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2013 BMW X3

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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 Stereo 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 X3

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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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.
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.
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.
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.
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.

Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
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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

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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List price $635.99
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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

Cerwin Vega CVP800.2D with Belva 8 Gauge Amp Kit

200W Peak CVP Series 2-Channel Class-D Amplifier with Bass Control Knob

CVP800.2D, BAK82 big
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Cerwin Vega CVP800.2D with Belva 8 Gauge Amp Kit

200W Peak CVP Series 2-Channel Class-D Amplifier with Bass Control Knob

• CVP Series 2-Channel Amplifier
• 200W x 2 @ 2Ω / 125W x 2 @ 4Ω
• 2-Ohm Stereo, 4-Ohm Bridged Full Range Operation
• Direct Short, Thermal, & Overload Circuits Protect Amplifier
• Includes Amplifier Wiring Kit

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• CVP Series 2-Channel Amplifier
• 200W x 2 @ 2Ω / 125W x 2 @ 4Ω
• 2-Ohm Stereo, 4-Ohm Bridged Full Range Operation
• Direct Short, Thermal, & Overload Circuits Protect Amplifier
• Includes Amplifier Wiring Kit

Belva BXA6404 with Belva 8 Gauge Amp Kit

640W Peak BX-Series Class A/B 4-Channel Car Audio Amplifier

BXA6404, BAK84 big
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Belva BXA6404 with Belva 8 Gauge Amp Kit

640W Peak BX-Series Class A/B 4-Channel Car Audio Amplifier

• @ 4 ohm
• @ 2 ohm
• Bridged: @ 4 ohm
• Total Peak Power: 640 watts
• Class A/B 2 ohm Stable 4-Channel-Channel
• Includes Amplifier Wiring Kit

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• @ 4 ohm
• @ 2 ohm
• Bridged: @ 4 ohm
• Total Peak Power: 640 watts
• Class A/B 2 ohm Stable 4-Channel-Channel
• Includes Amplifier Wiring Kit

Alpine KTP-445A with Belva 8 Gauge Amp Kit

Plug and Play Head Unit Power Pack for Use w/ 2005-Up Alpine Head Units with a Black Power Harness

KTP-445A, BAK84 big
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Alpine KTP-445A with Belva 8 Gauge Amp Kit

Plug and Play Head Unit Power Pack for Use w/ 2005-Up Alpine Head Units with a Black Power Harness

• Power Pack 4-Channel Class D for Select Alpine In-Dash Receivers
• 45W x 4 Chan. @ 4 Ohm
• Adjustable Gain Switch
• Plug-and-Play
• CEA-2006 Compliant

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• Power Pack 4-Channel Class D for Select Alpine In-Dash Receivers
• 45W x 4 Chan. @ 4 Ohm
• Adjustable Gain Switch
• Plug-and-Play
• CEA-2006 Compliant

Cerwin-Vega VCU84 with NVX 8 Gauge Amp Kit

1200W Peak (500W RMS) Class-D 4-Channel Marine Amplifier w/ Remote Turn On Trigger

VCU84, XKIT84 big
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Cerwin-Vega VCU84 with NVX 8 Gauge Amp Kit

1200W Peak (500W RMS) Class-D 4-Channel Marine Amplifier w/ Remote Turn On Trigger

• 80 Watts RMS x 4 @ 4 ohm
• 150 Watts RMS x 1 @ 2 ohm
• Total Peak Power:1200 Watts
• CEA-2006 Compliant/Preamp Outputs/LPF
• 0 to 12dB Bass Boost
• High Power Full Range Digital Class D Advanced Technology IR Chipset

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• 80 Watts RMS x 4 @ 4 ohm
• 150 Watts RMS x 1 @ 2 ohm
• Total Peak Power:1200 Watts
• CEA-2006 Compliant/Preamp Outputs/LPF
• 0 to 12dB Bass Boost
• High Power Full Range Digital Class D Advanced Technology IR Chipset

