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2021 Audi A6

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Use our shopping filters to find the right 2/3/4-channel amp to power upgraded speakers properly.

Overview Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Amps for Adding Speakers for 2021 Audi A6

Some vehicles require an amp bypass module, a line-output converter like the NVX XLCA2 or AudioControl LC2i, or a DSP to integrate with your factory radio and avoid bass roll-off. Bass roll-off occurs when a factory radio's crossover is designed only for the original equipment speakers, resulting in a not complete signal being sent to your new aftermarket amp.

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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.
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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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Crunch DR-1325.4D with Belva 4 Gauge Amp Kit

1325W Peak Class D V-Drive Series 4-Channel Full Range Car Amplifier

DR13254D_BAK44 big
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Crunch DR-1325.4D with Belva 4 Gauge Amp Kit

1325W Peak Class D V-Drive Series 4-Channel Full Range Car Amplifier

• 165 watts x 4 channel @ 4 ohm
• 330 watts x 4 channel @ 2 ohm
• Bridged: 660 watts x 2 channel @ 4 ohm
• Total peak power output: 1325 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 165 watts x 4 channel @ 4 ohm
• 330 watts x 4 channel @ 2 ohm
• Bridged: 660 watts x 2 channel @ 4 ohm
• Total peak power output: 1325 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Hertz Venezia V5 with NVX 1/0 Gauge Amp Kit

1700W RMS Venezia Series Class-D 5-Channel Marine Amplifier

VENEZIAV5_XKIT06 big
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Hertz Venezia V5 with NVX 1/0 Gauge Amp Kit

1700W RMS Venezia Series Class-D 5-Channel Marine Amplifier

• 130 watts x 4 channel + 490 watts x 1 channel @ 4 ohm
• 220 watts x 4 channel + 820 watts x 1 channel @ 2 ohm
• Bridged: @ 4 ohm + 820 watts x 1 channel @ 2 ohm
• Total RMS Power: 1700 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 130 watts x 4 channel + 490 watts x 1 channel @ 4 ohm
• 220 watts x 4 channel + 820 watts x 1 channel @ 2 ohm
• Bridged: @ 4 ohm + 820 watts x 1 channel @ 2 ohm
• Total RMS Power: 1700 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

NVX - Worth the Envy - Direct to Consumer Car Audio

Infinity Reference 7005A (AMPRF7005AAM) + Free NVX Premium Amp Kit

Reference Series High Performance Class AB+D 5-Channel Amplifier + XKIT46

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Infinity Reference 7005A (AMPRF7005AAM) + Free NVX Premium Amp Kit

Reference Series High Performance Class AB+D 5-Channel Amplifier + XKIT46

• 5-Channel Amplifier
• Phase Switch on Sub Channel
• Full Board Protection
• Variable High and Low Pass Filter
• Class AB + D Technology

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• 5-Channel Amplifier
• Phase Switch on Sub Channel
• Full Board Protection
• Variable High and Low Pass Filter
• Class AB + D Technology

Wet Sounds STX Micro-4 with NVX 8 Gauge Amp Kit

600W Peak (280W RMS) Class-D Compact 4-Channel 1-Ohm Stable Powersports Amplifier

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Wet Sounds STX Micro-4 with NVX 8 Gauge Amp Kit

600W Peak (280W RMS) Class-D Compact 4-Channel 1-Ohm Stable Powersports Amplifier

• 80 Watts RMS x 4 @ 4 ohm
• 130 Watts RMS x 4 @ 2 ohm
• Bridged, 4 ohm: 280 watts x 2 chan.
• Total Peak Power: 600 Watts
• Frequency Response: 10 - 40kHz
• Dimensions: 4"W x 9.25"L x 1.5"H
• Includes Amplifier Wiring Kit

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• 80 Watts RMS x 4 @ 4 ohm
• 130 Watts RMS x 4 @ 2 ohm
• Bridged, 4 ohm: 280 watts x 2 chan.
• Total Peak Power: 600 Watts
• Frequency Response: 10 - 40kHz
• Dimensions: 4"W x 9.25"L x 1.5"H
• Includes Amplifier Wiring Kit

Cerwin Vega S9500.2D Amplifier + Free $100 Gift Card

Stroker Series 500W RMS 2-Channel Amplifier

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Cerwin Vega S9500.2D Amplifier + Free $100 Gift Card

Stroker Series 500W RMS 2-Channel Amplifier

• 4/2/1 ohm: 250 watts x 2 chan.
• Bridged, 4/2 ohm: 700 x 1 chan.
• Class-D 2-channel 4-Ohm Amplifier
• Frequency Response: 10Hz ~ 35KHz
• Crossover 35Hz – 350Hz

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• 4/2/1 ohm: 250 watts x 2 chan.
• Bridged, 4/2 ohm: 700 x 1 chan.
• Class-D 2-channel 4-Ohm Amplifier
• Frequency Response: 10Hz ~ 35KHz
• Crossover 35Hz – 350Hz

