohm
• 230 watts x 6 channel @ 2 ohm
• Bridged: 440 watts x 3 channel @ 4 ohm
• Total RMS Power: 1380 watts
• Class D 2 ohm Stable 6-Channel Amplifier

DS18 DSP8.8BT

8-Channel Digital Signal Processor with Bluetooth

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DS18 DSP8.8BT

8-Channel Digital Signal Processor with Bluetooth

• 31-band parametric equalizer
• 8-channel RCA outputs
• Variable high-pass and low-pass filters
• Wireless control with DSP8.8BT app for Android and iOS devices

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• 31-band parametric equalizer
• 8-channel RCA outputs
• Variable high-pass and low-pass filters
• Wireless control with DSP8.8BT app for Android and iOS devices

DS18 SXE-2500.1D/BK

2500W Peak (800W RMS) Class D SXE Series Monoblock Car Amplifier with Bass Remote

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DS18 SXE-2500.1D/BK

2500W Peak (800W RMS) Class D SXE Series Monoblock Car Amplifier with Bass Remote

• 350 watts x 1 channel @ 4 ohm
• 600 watts x 1 channel @ 2 ohm
• 800 watts x 1 channel @ 1 ohm
• Total RMS Power: 800 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Black Brushed Aluminum Body Color

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DS18 Hydro NXL-X600.4D

1600W Peak Class D HYDRO Series 4-Channel Marine and Powersports Amplifier

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DS18 Hydro NXL-X600.4D

1600W Peak Class D HYDRO Series 4-Channel Marine and Powersports Amplifier

• 150 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total RMS Power: 1600 watts
• IPX6 waterproof rating
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

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DS18 SXE-2500.1D/RD

2500W Peak (800W RMS) Class D SXE Series Monoblock Car Amplifier with Bass Remote (Red)

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DS18 SXE-2500.1D/RD

2500W Peak (800W RMS) Class D SXE Series Monoblock Car Amplifier with Bass Remote (Red)

• 350 watts x 1 channel @ 4 ohm
• 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 800 watts
• Class D 1 ohm Stable Monoblock Amplifier

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DS18 MTLOC6

6-Channel High-to-Low Line Output Converter with Bass Remote

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DS18 MTLOC6

6-Channel High-to-Low Line Output Converter with Bass Remote

• 6-Channel line output converter
• 2/6-Channel input configurations
• Auto turn-on (Audio / DC / Remote)
• Anodized aluminum housing with noise protection
• Dash remote bass level control included

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• 6-Channel line output converter
• 2/6-Channel input configurations
• Auto turn-on (Audio / DC / Remote)
• Anodized aluminum housing with noise protection
• Dash remote bass level control included

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DS18 FRP4K4RD

4000W RMS Class D FRP Series 4-Channel Compact Car Amplfier (Red)

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DS18 FRP4K4RD

4000W RMS Class D FRP Series 4-Channel Compact Car Amplfier (Red)

• 400 watts x 4 channel @ 4 ohm
• 700 watts x 4 channel @ 2 ohm
• Bridged: 1200 watts x 2 channel @ 4 ohm
• Bridged: 1800 watts x 2 channel @ 2 ohm
• Total RMS Power: 4000 watts
• Class D 1 ohm Stable 4-Channel Amplifier

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NVX XKIT04

NVX XKIT04

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• 400 watts x 4 channel @ 4 ohm
• 700 watts x 4 channel @ 2 ohm
• Bridged: 1200 watts x 2 channel @ 4 ohm
• Bridged: 1800 watts x 2 channel @ 2 ohm
• Total RMS Power: 4000 watts
• Class D 1 ohm Stable 4-Channel Amplifier

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DS18 EXL-P4000X1D

4000W RMS Class D EXL Power Series Monoblock Car Amplifier with Bass Remote

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DS18 EXL-P4000X1D

4000W RMS Class D EXL Power Series Monoblock Car Amplifier with Bass Remote

• 1600 watts x 1 channel @ 4 ohm
• 2600 watts x 1 channel @ 2 ohm
• 4000 watts x 1 channel @ 1 ohm
• Total RMS Power: 4000 watts
• Class D 1 ohm Stable Monoblock Amplifier