Rockford Fosgate Punch PM300X2 + NVX XKIT42

300W Punch Series Class A/B 2-Channel Marine Amplifier + NVX 4 Gauge Amp Wiring Kit

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Rockford Fosgate Punch PM300X2 + NVX XKIT42

300W Punch Series Class A/B 2-Channel Marine Amplifier + NVX 4 Gauge Amp Wiring Kit

• RMS: 100 watts x 2 chan. @ 4 ohm, 150 watts x 2 chan. @ 2 ohm, 300 watts 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

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• RMS: 100 watts x 2 chan. @ 4 ohm, 150 watts x 2 chan. @ 2 ohm, 300 watts 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

Infinity Reference 3004A (AMPRF3004AAM) + Belva BAK84 8 Gauge Amp Wiring Kit

Reference Series 4-channel Car Amplifier

Reference 3004A, BAK84 big
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Infinity Reference 3004A (AMPRF3004AAM) + Belva BAK84 8 Gauge Amp Wiring Kit

Reference Series 4-channel Car Amplifier

• 75 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• CEA-2006 Compliant/Preamp Outputs/LPF
• Low-profile chassis and a small overall footprint
• On-board circuitry protects the Reference 3004A from shorts, high-temperature, overvoltage and undervoltage.
• Dimensions: 12-5/8" W x 7" D x 2-3/16" H
• Includes Belva BAK84 8 Gauge Amp Wiring Kit

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List price $429.94
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• 75 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• CEA-2006 Compliant/Preamp Outputs/LPF
• Low-profile chassis and a small overall footprint
• On-board circuitry protects the Reference 3004A from shorts, high-temperature, overvoltage and undervoltage.
• Dimensions: 12-5/8" W x 7" D x 2-3/16" H
• Includes Belva BAK84 8 Gauge Amp Wiring Kit

Rockford Fosgate M2-200X2 + NVX XKIT42 4 Gauge Amp Wiring Kit

200 Watts RMS 2-Channel Marine Amplifier

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Rockford Fosgate M2-200X2 + NVX XKIT42 4 Gauge Amp Wiring Kit

200 Watts RMS 2-Channel Marine Amplifier

• 50 Watts x 2 @ 4 ohm
• 100 Watts x 2 @ 2 ohm
• 200 Watts x 1 @ 4ohm Bridged/Mono
• Full-Range Efficient Class-D
• 2-Channel Element Ready Amplifier
• CEA-2006 Compliant & CE Compliant

• Includes NVX XKIT42 4 Gauge Amp Wiring Kit

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• 50 Watts x 2 @ 4 ohm
• 100 Watts x 2 @ 2 ohm
• 200 Watts x 1 @ 4ohm Bridged/Mono
• Full-Range Efficient Class-D
• 2-Channel Element Ready Amplifier
• CEA-2006 Compliant & CE Compliant

• Includes NVX XKIT42 4 Gauge Amp Wiring Kit

Cerwin-Vega XED8005D with Belva 8 Gauge Amp Kit

XED Series 5-Channel Class D Amplifier

XED8005D, BAK84 big
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Cerwin-Vega XED8005D with Belva 8 Gauge Amp Kit

XED Series 5-Channel Class D Amplifier

• RMS Power: 80 watts x 4 chan. + 200 watts x 1 chan. @ 4 ohm
• 120 watts x 4 chan. + 280 watts x 1 chan. @ 2 ohm
• 330 watts x 1 chan. @ 1 ohm
• Total Peak Power: 1000 W
• CEA-2006 Compliant/Preamp Outputs/LPF
• Dimensions: 4.7"W x 10.3"L x 1.8"H

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• RMS Power: 80 watts x 4 chan. + 200 watts x 1 chan. @ 4 ohm
• 120 watts x 4 chan. + 280 watts x 1 chan. @ 2 ohm
• 330 watts x 1 chan. @ 1 ohm
• Total Peak Power: 1000 W
• CEA-2006 Compliant/Preamp Outputs/LPF
• Dimensions: 4.7"W x 10.3"L x 1.8"H

