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2021 Audi S5

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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 2021 Audi S5

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.
Power Series (17)
Punch Series (16)
Prime Series (14)
FRP Series (12)
Apocalypse Atom Pro Series (9)
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CVP Series (7)
SALT Series (7)
Brutus BRL Series (6)
Competition Series (6)
CX Series (6)
Godfather Series (6)
Hooligan Series (6)
JD Series (6)
RD Series (6)
Reference Series (6)
SIA Series (6)
SMD Series (6)
Stroker Pro Series (6)
V Series (6)
XDM Series (6)
Club Series (5)
Epic Series (5)
HD Series (5)
SAE Series (5)
Stroker RPM Series (5)
XQ Series (5)
Brutus BG Series (4)
EXL-P Series (4)
LX Series (4)
MA Series (4)
Machete Series (4)
Power Pack Series (4)
RS Series (4)
SXE Series (4)
V-Drive Series (4)
VXi Series (4)
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XED Series (4)
CRA Series (3)
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iON Series (3)
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SAM Series (3)
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ZR Series (3)
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PowerHouse Shredder Series (2)
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R-Series (2)
S Series (2)
SFB Series (2)
Stealth STX Series (2)
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VEGA Series (2)
VFL Comp Series (2)
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VFL Stealth Series (2)
Alpha Series (1)
AP Series (1)
Colossus Classic Series (1)
COLOSSUS Series (1)
Compact Mean Machine Series (1)
CVPM Series (1)
Discus Series (1)
DPower Series (1)
DRVN Series (1)
DXM Series (1)
EV Series (1)
Excelon Motorsports Series (1)
FX Series (1)
Gen-X (1)
GM Digital Series (1)
HCCA Series (1)
HCP Series (1)
HED Series (1)
HMP Series (1)
HRPM Series (1)
HTM Series (1)
HXM Series (1)
Key Series (1)
KM Series (1)
KPX Series (1)
KXM Series (1)
LC Series (1)
M Series (1)
M5 Series (1)
Marine Series (1)
MDX Series (1)
Mean Machine Series (1)
MHD Series (1)
Micro8U Series (1)
MicroV2 Series (1)
MINI BANG Series (1)
MOJO Pro Series (1)
MotorSport Series (1)
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N Series (1)
Performance Series (1)
Picasso-Nano Series (1)
Primo Series (1)
Primus Series (1)
PS Series (1)
Q-Series (1)
Reserve Series (1)
RTX Series (1)
SAEv4 Series (1)
Sinister Series (1)
SPL Show Series (1)
Stage GT Series (1)
Status Series (1)
Stealth Bomber Series (1)
Street Reference (1)
Venezia Series (1)
Warhorse Series (1)
X Series (1)
XFL Series (1)
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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Cerwin Vega B51 with NVX 4 Gauge Amp Kit

1000W Peak (500W RMS) Stealth Bomber Series Class-D Monoblock Amplifier with Bass Remote

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Cerwin Vega B51 with NVX 4 Gauge Amp Kit

1000W Peak (500W RMS) Stealth Bomber Series Class-D Monoblock Amplifier with Bass Remote

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

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

Cerwin Vega HRPM350.1D with NVX 8 Gauge Amp Kit

350W RMS HRPM Series Class-D Monoblock Marine Amplifier with Bass Remote

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Cerwin Vega HRPM350.1D with NVX 8 Gauge Amp Kit

350W RMS HRPM Series Class-D Monoblock Marine Amplifier with Bass Remote

• 120 watts x 1 channel @ 4 ohm
• 220 watts x 1 channel @ 2 ohm
• 350 watts x 1 channel @ 1 ohm
• Total RMS Power: 350 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 120 watts x 1 channel @ 4 ohm
• 220 watts x 1 channel @ 2 ohm
• 350 watts x 1 channel @ 1 ohm
• Total RMS Power: 350 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

DC Audio 3.5k with NVX 1/0 Gauge Amp Kit

3500W Competition Series Monoblock Class D Amplifier

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DC Audio 3.5k with NVX 1/0 Gauge Amp Kit

3500W Competition Series Monoblock Class D Amplifier

• RMS Power: 750W x 1 @ 4 ohm, 1800W x 1 @ 2 ohm, 3500W x 1 @ 1 ohm
• Strappable for Up to 7,000W of Power
• Variable Low Pass Filter
• Dimensions: 9.38" W x 21.26" L x 2.35" H
• Includes Amplifier Wiring Kit