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Rockford Fosgate Punch P600X4 (Open Box, Great)

600W RMS Class AB Punch Series 4 Channel Car Amplifier

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Rockford Fosgate Punch P600X4 (Open Box, Great)

600W RMS Class AB Punch Series 4 Channel Car Amplifier

• 75 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 A/B 2 ohm Stable 4-Channel Amplifier

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• 75 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 A/B 2 ohm Stable 4-Channel Amplifier

Rockford Fosgate R2-300X4 (Open Box, Great)

300W RMS Class D Prime Series 4 Channel Car Amplifier

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Rockford Fosgate R2-300X4 (Open Box, Great)

300W RMS Class D Prime Series 4 Channel Car Amplifier

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

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

Cerwin-Vega S91100.5D + Free $150 Gift Card

Stroker Series 5-Channel Car Amplifier

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Cerwin-Vega S91100.5D + Free $150 Gift Card

Stroker Series 5-Channel Car Amplifier

• Cerwin Vega Stroker 5-channel Amplifier
• 150W x 4 chan. @ 4/2/1 Ω + 500W x 1 chan. @ 2/1 Ω
• 400W x 2 chan. @ 4/2 Ω + 500W x 1 @ 2 Ω
• Crossover: 35Hz – 350Hz
• Frequency Response: 10Hz – 35KHz
• Remote Bass Knob Included

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• Cerwin Vega Stroker 5-channel Amplifier
• 150W x 4 chan. @ 4/2/1 Ω + 500W x 1 chan. @ 2/1 Ω
• 400W x 2 chan. @ 4/2 Ω + 500W x 1 @ 2 Ω
• Crossover: 35Hz – 350Hz
• Frequency Response: 10Hz – 35KHz
• Remote Bass Knob Included

Cerwin Vega S9500.2D + Free Belva Amp Kit

Stroker Series 500W RMS 2-Channel Amplifier

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Cerwin Vega S9500.2D + Free Belva Amp Kit

Stroker Series 500W RMS 2-Channel Amplifier

• 4/2/1 ohm: 250 watts x 2 chan.
• Bridged, 4/2 ohm: 700 x 1 chan.
• Class-D 2-channel 4-Ohm Amplifier
• Frequency Response: 10Hz ~ 35KHz
• Crossover 35Hz – 350Hz

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• 4/2/1 ohm: 250 watts x 2 chan.
• Bridged, 4/2 ohm: 700 x 1 chan.
• Class-D 2-channel 4-Ohm Amplifier
• Frequency Response: 10Hz ~ 35KHz
• Crossover 35Hz – 350Hz

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American Bass GODFATHER 1000.2 with NVX 8 Gauge Amp Kit

1240W RMS Godfather Series Class-D 2-Channel Amplifier

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American Bass GODFATHER 1000.2 with NVX 8 Gauge Amp Kit

1240W RMS Godfather Series Class-D 2-Channel Amplifier

• 400 watts x 2 channel @ 4 ohm
• 620 watts x 2 channel @ 2 ohm
• Bridged: 1300 watts x 1 channel @ 4 ohm
• Total RMS Power: 1300 watts
• Class D 2 ohm Stable 2-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 400 watts x 2 channel @ 4 ohm
• 620 watts x 2 channel @ 2 ohm
• Bridged: 1300 watts x 1 channel @ 4 ohm
• Total RMS Power: 1300 watts
• Class D 2 ohm Stable 2-Channel Amplifier
• Includes Amplifier Wiring Kit

AudioControl ACM-2.300 + NVX Premium 8 Gauge Amp Wiring Kit

300W RMS ACM Series 2 ohm Stable 2-Channel Class-D Amplifier

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AudioControl ACM-2.300 + NVX Premium 8 Gauge Amp Wiring Kit

300W RMS ACM Series 2 ohm Stable 2-Channel Class-D Amplifier

• 75 Watts RMS x 2 @ 4 ohm
• 150 Watts RMS x 2 @ 2 ohm
• 300 Watts RMS x 1 @ 4 ohm
• Small Footprint for Flexible Mounting
• AccuBASS and GTO Signal Sense Built In
• Linkwitz-Riley Crossover
• Aluminum Heatsink
• Dimensions: 9.4" W x 3" L x 1.75" H

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-21% $359.00

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• 75 Watts RMS x 2 @ 4 ohm
• 150 Watts RMS x 2 @ 2 ohm
• 300 Watts RMS x 1 @ 4 ohm
• Small Footprint for Flexible Mounting
• AccuBASS and GTO Signal Sense Built In
• Linkwitz-Riley Crossover
• Aluminum Heatsink
• Dimensions: 9.4" W x 3" L x 1.75" H

MB Quart RA1-710.5 with NVX 4 Gauge Amp Kit

350W RMS 5-Channel Reference Series Full Range Class D Car Amplifier

RA17105_XKIT46 big
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MB Quart RA1-710.5 with NVX 4 Gauge Amp Kit