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Rockford Fosgate Punch P300X2 with Amplifier Wiring Kit

300W RMS Punch Series 2-Channel Stereo Class AB Car Power Amplifier (P300X.2)

P300X2, XKIT42 big
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Rockford Fosgate Punch P300X2 with Amplifier Wiring Kit

300W RMS Punch Series 2-Channel Stereo Class AB Car Power Amplifier (P300X.2)

• 100W x 2 Chan. @ 4 ohm
• 150W x 2 Chan. @ 2 ohm
• Built In NOMAD "Real Time" Analog Computer
• 2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• MESHA3 Reduces MOSFET Temperatures for Improved Durability

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• 100W x 2 Chan. @ 4 ohm
• 150W x 2 Chan. @ 2 ohm
• Built In NOMAD "Real Time" Analog Computer
• 2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• MESHA3 Reduces MOSFET Temperatures for Improved Durability

Autotek MM-1525.2D (Mean Machine) with Belva 4 Gauge Amp Kit

1500W Peak Class D Mean Machine Series 2-Channel Car Amplifier

MM15252D_BAK42 big
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Autotek MM-1525.2D (Mean Machine) with Belva 4 Gauge Amp Kit

1500W Peak Class D Mean Machine Series 2-Channel Car Amplifier

• Total power output: 1500 watts
• Class D Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• Total power output: 1500 watts
• Class D Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Crunch DR-1325.4D with Belva 4 Gauge Amp Kit

1325W Peak Class D V-Drive Series 4-Channel Full Range Car Amplifier

DR13254D_BAK44 big
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Crunch DR-1325.4D with Belva 4 Gauge Amp Kit

1325W Peak Class D V-Drive Series 4-Channel Full Range Car Amplifier

• 165 watts x 4 channel @ 4 ohm
• 330 watts x 4 channel @ 2 ohm
• Bridged: 660 watts x 2 channel @ 4 ohm
• Total peak power output: 1325 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 165 watts x 4 channel @ 4 ohm
• 330 watts x 4 channel @ 2 ohm
• Bridged: 660 watts x 2 channel @ 4 ohm
• Total peak power output: 1325 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Crunch DR-2525.4D with Belva 4 Gauge Amp Kit

2525W Peak Class D V-Drive Series 4-Channel Full Range Car Amplifier

DR25254D_BAK44 big
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Crunch DR-2525.4D with Belva 4 Gauge Amp Kit

2525W Peak Class D V-Drive Series 4-Channel Full Range Car Amplifier

• 320 watts x 4 channel @ 4 ohm
• 630 watts x 4 channel @ 2 ohm
• Bridged: 1260 watts x 2 channel @ 4 ohm
• Total peak power output: 2525 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 320 watts x 4 channel @ 4 ohm
• 630 watts x 4 channel @ 2 ohm
• Bridged: 1260 watts x 2 channel @ 4 ohm
• Total peak power output: 2525 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Crunch DR-2125.2D with Belva 4 Gauge Amp Kit

2125W Peak Class D V-Drive Series 2-Channel Full Range Car Amplifier

DR21252D_BAK42 big
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Crunch DR-2125.2D with Belva 4 Gauge Amp Kit

2125W Peak Class D V-Drive Series 2-Channel Full Range Car Amplifier

• 530 watts x 2 channel @ 4 ohm
• 1060 watts x 2 channel @ 2 ohm
• Bridged: 2125 watts x 1 channel @ 4 ohm
• Class D 2 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 530 watts x 2 channel @ 4 ohm
• 1060 watts x 2 channel @ 2 ohm
• Bridged: 2125 watts x 1 channel @ 4 ohm
• Class D 2 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Crunch DR-3125.2D with Belva 4 Gauge Amp Kit

3125W Peak Class D V-Drive Series 2-Channel Full Range Car Amplifier

DR31252D_BAK42 big
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Crunch DR-3125.2D with Belva 4 Gauge Amp Kit

