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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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Alpine HDA-F60 with NVX 4 Gauge Amp Kit

600W RMS Status Series Class-D 4-Channel Car Amplifier

HDA-F60, XKIT44 big
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Alpine HDA-F60 with NVX 4 Gauge Amp Kit

600W RMS Status Series Class-D 4-Channel Car Amplifier

• 100 watts RMS x 4 at 4 ohm
• 150 watts RMS x 4 at 2 ohm
• 300 watts RMS x 2 bridged at 4 ohm
• Bridged: @ 4 ohm
• Total RMS Power: 150 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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81
List price $1355.99
-26% $999.95

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• 100 watts RMS x 4 at 4 ohm
• 150 watts RMS x 4 at 2 ohm
• 300 watts RMS x 2 bridged at 4 ohm
• Bridged: @ 4 ohm
• Total RMS Power: 150 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Crunch PZ2-2030.2D with Amplifier Wiring Kit

1000W RMS Powerzone 2 Series Class-D 2-Channel Car Amplifier Package

PZ2-2030.2D, BAK42 big
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Crunch PZ2-2030.2D with Amplifier Wiring Kit

1000W RMS Powerzone 2 Series Class-D 2-Channel Car Amplifier Package

• 4 ohm: 2 x 500
• 2 ohm: 2 x 1000
• 4 ohm: 1 x 2000
• Total RMS Power: 2000 watts
• Class D 2 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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-45% $119.99

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• 4 ohm: 2 x 500
• 2 ohm: 2 x 1000
• 4 ohm: 1 x 2000
• Total RMS Power: 2000 watts
• Class D 2 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Alpine HDA-V90 with NVX 4 Gauge Amp Kit

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

HDA-V90, XKIT46 big
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Alpine HDA-V90 with NVX 4 Gauge Amp Kit

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

• 75 watts RMS x 4 + 300 watts RMS x 1 at 4 ohm
• 100 watts RMS x 4 + 500 watts RMS x 1 at 2 ohm
• 200 watts RMS x 2 bridged at 4 ohm + 500 watts RMS x 1 at 2 ohm
• Total RMS Power: 900 watts
• Quick-connect power and speaker connectors
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 75 watts RMS x 4 + 300 watts RMS x 1 at 4 ohm
• 100 watts RMS x 4 + 500 watts RMS x 1 at 2 ohm
• 200 watts RMS x 2 bridged at 4 ohm + 500 watts RMS x 1 at 2 ohm
• Total RMS Power: 900 watts
• Quick-connect power and speaker connectors
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

Rockford Fosgate Power T1000-4AD with Amplifier Wiring Kit

1000W 4-Channel Class AD Power Series Constant Power Amplifier

T1000-4AD, BAK44 big
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Rockford Fosgate Power T1000-4AD with Amplifier Wiring Kit

1000W 4-Channel Class AD Power Series Constant Power Amplifier

• 1000W RMS
• 250W x 4-Chan @ 4 Ohm
• NOMAD Real Time Computer Protection
• 50-500 Hz LP/AP/HP Crossovers
• Includes Amplifier Wiring Kit

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• 1000W RMS
• 250W x 4-Chan @ 4 Ohm
• NOMAD Real Time Computer Protection
• 50-500 Hz LP/AP/HP Crossovers
• Includes Amplifier Wiring Kit

Rockford Fosgate M2-300X4 with Amplifier Wiring Kit

300 Watt 4-channel marine amplifier

M2-300X4, XKIT44 big
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Rockford Fosgate M2-300X4 with Amplifier Wiring Kit

300 Watt 4-channel marine amplifier

• 50 Watts x 4 @ 4 ohm<
• 75 Watts x 4 @ 2 ohm
• 150 Watts x 2 @ 4 ohm Bridged/Mono
• 4-Channel Marine Amplifier
• Top Mounted Control Panel
• 2/4 channel input switch

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• 50 Watts x 4 @ 4 ohm<
• 75 Watts x 4 @ 2 ohm
• 150 Watts x 2 @ 4 ohm Bridged/Mono
• 4-Channel Marine Amplifier
• Top Mounted Control Panel
• 2/4 channel input switch

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Memphis MX600.6 with Amplifier Wiring Kit

600W RMS MX-Series 6-Channel Class-D Marine/Powersports Amplifier

MX600.6, XKIT84, XIV25 big
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Memphis MX600.6 with Amplifier Wiring Kit

600W RMS MX-Series 6-Channel Class-D Marine/Powersports Amplifier

• 50 watts x 4 channel @ 4 ohm + 100 x 2 channel
• 75 watts x 4 channel @ 2 ohm + 150 x 2 channel
• Bridged: 150 watts x 2 channel @ 4 ohm + 300 x 1 Channel
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 6-Channel Amplifier

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82
List price $856.93
-66% $292.00