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NVX XKIT02

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DS18 FRP-3.5K/RD

3500W RMS Class D FRP Series Monoblock Car Amplifier with Bass Remote (Red)

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DS18 FRP-3.5K/RD

3500W RMS Class D FRP Series Monoblock Car Amplifier with Bass Remote (Red)

• 1000 watts x 1 channel @ 4 ohm
• 2000 watts x 1 channel @ 2 ohm
• 3500 watts x 1 channel @ 1 ohm
• Total RMS Power: 3500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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DS18 Hydro NXL-X1500.1FR

3000W Peak (1500W RMS) Class D Hydro Series Monoblock Full Range Marine and Powersports Amplifier

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DS18 Hydro NXL-X1500.1FR

3000W Peak (1500W RMS) Class D Hydro Series Monoblock Full Range Marine and Powersports Amplifier

• 700 watts x 1 channel @ 4 ohm
• 1000 watts x 1 channel @ 2 ohm
• 1500 watts x 1 channel @ 1 ohm
• Total RMS Power: 1500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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• 700 watts x 1 channel @ 4 ohm
• 1000 watts x 1 channel @ 2 ohm
• 1500 watts x 1 channel @ 1 ohm
• Total RMS Power: 1500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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DS18 FRP-5K/RD

5000W RMS Class D FRP Series Monoblock Car Amplifier with Bass Remote (Red)

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DS18 FRP-5K/RD

5000W RMS Class D FRP Series Monoblock Car Amplifier with Bass Remote (Red)

• 1500 watts x 1 channel @ 4 ohm
• 2900 watts x 1 channel @ 2 ohm
• 5000 watts x 1 channel @ 1 ohm
• Total RMS Power: 5000 watts
• Class D 1 ohm Stable Monoblock Amplifier

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DS18 Hydro NXL-X1000.1D

2000W Peak Class D HYDRO Series Monoblock Marine and Powersports Subwoofer Amplifier

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DS18 Hydro NXL-X1000.1D

2000W Peak Class D HYDRO Series Monoblock Marine and Powersports Subwoofer Amplifier

• 350 watts x 1 channel @ 4 ohm
• 600 watts x 1 channel @ 2 ohm
• 100 watts x 1 channel @ 1 ohm
• Total RMS Power: 2000 watts
• IPX6 waterproof rating
• Class D 1 ohm Stable Monoblock Amplifier

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• 350 watts x 1 channel @ 4 ohm
• 600 watts x 1 channel @ 2 ohm
• 100 watts x 1 channel @ 1 ohm
• Total RMS Power: 2000 watts
• IPX6 waterproof rating
• Class D 1 ohm Stable Monoblock Amplifier

DS18 ION1200.1D

3600W Peak (1200W RMS) Class D ION Series Monoblock Full Range Car Amplifier with Bass Remote

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DS18 ION1200.1D

3600W Peak (1200W RMS) Class D ION Series Monoblock Full Range Car Amplifier with Bass Remote

• 400 watts x 1 channel @ 4 ohm
• 800 watts x 1 channel @ 2 ohm
• 1200 watts x 1 channel @ 1 ohm
• Total RMS Power: 1200 watts
• Class D 1 ohm Stable Monoblock Amplifier

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DS18 DBPX200

Digital Bass Processor with Signal Converter and Speaker Emulator

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DS18 DBPX200

Digital Bass Processor with Signal Converter and Speaker Emulator

• Digital Bass Restoration Processor
• Bass remote level control with LED clip
• Compact size for easy installation
• Surface mount component technology
• 2 channel preamp input / output
• Selectable Load Select: 20-ohm / 60-ohm / 20000-ohm
• Selectable Subsonic Filter: 35 Hz/50 Hz/80 Hz
• Selectable Output Voltage: 5V/7.5V/10V

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• Digital Bass Restoration Processor
• Bass remote level control with LED clip
• Compact size for easy installation
• Surface mount component technology
• 2 channel preamp input / output
• Selectable Load Select: 20-ohm / 60-ohm / 20000-ohm
• Selectable Subsonic Filter: 35 Hz/50 Hz/80 Hz
• Selectable Output Voltage: 5V/7.5V/10V

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    • Owner's manual
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    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
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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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