3125W Peak Class D V-Drive Series 2-Channel Full Range Car Amplifier

• 780 watts x 2 channel @ 4 ohm
• 1560 watts x 2 channel @ 2 ohm
• Bridged: 3125 watts x 1 channel @ 4 ohm
• Class D 2 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 780 watts x 2 channel @ 4 ohm
• 1560 watts x 2 channel @ 2 ohm
• Bridged: 3125 watts x 1 channel @ 4 ohm
• Class D 2 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Deaf Bonce MFA 2.420 with Belva 4 Gauge Amp Kit

1260W RMS Machete Series Class D 2-Channel Car Amplifier

MFA2420_BAK42 big
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Deaf Bonce MFA 2.420 with Belva 4 Gauge Amp Kit

1260W RMS Machete Series Class D 2-Channel Car Amplifier

• 420 watts x 2 channel @ 4 ohm
• 630 watts x 2 channel @ 2 ohm
• Bridged: 1260 watts x 1 channel @ 4 ohm
• Total RMS Power: 1260 watts
• Class D 2 ohm Stable 2-Channel Amplifier
• Includes Amplifier Wiring Kit

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169
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• 420 watts x 2 channel @ 4 ohm
• 630 watts x 2 channel @ 2 ohm
• Bridged: 1260 watts x 1 channel @ 4 ohm
• Total RMS Power: 1260 watts
• Class D 2 ohm Stable 2-Channel Amplifier
• Includes Amplifier Wiring Kit

DS18 SXE-1200.4/BK (Black) with Belva 4 Gauge Amp Kit

1200W Peak (400W RMS) Class AB SXE Series 4-channel Car Amplifier

SXE12004BK_BAK44 big
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DS18 SXE-1200.4/BK (Black) with Belva 4 Gauge Amp Kit

1200W Peak (400W RMS) Class AB SXE 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-Channel Amplifier (Black)
• Includes Amplifier Wiring Kit

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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-Channel Amplifier (Black)
• Includes Amplifier Wiring Kit

JVC KS-DR2004D with Belva 8 Gauge Amp Kit

600W Peak (150W RMS) DRVN Series Class-D 4-Channel Marine Amplifier

KSDR2004D_BAK84 big
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JVC KS-DR2004D with Belva 8 Gauge Amp Kit

600W Peak (150W RMS) DRVN Series Class-D 4-Channel Marine Amplifier

• 50 watts x 4 channel @ 4 ohm
• 75 watts x 4 channel @ 2 ohm
• Bridged: 150 watts x 2 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 50 watts x 4 channel @ 4 ohm
• 75 watts x 4 channel @ 2 ohm
• Bridged: 150 watts x 2 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

MTX TN3004 (TN300.4) with Belva 8 Gauge Amp Kit

300W RMS Class D Terminator Series 4-Channel Full Range Amplifier

TN3004_BAK84 big
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MTX TN3004 (TN300.4) with Belva 8 Gauge Amp Kit

300W RMS Class D Terminator Series 4-Channel Full Range Amplifier

• 50 watts x 4 channel + @ 4 ohm
• 75 watts x 4 channel + @ 2 ohm
• Bridged: 150 watts x 2 channel @ 4 ohm + @ 2 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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List price $339.94
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• 50 watts x 4 channel + @ 4 ohm
• 75 watts x 4 channel + @ 2 ohm
• Bridged: 150 watts x 2 channel @ 4 ohm + @ 2 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

MTX TN1502 with Belva 8 Gauge Amp Kit

150W RMS Class D Terminator Series 2-Channel Full Range Amplifier

TN1502_BAK82 big
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MTX TN1502 with Belva 8 Gauge Amp Kit

150W RMS Class D Terminator Series 2-Channel Full Range Amplifier

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

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

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    FAQ for Multi-channel Amplifiers for Adding Speakers in 2013 X3

    Q: Can I upgrade or change the Multi-channel Amplifiers for Adding Speakers in 2013 BMW X3?

    A: Yes this page includes all the best Multi-channel Amplifiers for Adding Speakers that work in your X3.

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