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  3. Car Amplifiers
  4. Car Amplifier Packages & Bundles

Car Amplifier Packages & Bundles for your 2004 525i close

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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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2004 525i
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MB Quart RA1-300.1 with Belva 4 Gauge Amp Kit

325W RMS Reference Series Class-D Monoblock Amplifier with Bass Remote

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MB Quart RA1-300.1 with Belva 4 Gauge Amp Kit

325W RMS Reference Series Class-D Monoblock Amplifier with Bass Remote

• 175 watts x 1 channel @ 4 ohm
• 325 watts x 1 channel @ 2 ohm
• Total RMS Power: 325 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 175 watts x 1 channel @ 4 ohm
• 325 watts x 1 channel @ 2 ohm
• Total RMS Power: 325 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

MB Quart RA1-750.1 with Belva 4 Gauge Amp Kit

750W RMS Monoblock Reference Series Full Range Class D Subwoofer Amplifier

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MB Quart RA1-750.1 with Belva 4 Gauge Amp Kit

750W RMS Monoblock Reference Series Full Range Class D Subwoofer Amplifier

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

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169
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• 300 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• 750 watts x 1 channel @ 1 ohm
• Total RMS Power: 750 watts
• Class D 1 ohm Stable Monoblock Amplifier
• 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 HX1200.5 with NVX 4 Gauge Amp Kit

1400W RMS HEX Series 5-Channel Class-D Amplifier

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Diamond Audio HX1200.5 with NVX 4 Gauge Amp Kit

1400W RMS HEX Series 5-Channel Class-D Amplifier

• 100 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power: 1200 watts
• Class D 2 ohm Stable 5-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: @ 4 ohm
• Total RMS Power: 1200 watts
• Class D 2 ohm Stable 5-Channel 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

DS18 NXL-X900.6D with NVX 4 Gauge Amp Kit

3000W Peak Class D HYDRO Series 6-Channel Marine and Powersports Amplifier

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DS18 NXL-X900.6D with NVX 4 Gauge Amp Kit

3000W Peak Class D HYDRO Series 6-Channel Marine and Powersports Amplifier

• 150 watts x 6 channel @ 4 ohm
• 250 watts x 6 channel @ 2 ohm
• 500 watts x 3 channel @ 1 ohm
• IPX6 waterproof rating
• Class D 2 ohm Stable 6-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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-9% $930.94

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• 150 watts x 6 channel @ 4 ohm
• 250 watts x 6 channel @ 2 ohm
• 500 watts x 3 channel @ 1 ohm
• IPX6 waterproof rating
• Class D 2 ohm Stable 6-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Hertz HP 802 with NVX 1/0 Gauge Amp Kit

1800W RMS HP Series Class-AB 2-Channel Amplifier

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Hertz HP 802 with NVX 1/0 Gauge Amp Kit

1800W RMS HP Series Class-AB 2-Channel Amplifier

• 330 watts x 2 channel @ 4 ohm
• 550 watts x 2 channel @ 2 ohm
• Total RMS Power: 1800 watts
• Class A/B 4 ohm Stable 2-Channel Amplifier
• Includes Amplifier Wiring Kit

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42
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• 330 watts x 2 channel @ 4 ohm
• 550 watts x 2 channel @ 2 ohm
• Total RMS Power: 1800 watts
• Class A/B 4 ohm Stable 2-Channel Amplifier
• Includes Amplifier Wiring Kit

Hertz Venezia V1 with NVX 4 Gauge Amp Kit

1260W RMS Venezia Series Class-D Monoblock Marine Amplifier

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Hertz Venezia V1 with NVX 4 Gauge Amp Kit

1260W RMS Venezia Series Class-D Monoblock Marine Amplifier

• 700 watts x 1 channel @ 4 ohm
• 1260 watts x 1 channel @ 2 ohm
• 1260 watts x 1 channel @ 1 ohm
• Total RMS Power: 1260 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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List price $1283.99
-22% $999.99

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• 700 watts x 1 channel @ 4 ohm
• 1260 watts x 1 channel @ 2 ohm
• 1260 watts x 1 channel @ 1 ohm
• Total RMS Power: 1260 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Wet Sounds SDX-6 with NVX 4 Gauge Amp Kit

1755 Watt Sinister Series Full Range 6-Channel Class D Amplifier (WetSounds)

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Wet Sounds SDX-6 with NVX 4 Gauge Amp Kit