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• 50 watts x 4 channel @ 4 ohm + 100 x 2 channel
• 75 watts x 4 channel @ 2 ohm + 150 x 2 channel
• Bridged: 150 watts x 2 channel @ 4 ohm + 300 x 1 Channel
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 6-Channel Amplifier

Deaf Bonce MFA 2.520 with Belva 4 Gauge Amp Kit

1500W RMS Class D Machete Series 2-Channel Full Range Car Amplifier

MFA2520_BAK42 big
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Deaf Bonce MFA 2.520 with Belva 4 Gauge Amp Kit

1500W RMS Class D Machete Series 2-Channel Full Range Car Amplifier

• 520 watts x 2 channel @ 4 ohm
• 750 watts x 2 channel @ 2 ohm
• Bridged: 1500 watts x 1 channel @ 4 ohm
• Total RMS Power: 1500 watts
• Class D 2 ohm Stable 2-Channel-Channel Amplifier

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-12% $264.39

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• 520 watts x 2 channel @ 4 ohm
• 750 watts x 2 channel @ 2 ohm
• Bridged: 1500 watts x 1 channel @ 4 ohm
• Total RMS Power: 1500 watts
• Class D 2 ohm Stable 2-Channel-Channel Amplifier

MB Quart RA1-150.2 with Belva 4 Gauge Amp Kit

100W RMS 2-Channel Reference Series Full Range Class D Car Amplifier

RA11502_BAK42 big
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MB Quart RA1-150.2 with Belva 4 Gauge Amp Kit

100W RMS 2-Channel Reference Series Full Range Class D Car Amplifier

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

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169
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-10% $288.74

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

Deaf Bonce MFA 4.320 with NVX 4 Gauge Amp Kit

1920W RMS Machete Series Class D 4-Channel Amplifier

MFA4320_XKIT44 big
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Deaf Bonce MFA 4.320 with NVX 4 Gauge Amp Kit

1920W RMS Machete Series Class D 4-Channel Amplifier

• 320 watts x 4 channel @ 4 ohm
• 480 watts x 4 channel @ 2 ohm
• Bridged: 960 watts x 2 channel @ 4 ohm
• Total RMS Power: 1920 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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-15% $404.07

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• 320 watts x 4 channel @ 4 ohm
• 480 watts x 4 channel @ 2 ohm
• Bridged: 960 watts x 2 channel @ 4 ohm
• Total RMS Power: 1920 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Diamond Audio MICRO2V2 with NVX 8 Gauge Amp Kit

500W RMS Micro Series Class-D 2-Channel Amplifier

MICRO2V2_XKIT82 big
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Diamond Audio MICRO2V2 with NVX 8 Gauge Amp Kit

500W RMS Micro Series Class-D 2-Channel Amplifier

• 150 watts x 2 channel @ 4 ohm
• 250 watts x 2 channel @ 2 ohm
• Bridged: 500 watts x 1 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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-32% $349.99

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• 150 watts x 2 channel @ 4 ohm
• 250 watts x 2 channel @ 2 ohm
• Bridged: 500 watts x 1 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Diamond Audio HXM800.4D with NVX 8 Gauge Amp Kit

800W RMS HXM Series Class-D 4-Channel Full Range Amplifier

HXM8004D_XKIT84 big
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Diamond Audio HXM800.4D with NVX 8 Gauge Amp Kit

800W RMS HXM Series Class-D 4-Channel Full Range Amplifier

• 120 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 D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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-18% $649.99

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• 120 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 D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Hertz SP 4.500 with NVX 8 Gauge Amp Kit

600W RMS SPL Show Series Class-D 4-3- 2-Channel Amplifier

SP4500_XKIT84 big
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Hertz SP 4.500 with NVX 8 Gauge Amp Kit

600W RMS SPL Show Series Class-D 4-3- 2-Channel Amplifier

• 90 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Marine Amplifier
• Includes Amplifier Wiring Kit

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-26% $449.99

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• 90 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Marine Amplifier
• Includes Amplifier Wiring Kit

Kenwood eXcelon XM160-2-98 with NVX 8 Gauge Amp Kit

160W RMS eXcelon Series Class D 2-Channel Amplifier for Select 98-13 Harley Davidson Motorcycles

XM160298_XKIT82 big
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Kenwood eXcelon XM160-2-98 with NVX 8 Gauge Amp Kit

160W RMS eXcelon Series Class D 2-Channel Amplifier for Select 98-13 Harley Davidson Motorcycles

• 80 watts x 2 channel @ 2 ohm
• Total RMS Power: 160 watts
• Class D 2 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 80 watts x 2 channel @ 2 ohm
• Total RMS Power: 160 watts
• Class D 2 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Pioneer GM-DX874 with NVX 4 Gauge Amp Kit

1200W Peak (600W RMS) GM Series Class-FD 4-Channel Amplifier with Remote Bass Knob

GMDX874_XKIT44 big
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Pioneer GM-DX874 with NVX 4 Gauge Amp Kit