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• RMS Power: 750W x 1 @ 4 ohm, 1800W x 1 @ 2 ohm, 3500W x 1 @ 1 ohm
• Strappable for Up to 7,000W of Power
• Variable Low Pass Filter
• Dimensions: 9.38" W x 21.26" L x 2.35" H
• Includes Amplifier Wiring Kit

Diamond Audio HX1600.1D with NVX 1/0 Gauge Amp Kit

1600W RMS HEX Series Class-D Monoblock Amplifier

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Diamond Audio HX1600.1D with NVX 1/0 Gauge Amp Kit

1600W RMS HEX Series Class-D Monoblock Amplifier

• 700 watts x 1 channel @ 4 ohm
• 1050 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
• Includes Amplifier Wiring Kit

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• 700 watts x 1 channel @ 4 ohm
• 1050 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
• Includes Amplifier Wiring Kit

Diamond Audio HXM1200.1D with NVX 4 Gauge Amp Kit

1200W HXM Series Class-D Monoblock Full-Range Marine Amplifier

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Diamond Audio HXM1200.1D with NVX 4 Gauge Amp Kit

1200W HXM Series Class-D Monoblock Full-Range Marine Amplifier

• 550 watts x 1 channel @ 4 ohm
• 850 watts x 1 channel @ 2 ohm
• 1200 watts x 1 channel @ 1 ohm
• Total RMS Power: 1200 watts
• Balanced differential inputs for superior noise rejection
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 550 watts x 1 channel @ 4 ohm
• 850 watts x 1 channel @ 2 ohm
• 1200 watts x 1 channel @ 1 ohm
• Total RMS Power: 1200 watts
• Balanced differential inputs for superior noise rejection
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Diamond Audio DXM1200.1D with NVX 4 Gauge Amp Kit

1200W RMS DXM Series Class-D Monoblock Amplifier

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Diamond Audio DXM1200.1D with NVX 4 Gauge Amp Kit

1200W RMS DXM Series Class-D Monoblock Amplifier

• 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
• Includes Amplifier Wiring Kit

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$796.98

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• 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
• Includes Amplifier Wiring Kit

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DS18 H-KO8 with NVX 1/0 Gauge Amp Kit

8000W RMS Class D Hooligan Series Monoblock Car Amplifier with Bass Remote

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DS18 H-KO8 with NVX 1/0 Gauge Amp Kit

8000W RMS Class D Hooligan Series Monoblock Car Amplifier with Bass Remote

• 2500 watts x 1 channel @ 4 ohm
• 4800 watts x 1 channel @ 2 ohm
• 8000 watts x 1 channel @ 1 ohm
• Total RMS Power: 8000 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 2500 watts x 1 channel @ 4 ohm
• 4800 watts x 1 channel @ 2 ohm
• 8000 watts x 1 channel @ 1 ohm
• Total RMS Power: 8000 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Hertz HMD1 with NVX 8 Gauge Amp Kit

1000W RMS Monoblock 1-Ohm Class D Marine Amplifier

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Hertz HMD1 with NVX 8 Gauge Amp Kit

1000W RMS Monoblock 1-Ohm Class D Marine Amplifier

• 500 watts x 1 channel @ 4 ohm
• 800 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Total RMS Power: 1000 watts
• Corrosion Resistant
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 500 watts x 1 channel @ 4 ohm
• 800 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Total RMS Power: 1000 watts
• Corrosion Resistant
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Hertz HMP 1D with NVX 8 Gauge Amp Kit

300W RMS HMP Series Monoblock Class D 2-Ohm Marine/Powersports/Motorcycle Amplifier

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Hertz HMP 1D with NVX 8 Gauge Amp Kit

300W RMS HMP Series Monoblock Class D 2-Ohm Marine/Powersports/Motorcycle Amplifier

• 180 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• Water Jet Tested
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 180 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• Water Jet Tested
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Lowest price in 30 days

DS18 SMD-5000.1D with NVX 1/0 Gauge Amp Kit

5000W RMS Class D SMD Series Monoblock Car Amplifier with Bass Remote

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DS18 SMD-5000.1D with NVX 1/0 Gauge Amp Kit