1755 Watt Sinister Series Full Range 6-Channel Class D Amplifier (WetSounds)

• RMS: 185W x 6 @ 4 ohm, 290W x 6 @ 2 ohm, Bridged: 585W x 3 @ 4 ohm
• Total RMS Power: 1755 watts
• Wet Sounds Unique Transformer
• Advanced Intelligent Microprocessor Control
• Top Mounted Crossover Controls
• Dimensions: 13" W x 19" L x 5" H
• Includes Amplifier Wiring Kit

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List price $2079.98
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• RMS: 185W x 6 @ 4 ohm, 290W x 6 @ 2 ohm, Bridged: 585W x 3 @ 4 ohm
• Total RMS Power: 1755 watts
• Wet Sounds Unique Transformer
• Advanced Intelligent Microprocessor Control
• Top Mounted Crossover Controls
• Dimensions: 13" W x 19" L x 5" H
• Includes Amplifier Wiring Kit

Wet Sounds SDX2 with NVX 4 Gauge Amp Kit

1250 Watt Sinister Series Full Range 2-Channel Class D Amplifier (WetSounds)

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Wet Sounds SDX2 with NVX 4 Gauge Amp Kit

1250 Watt Sinister Series Full Range 2-Channel Class D Amplifier (WetSounds)

• RMS: 400W x 2 @ 4 ohm, 620W x 2 @ 2 ohm, Bridged: 1250W x 1 @ 4 ohm
• Total RMS Power: 1250 watts
• Wet Sounds unique transformer
• Advanced Intelligent Microprocessor Control
• Top mounted crossover controls
• Dimensions: 9.82" W x 13.50" L x 2.70" H
• Includes Amplifier Wiring Kit

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• RMS: 400W x 2 @ 4 ohm, 620W x 2 @ 2 ohm, Bridged: 1250W x 1 @ 4 ohm
• Total RMS Power: 1250 watts
• Wet Sounds unique transformer
• Advanced Intelligent Microprocessor Control
• Top mounted crossover controls
• Dimensions: 9.82" W x 13.50" L x 2.70" H
• Includes Amplifier Wiring Kit

Wet Sounds Sinister-SDX2500 with NVX 1/0 Gauge Amp Kit

2500W RMS Class D Monoblock Subwoofer Amplifier

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Wet Sounds Sinister-SDX2500 with NVX 1/0 Gauge Amp Kit

2500W RMS Class D Monoblock Subwoofer Amplifier

• RMS: 1000 watts x 1 chan. @ 4 Ohm <1.0% THD, 1700 watts x 1 chan. @ 2 Ohm <1.0% THD, 2500 watts x 1 chan. @ 4 Ohm <1.0% THD
• Total power output: 2500 watts RMS
• MAXED Power Supply
• Advanced Intelligent Microprocessor Control
• Includes Amplifier Wiring Kit
• Overvoltage/Undervoltage Protection
• DC Offset & Speaker Short Protection
• Dimensions: 10.25" W x 22.125" L x 3.0" H

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-10% $2,099.99

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• RMS: 1000 watts x 1 chan. @ 4 Ohm <1.0% THD, 1700 watts x 1 chan. @ 2 Ohm <1.0% THD, 2500 watts x 1 chan. @ 4 Ohm <1.0% THD
• Total power output: 2500 watts RMS
• MAXED Power Supply
• Advanced Intelligent Microprocessor Control
• Includes Amplifier Wiring Kit
• Overvoltage/Undervoltage Protection
• DC Offset & Speaker Short Protection
• Dimensions: 10.25" W x 22.125" L x 3.0" H

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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

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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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43
List price $1527.94
-6% $1,429.92

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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

DS18 SMD-2800.5 with NVX 1/0 Gauge Amp Kit

2800W RMS Class AB/D SMD Series 5 Channel Car Amplifier with Bass Remote

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DS18 SMD-2800.5 with NVX 1/0 Gauge Amp Kit

2800W RMS Class AB/D SMD Series 5 Channel Car Amplifier with Bass Remote

• 180 watts x 4 channel + 700 watts x 1 channel @ 4 ohm
• 250 watts x 4 channel + 1100 watts x 1 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm + 1100 watts x 1 channel @ 2 ohm
• Total RMS Power: 2800 watts
• Class AB / D 1 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 180 watts x 4 channel + 700 watts x 1 channel @ 4 ohm
• 250 watts x 4 channel + 1100 watts x 1 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm + 1100 watts x 1 channel @ 2 ohm
• Total RMS Power: 2800 watts
• Class AB / D 1 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

