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2011 Audi A5 Quattro

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Single, 1-channel monoblock sub amplifiers for when you add a sub

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

Amplifiers for Powering a Sub for 2011 Audi A5 Quattro

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.
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.
250–499.99 watts,
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 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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Kicker CXA400.1 (46CXA4001T)

400W RMS Class D CX-Series Monoblock Car Amplifier

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Kicker CXA400.1 (46CXA4001T)

400W RMS Class D CX-Series Monoblock Car Amplifier

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

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NVX XKIT82

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JVC KS-DR2001D

300W RMS Class D DRVN Series Monoblock Marine and Powersports Amplifier

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JVC KS-DR2001D

300W RMS Class D DRVN Series Monoblock Marine and Powersports Amplifier

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

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

Kicker 46CXA4001 with Amplifier Wiring Kit

400W RMS CX-Series Class-D Monoblock Amplifier

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Kicker 46CXA4001 with Amplifier Wiring Kit

400W RMS CX-Series Class-D Monoblock Amplifier


• 150 Watts RMS x 1 @ 4 ohm
• 300 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 600 Watts
• Preamp RCA outputs to daisy chain multiple amps
• Variable Low-Pass Crossover: 50 - 200Hz 12dB/octave
• Variable Bass Boost: 0 to +12 dB bass boost at 40 Hz
• Includes Amplifier Wiring Kit

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• 150 Watts RMS x 1 @ 4 ohm
• 300 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 600 Watts
• Preamp RCA outputs to daisy chain multiple amps
• Variable Low-Pass Crossover: 50 - 200Hz 12dB/octave
• Variable Bass Boost: 0 to +12 dB bass boost at 40 Hz
• Includes Amplifier Wiring Kit

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Belva BB200ABv2

500W Peak Class A/B Monoblock Amplifier

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Belva BB200ABv2

500W Peak Class A/B Monoblock Amplifier

• Class A/B Monoblock Amplifier
• Adjustable Gain Controls
• Low-Pass Filter: 40-300Hz
• Bass Boost: +0-12DB
• One pair of preamp outputs
• Remote bass knob included

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JL Audio JD250/1

250W RMS Class D JD Series Monoblock Car Amplifier

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JL Audio JD250/1

250W RMS Class D JD Series Monoblock Car Amplifier

• 150 watts x 1 channel @ 4 ohm
• 250 watts x 1 channel @ 2 ohm
• Total RMS Power: 250 watts
• Class D 2 ohm Stable Monoblock Amplifier

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JL Audio XDM300/1

300W RMS Class D XDM Series Monoblock Car and Marine Amplifier

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JL Audio XDM300/1

300W RMS Class D XDM Series Monoblock Car and Marine Amplifier

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

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Rockford Fosgate Punch P300X1

300W RMS Class AB Punch Series Monoblock Car Amplifier

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Rockford Fosgate Punch P300X1

300W RMS Class AB Punch Series Monoblock Car Amplifier

• 200 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• Class A/B 2 ohm Stable Monoblock Amplifier

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Rockford Fosgate Prime R2 R2-250X1

250W RMS Class D Prime Series Monoblock Car Amplifier

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Rockford Fosgate Prime R2 R2-250X1

250W RMS Class D Prime Series Monoblock Car Amplifier

• 150 watts x 1 channel @ 4 ohm
• 250 watts x 1 channel @ 2 ohm
• Total RMS Power: 250 watts
• Class D 2 ohm Stable Monoblock Amplifier

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Kenwood KAC-M5001

600W Peak (300W RMS) Class D M Series Monoblock Marine and Powersports Amplifier with Bass Remote

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Kenwood KAC-M5001

600W Peak (300W RMS) Class D M Series Monoblock Marine and Powersports Amplifier with Bass Remote

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

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List price $300.00
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• 200 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable Monoblock Amplifier

JL Audio MX300/1

300W RMS Class D MX Series Monoblock Marine and Powersports Amplifier

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JL Audio MX300/1

300W RMS Class D MX Series Monoblock Marine and Powersports Amplifier

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

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$379.99

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Jensen JA1B

290W RMS JA Series Class-D Compact Monoblock Car Amplifier with DSP

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Jensen JA1B

290W RMS JA Series Class-D Compact Monoblock Car Amplifier with DSP

• 290 watts x 1 channel @ 4 ohm
• 470 watts x 1 channel @ 2 ohm
• 595 watts x 1 channel @ 1 ohm
• Total RMS Power: 290 watts
• CEA-2006 Compliant
• Class D 2 ohm Stable Monoblock Amplifier

