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2013 BMW 550i

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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 2013 BMW 550i

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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JL Audio VX400/4i (Open Box, Great)

400W RMS Class D VXi Series 4 Channel Car Amplifier

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JL Audio VX400/4i (Open Box, Great)

400W RMS Class D VXi Series 4 Channel Car Amplifier

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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-21% $982.13

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• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Limited time!

Belva BXA5002

500W Peak BX-Series Class A/B 2-Channel Car Audio Amplifier with Bass Remote

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Belva BXA5002

500W Peak BX-Series Class A/B 2-Channel Car Audio Amplifier with Bass Remote

• 125 watts x 2 channel @ 4 ohm
• 250 watts x 2 channel @ 2 ohm
• Bridged: 500 watts x 1 channel @ 4 ohm
• Total Peak Power: 500 watts
• Class A/B 2 ohm Stable 2-Channel-Channel

Save 30% off an NVX XKIT82 Amp Kit at Checkout!
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NVX XKIT82

NVX XKIT82

$79.99

$55.99

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• 125 watts x 2 channel @ 4 ohm
• 250 watts x 2 channel @ 2 ohm
• Bridged: 500 watts x 1 channel @ 4 ohm
• Total Peak Power: 500 watts
• Class A/B 2 ohm Stable 2-Channel-Channel

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NVX VAD22008 v2 (VAD22008v2)

2200W RMS Class D V-Series 8-Channel Car, Marine and Powersports Amplifier

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NVX VAD22008 v2 (VAD22008v2)

2200W RMS Class D V-Series 8-Channel Car, Marine and Powersports Amplifier

• 150 watts x 6 channel + 250 watts x 2 channels @ 4 ohm
• 225 watts x 6 channel + 400 watts x 2 channels @ 2 ohm
• Bridged: 450 watts x 3 channel + 850 watts x 1 channel @ 4 ohm
• Total RMS Power: 2200 watts
• Class D 2 ohm Stable 8-Channel Amplifier

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• 150 watts x 6 channel + 250 watts x 2 channels @ 4 ohm
• 225 watts x 6 channel + 400 watts x 2 channels @ 2 ohm
• Bridged: 450 watts x 3 channel + 850 watts x 1 channel @ 4 ohm
• Total RMS Power: 2200 watts
• Class D 2 ohm Stable 8-Channel Amplifier

Deaf Bonce Apocalypse ATOM-500.2 PRO

500W RMS Class D Apocalypse Atom Pro Series 2-Channel Car Amplifier

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Deaf Bonce Apocalypse ATOM-500.2 PRO

500W RMS Class D Apocalypse Atom Pro Series 2-Channel Car Amplifier

• 231 watts x 2 channel @ 4 ohm
• 390 watts x 2 channel @ 2 ohm
• 500 watts x 2 channel @ 1 ohm
• Bridged: 780 watts x 1 channel @ 4 ohm
• 1000 watts @ 2 ohm
• Total RMS Power: 500 watts
• Class D 1 ohm Stable 2-Channel-Channel Amplifier

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$189.90
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• 231 watts x 2 channel @ 4 ohm
• 390 watts x 2 channel @ 2 ohm
• 500 watts x 2 channel @ 1 ohm
• Bridged: 780 watts x 1 channel @ 4 ohm
• 1000 watts @ 2 ohm
• Total RMS Power: 500 watts
• Class D 1 ohm Stable 2-Channel-Channel Amplifier

NVX VADM4 Version 2 (VADM4v2) (Open Box, Great)

500W RMS V-Series Micro Full-Range Class D 4-Channel Amplifier Car/Marine/Powersports Amplifier

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NVX VADM4 Version 2 (VADM4v2) (Open Box, Great)

500W RMS V-Series Micro Full-Range Class D 4-Channel Amplifier Car/Marine/Powersports Amplifier

• 80 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-Channel Amplifier

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• 80 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-Channel Amplifier

NVX VAD8402 v2 (VAD8402v2)

840W RMS Class D VAD Series 2-Channel Full-Range Car/Marine/Powersports Amplifier

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NVX VAD8402 v2 (VAD8402v2)

840W RMS Class D VAD Series 2-Channel Full-Range Car/Marine/Powersports Amplifier

• 300 watts x 2 channel @ 4 ohm
• 420 watts x 2 channel @ 2 ohm
• Bridged: 840 watts x 1 channel @ 4 ohm
• Total RMS Power: 840 watts
• Class D 2 ohm Stable 2-Channel Amplifier

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$195.49 with coupon | Price details
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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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• 300 watts x 2 channel @ 4 ohm
• 420 watts x 2 channel @ 2 ohm
• Bridged: 840 watts x 1 channel @ 4 ohm
• Total RMS Power: 840 watts
• Class D 2 ohm Stable 2-Channel Amplifier

Rockford Fosgate Power T400-4

400W RMS Class AB Power Series 4 Channel Car Amplifier

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Rockford Fosgate Power T400-4

400W RMS Class AB Power Series 4 Channel Car Amplifier

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

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$439.99
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Save 30% off an NVX XKIT84 Amp Kit at Checkout! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT84 Amp Kit! No code needed — discount applies automatically at checkout.
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• 60 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

Limited time!

