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2008 Audi R8

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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 2008 Audi R8

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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NVX XQA12001

1200W RMS Class D XQ-Series Monoblock Car Amplifier with X-Boost

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NVX XQA12001

1200W RMS Class D XQ-Series Monoblock Car Amplifier with X-Boost

• 500 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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Hifonics BG-3000.1

3000W RMS Class D Brutus BG Series Monoblock Car Amplifier with Bass Remote

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Hifonics BG-3000.1

3000W RMS Class D Brutus BG Series Monoblock Car Amplifier with Bass Remote

• 1400 watts x 1 channel @ 4 ohm
• 2000 watts x 1 channel @ 2 ohm
• 3000 watts x 1 channel @ 1 ohm
• Total RMS Power: 3000 watts
• Class D 1 ohm Stable Monoblock Amplifier

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Alpine S2-A120M

1200W Class D RMS S-Series Monoblock Car Amplifier

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Alpine S2-A120M

1200W Class D RMS S-Series Monoblock Car Amplifier

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

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Sundown Audio SIA-5000D

5000W RMS Class D SIA Series Monoblock Car Amplifier

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Sundown Audio SIA-5000D

5000W RMS Class D SIA Series Monoblock Car Amplifier

• 3400 watts x 1 channel @ 4 ohm
• 4950 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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Belva BXD4K

4000W Peak BX-Series Class-D Monoblock Car Audio Amplifier with Bass Remote

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Belva BXD4K

4000W Peak BX-Series Class-D Monoblock Car Audio Amplifier with Bass Remote

• 1000 watts x 1 channel @ 4 ohm
• 2000 watts x 1 channel @ 2 ohm
• 4000 watts x 1 channel @ 1 ohm
• Total Peak Power: 4000 watts
• Class D 1 ohm Stable Monoblock

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NVX XQA25001

2500W RMS Class D XQ-Series Monoblock Car Amplifier with X-Boost

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NVX XQA25001

2500W RMS Class D XQ-Series Monoblock Car Amplifier with X-Boost

• 1000 watts x 1 channel @ 4 ohm
• 1500 watts x 1 channel @ 2 ohm
• 2500 watts x 1 channel @ 1 ohm
• Total RMS Power: 2500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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Rockford Fosgate Power T2500-1bdCP

2500W RMS Class BD Power Series Monoblock Car Amplifier

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Rockford Fosgate Power T2500-1bdCP

2500W RMS Class BD Power Series Monoblock Car Amplifier

• 1500 watts x 1 channel @ 4 ohm
• 2500 watts x 1 channel @ 2 ohm
• Total RMS Power: 2500 watts
• Class BD 1 ohm Stable Monoblock Amplifier

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NVX XKIT02

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Alpine R2-A150M

1500W RMS Class D R-Series Monoblock Car Amplifier

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Alpine R2-A150M

1500W RMS Class D R-Series Monoblock Car Amplifier

• 700 watts x 1 channel @ 4 ohm
• 1200 watts x 1 channel @ 2 ohm
• Total RMS Power: 1500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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Rockford Fosgate Prime R2 R2-750X1

750W RMS Class D Prime Series Monoblock Car Amplifier

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Rockford Fosgate Prime R2 R2-750X1

750W RMS Class D Prime Series Monoblock Car Amplifier

• 250 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 750 watts
• Class D 1 ohm Stable Monoblock Amplifier

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AudioControl EPIC2000

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

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AudioControl EPIC2000

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

• 800 watts x 1 channel @ 4 ohm
• 1400 watts x 1 channel @ 2 ohm
• 2000 watts x 1 channel @ 1 ohm
• Bridged (Strapped): 4000 watts x 1 channel @ 2 ohm
• Total RMS Power: 2000 watts
• Class D 1 ohm Stable Monoblock Amplifier

Save 30% off an NVX XKIT02 Amp Kit at Checkout!
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Deaf Bonce Apocalypse ATOM 1600.1 PRO

1600W RMS Class D Apocalypse Atom Pro Series Monoblock Car Amplifier with Bass Remote

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Deaf Bonce Apocalypse ATOM 1600.1 PRO

1600W RMS Class D Apocalypse Atom Pro Series Monoblock Car Amplifier with Bass Remote

• 550 watts x 1 channel @ 4 ohm
• 1010 watts x 1 channel @ 2 ohm
• 1600 watts x 1 channel @ 1 ohm
• Total RMS Power: 1600 watts
• Class D 1 ohm Stable Monoblock Amplifier

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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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Kicker LX3000.1 (51LX30001)

3800W Peak (3000W RMS) Class D LX Series Monoblock Car Amplifier (with RGB LED-Lit Bass Remote)

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Kicker LX3000.1 (51LX30001)

3800W Peak (3000W RMS) Class D LX Series Monoblock Car Amplifier (with RGB LED-Lit Bass Remote)

• 1100 watts x 1 channel @ 4 ohm
• 2000 watts x 1 channel @ 2 ohm
• 3000 watts x 1 channel @ 1 ohm
• Total RMS Power: 3000 watts
• Class D 1 ohm Stable Monoblock Amplifier

Save 30% off an NVX XKIT02 Amp Kit at Checkout!
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NVX XKIT02

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Belva BXD3K

3000W Peak BX-Series Class-D Monoblock Car Audio Amplifier with Bass Remote

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Belva BXD3K

3000W Peak BX-Series Class-D Monoblock Car Audio Amplifier with Bass Remote

• 750 watts x 1 channel @ 4 ohm
• 1500 watts x 1 channel @ 2 ohm
• 3000 watts x 1 channel @ 1 ohm
• Total Peak Power: 3000 watts
• Class D 1 ohm Stable Monoblock

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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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NVX XKIT82

NVX XKIT82

$79.99

$55.99

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Kenwood KAC-9106D

2000W Peak (1000W RMS) Class D Performance Series Monoblock Car Amplifier

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Kenwood KAC-9106D

2000W Peak (1000W RMS) Class D Performance Series Monoblock Car Amplifier

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

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List price $400.00
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Kicker KXMA1500.1 (51KXMA15001)

2500W Peak (1500W RMS) Class D KXM Series Monoblock Marine Amplifier with Bass Remote

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Kicker KXMA1500.1 (51KXMA15001)

2500W Peak (1500W RMS) Class D KXM Series Monoblock Marine Amplifier with Bass Remote

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

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List price $799.99
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-30% $559.96

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

Sundown Audio SIA-1250D (A-SIA1250)

1250W RMS Class D SIA Series Monoblock Car Amplifier

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Sundown Audio SIA-1250D (A-SIA1250)

1250W RMS Class D SIA Series Monoblock Car Amplifier

• 800 watts x 1 channel @ 4 ohm
• 1250 watts x 1 channel @ 2 ohm
• 1250 watts x 1 channel @ 1 ohm
• Total RMS Power: 1250 watts
• Class D 1 ohm Stable Monoblock Amplifier

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Save 30% on an NVX XKIT42 Amp Kit with Purchase! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT42 Amp Kit! No code needed — discount applies automatically at checkout.
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Deaf Bonce Apocalypse ATOM 3.5K PRO

3500W RMS Class D Apocalypse Atom Pro Series Monoblock Car Amplifier with Bass Remote

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Deaf Bonce Apocalypse ATOM 3.5K PRO

3500W RMS Class D Apocalypse Atom Pro Series Monoblock Car Amplifier with Bass Remote

• 1210 watts x 1 channel @ 4 ohm
• 2200 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

Save 30% off an NVX XKIT02 Amp Kit at Checkout!
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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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    FAQ for Monoblock Sub Amplifiers in 2008 R8

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