5000W RMS Class D SMD Series Monoblock Car Amplifier with Bass Remote

• 2000 watts x 1 channel @ 4 ohm
• 3500 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
• Includes Amplifier Wiring Kit

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• 2000 watts x 1 channel @ 4 ohm
• 3500 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
• Includes Amplifier Wiring Kit

JL Audio JD250/1 (Open Box, Great)

250W RMS Class D JD Series Monoblock Car Amplifier

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JL Audio JD250/1 (Open Box, Great)

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 HD750/1 (Open Box, Great)

750W RMS Class D HD Series Monoblock Car Amplifier

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JL Audio HD750/1 (Open Box, Great)

750W RMS Class D HD Series Monoblock Car Amplifier

• 750 watts x 1 channel @ 4 ohm
• 750 watts x 1 channel @ 2 ohm
• Total RMS Power: 750 watts
• Class D 1.5 ohm Stable Monoblock Amplifier

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Rockford Fosgate Power T750X1bd - Open Box, Great

750W Power Series Ultra Compact Class-BD Monoblock Amplifier

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Rockford Fosgate Power T750X1bd - Open Box, Great

750W Power Series Ultra Compact Class-BD Monoblock Amplifier

• 500 Watts RMS x 1 @ 4 ohm
• 750 Watts RMS x 1 @ 2 ohm
• 750 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 1500 Watts
• CEA-2006 Compliant
• C.L.E.A.N. input/output clip detection and indicator LEDs
• Dual extruded heat sinks
• C.L.E.A.N. input/output clip detection and indicator LEDs
• Real time thermal sensing with Rollback technology
• Dimensions: 4.3"W x 8.3"L x 1.6"H

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Rockford Fosgate Punch P1000X1bd (Open Box, Great)

1000W RMS Class BD Punch Series Monoblock Car Amplifier

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Rockford Fosgate Punch P1000X1bd (Open Box, Great)

1000W RMS Class BD Punch Series Monoblock Car Amplifier

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

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Rockford Fosgate Punch P300X1 (Open Box, Great)

300W RMS Class AB Punch Series Monoblock Car Amplifier

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Rockford Fosgate Punch P300X1 (Open Box, Great)

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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JL Audio VX1000/1i (Open Box, Great)

1000W RMS Class D VXi Series Monoblock Car Amplifier

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JL Audio VX1000/1i (Open Box, Great)

1000W RMS Class D VXi Series Monoblock Car Amplifier

• 600 watts x 1 channel @ 4 ohm
• 800 watts x 1 channel @ 3 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 $1449.99
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JL Audio XDM300/1 (Open Box, Great)

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

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JL Audio XDM300/1 (Open Box, Great)

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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DS18 SMD-8500.1D (Open Box, Great)

8500W RMS Class D SMD Series Monoblock Car Amplifier with Bass Remote, VM-1 Voltmeter, and Digital LED Lights

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DS18 SMD-8500.1D (Open Box, Great)

8500W RMS Class D SMD Series Monoblock Car Amplifier with Bass Remote, VM-1 Voltmeter, and Digital LED Lights

• 3300 watts x 1 channel @ 4 ohm
• 5700 watts x 1 channel @ 2 ohm
• 8500 watts x 1 channel @ 1 ohm
• Total RMS Power: 8500 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Wired bass level remote control included
• IR Remote Control for LED patterns and colors included

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List price $1699.95
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Rockford Fosgate T500-1bdCP - Open Box, Great

500W RMS Constant Power Series Class BD Monoblock Amplifier

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Rockford Fosgate T500-1bdCP - Open Box, Great

500W RMS Constant Power Series Class BD Monoblock Amplifier

• RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm, 500W x 1 @ 1 ohm
• Dynamic Power Output: 690W
• CEA-2006 Compliant
• Variable Bass Boost: 0 to +18 dB at 45 Hz
• Ultra Efficient Class bD Circuitry
• Dimensions: 11-7/16"L x 8-3/16"W x 2-3/16"H

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Rockford Fosgate R2-250X1 (Open Box, Great)

250W RMS Class D Prime Series Monoblock Car Amplifier

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Rockford Fosgate R2-250X1 (Open Box, Great)

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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Universal Icon Universal – fits most vehicles.

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