350W RMS 5-Channel Reference Series Full Range Class D Car Amplifier

• 50 watts x 4 channel + 150 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 250 watts x 1 channel @ 2 ohm
• Bridged:100 watts x 4 channel @ 4 ohm + 250 watts x 1 channel @ 2 ohm
• Total RMS Power: 350 watts
• Class D 1-Ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 50 watts x 4 channel + 150 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 250 watts x 1 channel @ 2 ohm
• Bridged:100 watts x 4 channel @ 4 ohm + 250 watts x 1 channel @ 2 ohm
• Total RMS Power: 350 watts
• Class D 1-Ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

Diamond Audio DES400.4D with NVX 8 Gauge Amp Kit

680W RMS DES Series 4-Channel Full Range Class D Amplifier

DES4004D_XKIT84 big
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Diamond Audio DES400.4D with NVX 8 Gauge Amp Kit

680W RMS DES Series 4-Channel Full Range Class D Amplifier

• 100 watts x 4 channel @ 4 ohm
• 170 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total RMS Power: 680 watts
• Latest High-Efficiency Full-Range Digital Topology
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 100 watts x 4 channel @ 4 ohm
• 170 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total RMS Power: 680 watts
• Latest High-Efficiency Full-Range Digital Topology
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Diamond Audio HX480.4 with NVX 8 Gauge Amp Kit

740W RMS HEX Series 4-Channel Class-D Amplifier

HX4804_XKIT84 big
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Diamond Audio HX480.4 with NVX 8 Gauge Amp Kit

740W RMS HEX Series 4-Channel Class-D Amplifier

• 120 watts x 4 channel @ 4 ohm
• 185 watts x 4 channel @ 2 ohm
• Bridged: 370 watts x 2 channel @ 4 ohm
• Total RMS Power: 480 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 120 watts x 4 channel @ 4 ohm
• 185 watts x 4 channel @ 2 ohm
• Bridged: 370 watts x 2 channel @ 4 ohm
• Total RMS Power: 480 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Infinity Kappa Perfect 5004A with NVX 8 Gauge Amp Kit

500W RMS Kappa Perfect Series Class-D 4-Channel Powersports Amplifier

KAPPA5004A_XKIT84 big
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Infinity Kappa Perfect 5004A with NVX 8 Gauge Amp Kit

500W RMS Kappa Perfect Series Class-D 4-Channel Powersports Amplifier

• 75 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 75 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

MB Quart FA2-900.5 with Amplifier Wiring Kit

900W RMS Formula Series Class-D 5-Channel Car Amplifier

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MB Quart FA2-900.5 with Amplifier Wiring Kit

900W RMS Formula Series Class-D 5-Channel Car Amplifier

• 50 watts x 4 channel + 200 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 250 watts x 1 channel @ 2 ohm
• Total RMS Power: 900 watts
• Class D 2 ohm Stable 5-Channel Amplifier • Includes Amplifier Wiring Kit

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• 50 watts x 4 channel + 200 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 250 watts x 1 channel @ 2 ohm
• Total RMS Power: 900 watts
• Class D 2 ohm Stable 5-Channel Amplifier • Includes Amplifier Wiring Kit

Autotek MM-3025.4D with Belva 4 Gauge Amp Kit

3000W Peak Class D Mean Machine Series 4-Channel Car Amplifier

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Autotek MM-3025.4D with Belva 4 Gauge Amp Kit

3000W Peak Class D Mean Machine Series 4-Channel Car Amplifier

• 375 watts x 4 channel @ 4 ohm
• 750 watts x 4 channel @ 2 ohm
• Bridged: 1500 watts x 2 channel @ 4 ohm
• Total Peak Power: 3000 watts
• Class D Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 375 watts x 4 channel @ 4 ohm
• 750 watts x 4 channel @ 2 ohm
• Bridged: 1500 watts x 2 channel @ 4 ohm
• Total Peak Power: 3000 watts
• Class D Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

DS18 G1000.4D with Belva 4 Gauge Amp Kit

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

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DS18 G1000.4D with Belva 4 Gauge Amp Kit

1000 Peak (600W RMS) Class D Gen-X Series 4 Channel 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-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 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-Channel Amplifier
• Includes Amplifier Wiring Kit

Hertz ML Power 5 with NVX 4 Gauge Amp Kit

950W RMS Mille Series Class-D 5-Channel Amplifier

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Hertz ML Power 5 with NVX 4 Gauge Amp Kit

950W RMS Mille Series Class-D 5-Channel Amplifier

• 70 watts x 4 channel + 380 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 550 watts x 1 channel @ 2 ohm
• Total RMS Power: 950 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 70 watts x 4 channel + 380 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 550 watts x 1 channel @ 2 ohm
• Total RMS Power: 950 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

Massive Audio EX44N with NVX 8 Gauge Amp Kit

800W RMS EDGE Series Class AB 4-Channel Amplifier

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Massive Audio EX44N with NVX 8 Gauge Amp Kit

800W RMS EDGE Series Class AB 4-Channel Amplifier

• 100 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 100 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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