Rockford Fosgate Punch PBR400X4D

400W RMS Class D Punch Series 4 Channel Car Amplifier

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Rockford Fosgate Punch PBR400X4D

400W RMS Class D Punch Series 4 Channel Car Amplifier

• 50 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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List price $309.99
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• 50 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

JL Audio RD800/6

800W RMS Class D RD Series 6-Channel Car Amplifier

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JL Audio RD800/6

800W RMS Class D RD Series 6-Channel Car Amplifier

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 1 channel @ 4 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 6-Channel Amplifier

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List price $779.98
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Save 30% off an NVX XKIT46 Amp Kit at Checkout! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT46 Amp Kit! No code needed — discount applies automatically at checkout.
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• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 1 channel @ 4 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 6-Channel Amplifier

Limited time!

DS18 G3600.4D

3600W Peak (1680W RMS) Class D Gen-X Series 4-Channel Car Amplifier

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DS18 G3600.4D

3600W Peak (1680W RMS) Class D Gen-X Series 4-Channel Car Amplifier

• 300 watts x 4 channel @ 4 ohm
• 420 watts x 4 channel @ 2 ohm
• Bridged: 740 watts x 4 channel @ 4 ohm
• Total RMS Power: 1680 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Save 30% off an NVX XKIT44 Amp Kit at Checkout!
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$347.95
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NVX XKIT44

NVX XKIT44

$119.99

$83.99

$36 Savings!

Add to cart

• 300 watts x 4 channel @ 4 ohm
• 420 watts x 4 channel @ 2 ohm
• Bridged: 740 watts x 4 channel @ 4 ohm
• Total RMS Power: 1680 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Limited time!

DS18 FRP-2.4K4/RD

2400W RMS Class D FRP Series 4-Channel Car Amplifier (Red)

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DS18 FRP-2.4K4/RD

2400W RMS Class D FRP Series 4-Channel Car Amplifier (Red)

• 250 watts x 4 channel @ 4 ohm
• 400 watts x 4 channel @ 2 ohm
• 600 watts x 4 channel @ 1 ohm
• Bridged: 750 watts x 2 channel @ 4 ohm
• Bridged: 1000 watts x 2 channel @ 2 ohm
• Total RMS Power: 2400 watts
• Class D 1 ohm Stable 4-Channel Amplifier

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$349.95
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NVX XKIT44

NVX XKIT44

$119.99

$83.99

$36 Savings!

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• 250 watts x 4 channel @ 4 ohm
• 400 watts x 4 channel @ 2 ohm
• 600 watts x 4 channel @ 1 ohm
• Bridged: 750 watts x 2 channel @ 4 ohm
• Bridged: 1000 watts x 2 channel @ 2 ohm
• Total RMS Power: 2400 watts
• Class D 1 ohm Stable 4-Channel Amplifier

JBL Marine A758 (MA758AM)

1000W RMS Class D Marine Series 8-Channel Marine Amplifier

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JBL Marine A758 (MA758AM)

1000W RMS Class D Marine Series 8-Channel Marine Amplifier

• 75 watts x 8 channel @ 4 ohm
• 125 watts x 8 channel @ 2 ohm
• Bridged: 250 watts x 4 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable 8-Channel-Channel Amplifier

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List price $699.95
-7% $649.95
Add to Cart

• 75 watts x 8 channel @ 4 ohm
• 125 watts x 8 channel @ 2 ohm
• Bridged: 250 watts x 4 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable 8-Channel-Channel Amplifier

Limited time!

Rockford Fosgate Punch P1 P1000X5

1000W RMS Class AB/BD Punch Series 5 Channel Car Amplifier

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Rockford Fosgate Punch P1 P1000X5

1000W RMS Class AB/BD Punch Series 5 Channel Car Amplifier

• 75 watts x 4 channel + 150 watts x 1 channel @ 4 ohm
• 125 watts x 4 channel + 300 watts x 1 channel @ 2 ohm
• 700 watts x 1 channel @ 1 ohm (subwoofer output)
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class AB / BD 2 ohm Stable 5-Channel Amplifier

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List price $689.99
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-10% $619.99
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• 75 watts x 4 channel + 150 watts x 1 channel @ 4 ohm
• 125 watts x 4 channel + 300 watts x 1 channel @ 2 ohm
• 700 watts x 1 channel @ 1 ohm (subwoofer output)
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class AB / BD 2 ohm Stable 5-Channel Amplifier

JBL ClubA754 (Club A 754) + Free NVX XFLOC4 Line-Output-Converter + Amp Kit

High Performance 4-Channel Amplifier + NVX 4-Channel L.O.C. + 8 Gauge Amp Kit

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JBL ClubA754 (Club A 754) + Free NVX XFLOC4 Line-Output-Converter + Amp Kit

High Performance 4-Channel Amplifier + NVX 4-Channel L.O.C. + 8 Gauge Amp Kit

• Class H Amp Technology
• 4 Ohm Stable Bridged: 200 Watts RMS x 2
• Variable High and Low-Pass Filters
• Variable Crossover
• Full On Board Protection

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List price $463.68
-31% $319.95
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• Class H Amp Technology
• 4 Ohm Stable Bridged: 200 Watts RMS x 2
• Variable High and Low-Pass Filters
• Variable Crossover
• Full On Board Protection

Limited time!