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Alpine KTA-30MW Tough Power Pack

600W Peak (300W RMS) Class D Power Pack Series Monoblock Marine and Powersports Amplifier

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Alpine KTA-30MW Tough Power Pack

600W Peak (300W RMS) Class D Power Pack Series Monoblock Marine and Powersports Amplifier

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

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List price $600.00
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Sound Extreme by ECOXGEAR SEI-AMPEV30011

300W RMS Class D EV Series Monoblock Marine Amplifier

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Sound Extreme by ECOXGEAR SEI-AMPEV30011

300W RMS Class D EV Series Monoblock Marine Amplifier

• 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable Monoblock Amplifier
• Operating Voltage: 43V to 82V
• Marine-grade sealed die-cast aluminum chassis

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• 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable Monoblock Amplifier
• Operating Voltage: 43V to 82V
• Marine-grade sealed die-cast aluminum chassis

JL Audio AP300/1

300W RMS Class D AP Series Monoblock Marine and Powersports Amplifier with Built-in LCD Display

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JL Audio AP300/1

300W RMS Class D AP Series Monoblock Marine and Powersports Amplifier with Built-in LCD Display

• 200 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Built-in LCD display for manual control
• Can be paired with a Fusion stereo with built-in DSP
• Easy Tune feature via Fusion Audio app
• Control Fusion Audio app via smartphone

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List price $599.99
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Hertz DPower 1

600W Peak (300W RMS) Class D DPOWER Series Monoblock Car Amplifier

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Hertz DPower 1

600W Peak (300W RMS) Class D DPOWER Series Monoblock Car Amplifier

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

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Kicker PXA300.1 (48PXA3001)

500W Peak (300W RMS) Class D PXA Series Monoblock Marine and Powersports Amplifier

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Kicker PXA300.1 (48PXA3001)

500W Peak (300W RMS) Class D PXA Series Monoblock Marine and Powersports Amplifier

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

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List price $329.99
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Sound Extreme by ECOXGEAR SEI-AMP30011

300W RMS Class D Monoblock Marine Amplifier

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Sound Extreme by ECOXGEAR SEI-AMP30011

300W RMS Class D Monoblock Marine Amplifier

• 180 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable Monoblock Amplifier
• Marine-grade sealed die-cast aluminum chassis

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List price $299.99
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• 180 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable Monoblock Amplifier
• Marine-grade sealed die-cast aluminum chassis

Limited time!

Memphis SRX300.1V

250W RMS Class AB Street Reference Series Monoblock Car Amplifier with Bass Remote

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Memphis SRX300.1V

250W RMS Class AB Street Reference Series Monoblock Car Amplifier with Bass Remote

• 150 watts x 1 channel @ 4 ohm
• 250 watts x 1 channel @ 2 ohm
• Total RMS Power: 250 watts
• Class A/B 2 ohm Stable Monoblock Amplifier

Save 30% off an NVX XKIT82 Amp Kit at Checkout!
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List price $179.95
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MB Quart NA4-400.1

400W RMS Class D Nautic Series Monoblock Marine and Powersports Amplifier with Bass Remote

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MB Quart NA4-400.1

400W RMS Class D Nautic Series Monoblock Marine and Powersports Amplifier with Bass Remote

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

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List price $214.99
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• 200 watts x 1 channel @ 4 ohm
• 400 watts x 1 channel @ 2 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable Monoblock Amplifier

Boss Elite BE400.1D

400W RMS Class D Elite Series Monoblock Car Amplifier with Bass Remote

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Boss Elite BE400.1D

400W RMS Class D Elite Series Monoblock Car Amplifier with Bass Remote

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

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List price $227.99
-17% $189.99

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    FAQ for Monoblock Sub Amplifiers in 2011 A5 Quattro

    Q: Can I upgrade or change the Monoblock Sub Amplifiers in 2011 Audi A5 Quattro?

    A: Yes this page includes all the best Monoblock Sub Amplifiers that work in your A5 Quattro.

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    Why Use a Vehicle Fit Guide?
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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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