1200W Peak (600W RMS) GM Series Class-FD 4-Channel Amplifier with Remote Bass Knob

• 100 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 1 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 100 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 1 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Pioneer GM-DX975 with NVX 4 Gauge Amp Kit

2000W Peak (800W RMS) GM Series Class-D 5-Channel Amplifier with Remote Bass Knob

GMDX975_XKIT46 big
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Pioneer GM-DX975 with NVX 4 Gauge Amp Kit

2000W Peak (800W RMS) GM Series Class-D 5-Channel Amplifier with Remote Bass Knob

• 75 watts x 4 channel + 350 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 600 watts x 1 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 75 watts x 4 channel + 350 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 600 watts x 1 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

Rockford Fosgate Punch PM500X2 + NVX XKIT42 4 Gauge Amp Wiring Kit

500W Punch Series Class A/B 2-Channel Marine Amplifier

PM500X2, XKIT42 big
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Rockford Fosgate Punch PM500X2 + NVX XKIT42 4 Gauge Amp Wiring Kit

500W Punch Series Class A/B 2-Channel Marine Amplifier

• 150 watts RMS x 2 chan. @ 4 ohm
• 250 watts RMS x 2 chan. @ 2 ohm
• 500 watts RMS x 1 chan. @ 4 ohm Bridged
• CEA-2006 Compliant
• Features C.L.E.A.N. Set-up
• Protected against Dust, UV, & Corrosion
• Marine grade two part epoxy coating on circuit boards
• Includes NVX XKIT42 4 Gauge Amp Wiring Kit

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• 150 watts RMS x 2 chan. @ 4 ohm
• 250 watts RMS x 2 chan. @ 2 ohm
• 500 watts RMS x 1 chan. @ 4 ohm Bridged
• CEA-2006 Compliant
• Features C.L.E.A.N. Set-up
• Protected against Dust, UV, & Corrosion
• Marine grade two part epoxy coating on circuit boards
• Includes NVX XKIT42 4 Gauge Amp Wiring Kit

Diamond Audio HXM800.2D with NVX 4 Gauge Amp Kit

800W RMS Motorsport Series Full-Range Class D 2-Channel Marine Amplifier

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Diamond Audio HXM800.2D with NVX 4 Gauge Amp Kit

800W RMS Motorsport Series Full-Range Class D 2-Channel Marine Amplifier

• 300 watts x 2 channel @ 4 ohm
• 400 watts x 2 channel @ 2 ohm
• Bridged: 800 watts x 1 channel @ 4 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 300 watts x 2 channel @ 4 ohm
• 400 watts x 2 channel @ 2 ohm
• Bridged: 800 watts x 1 channel @ 4 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

JL Audio XDM400/4 (Open Box, Great)

400W RMS XDM Series Class D 4 Channel Car/Marine Amplifier

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JL Audio XDM400/4 (Open Box, Great)

400W RMS XDM Series Class D 4 Channel Car/Marine 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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List price $679.99
-20% $543.99

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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

Alpine R-A90S with RUX-KNOB.2

1500W RMS R-Series Class-D 6-Channel Amplifier + Remote Bass Knob for Alpine Amplifiers

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Alpine R-A90S with RUX-KNOB.2

1500W RMS R-Series Class-D 6-Channel Amplifier + Remote Bass Knob for Alpine Amplifiers

• 75 watts x 4 channel + 150 watts x 2 channel @ 4 ohm
• 100 watts x 4 channel + 250 watts x 2 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 500 watts x 1 channel @ 4 ohm
• Total RMS Power: 900 watts
• Class D 2 ohm Stable 6-Channel-Channel Amplifier

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-17% $749.90

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• 75 watts x 4 channel + 150 watts x 2 channel @ 4 ohm
• 100 watts x 4 channel + 250 watts x 2 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 500 watts x 1 channel @ 4 ohm
• Total RMS Power: 900 watts
• Class D 2 ohm Stable 6-Channel-Channel Amplifier

Rockford Fosgate M2-750X5 with Amplifier Wiring Kit

750 Watt 5-channel marine amplifier + NVX XKIT46

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Rockford Fosgate M2-750X5 with Amplifier Wiring Kit

750 Watt 5-channel marine amplifier + NVX XKIT46

• 50 Watts x 4 + 200 Watts x 1 @ 4 ohm
• 100 Watts x 4 + 350 Watts x 1 @ 2 ohm
• 200 Watts x 2 + N/A @ 4 ohm Bridged/Mono
• 5-Channel Amplifer
• Element Ready™ design protects against outdoor exposure
• Top Mounted Control Panel

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• 50 Watts x 4 + 200 Watts x 1 @ 4 ohm
• 100 Watts x 4 + 350 Watts x 1 @ 2 ohm
• 200 Watts x 2 + N/A @ 4 ohm Bridged/Mono
• 5-Channel Amplifer
• Element Ready™ design protects against outdoor exposure
• Top Mounted Control Panel

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