DS18 FRP-2.4K4/TI

2400W RMS Class D FRP Series 4-Channel Car Amplifier (Titanium)

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DS18 FRP-2.4K4/TI

2400W RMS Class D FRP Series 4-Channel Car Amplifier (Titanium)

• 250 watts x 4 channel @ 4 ohm
• 400 watts x 4 channel @ 2 ohm
• 600 watts x 4 channel @ 1 ohm
• Bridged: 750 watts x 2 channel @ 4 ohm
• Bridged: 1000 watts x 2 channel @ 2 ohm
• Total RMS Power: 2400 watts
• Class D 1 ohm Stable 4-Channel Amplifier

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NVX XKIT44

NVX XKIT44

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• 250 watts x 4 channel @ 4 ohm
• 400 watts x 4 channel @ 2 ohm
• 600 watts x 4 channel @ 1 ohm
• Bridged: 750 watts x 2 channel @ 4 ohm
• Bridged: 1000 watts x 2 channel @ 2 ohm
• Total RMS Power: 2400 watts
• Class D 1 ohm Stable 4-Channel Amplifier

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Rockford Fosgate Punch P1000X2

1000W RMS Class AB Punch Series 2 Channel Car Amplifier

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Rockford Fosgate Punch P1000X2

1000W RMS Class AB Punch Series 2 Channel Car Amplifier

• 300 watts x 2 channel @ 4 ohm
• 500 watts x 2 channel @ 2 ohm
• Bridged: 1000 watts x 1 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class A/B 2 ohm Stable 2-Channel Amplifier

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List price $549.99
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• 300 watts x 2 channel @ 4 ohm
• 500 watts x 2 channel @ 2 ohm
• Bridged: 1000 watts x 1 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class A/B 2 ohm Stable 2-Channel Amplifier

Limited time!

Rockford Fosgate Punch P600X4

600W RMS Class AB Punch Series 4 Channel Car Amplifier

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Rockford Fosgate Punch P600X4

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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List price $509.99
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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

AudioControl D-6.1200

1200W RMS Class D D-Series 6-Channel Car Amplifier with Digital Signal Processor

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AudioControl D-6.1200

1200W RMS Class D D-Series 6-Channel Car Amplifier with Digital Signal Processor

• 125 watts x 6 channel @ 4 ohm
• 200 watts x 6 channel @ 2 ohm
• Bridged: 400 watts x 3 channel @ 4 ohm
• Total RMS Power: 1200 watts
• Class D 2 ohm Stable 6-Channel Amplifier
• Built-in DSP (Digital Signal Processor)

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Save 30% off an NVX XKIT46 Amp Kit at Checkout! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT46 Amp Kit! No code needed — discount applies automatically at checkout.
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• 125 watts x 6 channel @ 4 ohm
• 200 watts x 6 channel @ 2 ohm
• Bridged: 400 watts x 3 channel @ 4 ohm
• Total RMS Power: 1200 watts
• Class D 2 ohm Stable 6-Channel Amplifier
• Built-in DSP (Digital Signal Processor)

AudioControl LC-4.800

800W RMS Class D LC Series 4 Channel Car Amplifier with AccuBass

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AudioControl LC-4.800

800W RMS Class D LC Series 4 Channel Car Amplifier with AccuBass

• 125 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total RMS Power: 800 watts
• Class 2 ohm Stable 4-Channel-Channel Amplifier

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Save 30% off an NVX XKIT44 Amp Kit at Checkout! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT44 Amp Kit! No code needed — discount applies automatically at checkout.
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• 125 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total RMS Power: 800 watts
• Class 2 ohm Stable 4-Channel-Channel Amplifier

NVX VADM5 v2 (VADM5v2)

1500W Peak (750W RMS) Class D V-Series 5-Channel Car/Marine/Powersports Amplifier with Bass Remote

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NVX VADM5 v2 (VADM5v2)

1500W Peak (750W RMS) Class D V-Series 5-Channel Car/Marine/Powersports Amplifier with Bass Remote

• 65 watts x 4 channel + 230 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 350 watts x 1 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 350 watts x 1 channel @ 2 ohm
• Total RMS Power: 750 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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• 65 watts x 4 channel + 230 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 350 watts x 1 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 350 watts x 1 channel @ 2 ohm
• Total RMS Power: 750 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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    FAQ for Multi-channel Amplifiers for Adding Speakers in 2013 550i

    Q: Can I upgrade or change the Multi-channel Amplifiers for Adding Speakers in 2013 BMW 550i?

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