DS18 G3600.4D w/ NVX XKIT44

3600W Peak (1680W RMS) Class D Gen-X Series 4-Channel Car Amplifier w/ Full Spec 4 Gauge 100% (OFC) Oxygen Free Copper Complete 4-Channel Amplifier Wiring Kit

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DS18 G3600.4D w/ NVX XKIT44

3600W Peak (1680W RMS) Class D Gen-X Series 4-Channel Car Amplifier w/ Full Spec 4 Gauge 100% (OFC) Oxygen Free Copper Complete 4-Channel Amplifier Wiring Kit

• 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

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• 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

NVX MVPA6 with Amplifier Wiring Kit

Marine 900W Compact Marine/Powersports/Motorcycle Amplifier

MVPA6, XKIT86 big Out of stock
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NVX MVPA6 with Amplifier Wiring Kit

Marine 900W Compact Marine/Powersports/Motorcycle Amplifier

• 100 Watts RMS x 6 @ 4 ohm
• 150 Watts RMS x 1 @ 2 ohm
• CEA-2006 Compliant
• Weatherproof Amplifier
• Micro Amp
• Includes Amplifier Wiring Kit

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-30% $364.97
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• 100 Watts RMS x 6 @ 4 ohm
• 150 Watts RMS x 1 @ 2 ohm
• CEA-2006 Compliant
• Weatherproof Amplifier
• Micro Amp
• Includes Amplifier Wiring Kit

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Rockford Fosgate Punch P1000X2 + NVX XKIT42 4 Gauge Amp Wiring Kit

1000W RMS Punch Series 2-Channel Stereo Class AB Car Power Amplifier (P1000X.2)

P1000X2, XKIT42 big Out of stock
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Rockford Fosgate Punch P1000X2 + NVX XKIT42 4 Gauge Amp Wiring Kit

1000W RMS Punch Series 2-Channel Stereo Class AB Car Power Amplifier (P1000X.2)

• 300W x 2 Chan. @ 4 ohm
• 500W 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
• Includes NVX XKIT42 4 Gauge Amp Wiring Kit

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List price $693.98
-25% $517.49
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• 300W x 2 Chan. @ 4 ohm
• 500W 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
• Includes NVX XKIT42 4 Gauge Amp Wiring Kit

Cerwin Vega S91000.1D + Free High Quality NVX Amp Kit

Stroker Series 1000W RMS Class-D Monoblock Car Audio Amplifier

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Cerwin Vega S91000.1D + Free High Quality NVX Amp Kit

Stroker Series 1000W RMS Class-D Monoblock Car Audio Amplifier

• Cerwin Vega Stroker Series Monoblock Car Amplifier
• Crossover 35Hz – 350Hz
• Frequency Response: 10Hz – 35KHz
• Remote Bass Knob Included
• Amplifier Class: Class-D

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• Cerwin Vega Stroker Series Monoblock Car Amplifier
• Crossover 35Hz – 350Hz
• Frequency Response: 10Hz – 35KHz
• Remote Bass Knob Included
• Amplifier Class: Class-D

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Rockford Fosgate Punch P1000X5 with Amplifier Wiring Kit

1000W RMS Punch Series 5-Channel Stereo Full-Range Class BD Car Amplifier w/ Dedicated Sub Channel

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Rockford Fosgate Punch P1000X5 with Amplifier Wiring Kit

1000W RMS Punch Series 5-Channel Stereo Full-Range Class BD Car Amplifier w/ Dedicated Sub Channel

• 75W x 4 Chan. + 200W x Sub Chan. @ 4 ohm
• 100W x 4 Chan. + 400W Sub Chan. @ 2 ohm
• 100W x 5 Chan. RMS
• Built In NOMAD "Real Time" Analog Computer
• 5/4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• MESHA3 Reduces MOSFET Temperatures for Improved Durability
• Includes Amplifier Wiring Kit

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List price $869.98
-26% $646.62
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• 75W x 4 Chan. + 200W x Sub Chan. @ 4 ohm
• 100W x 4 Chan. + 400W Sub Chan. @ 2 ohm
• 100W x 5 Chan. RMS
• Built In NOMAD "Real Time" Analog Computer
• 5/4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• MESHA3 Reduces MOSFET Temperatures for Improved Durability
• Includes Amplifier Wiring Kit

Lowest price in 30 days

Sundown Audio SW-SAV215D4 + NVX XCA3K

1 pair 2500W Peak (1250W RMS) 15" SA Series Dual 4-ohm Subwoofer with Monoblock Amplifier with LED Remote Bass Knob

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Sundown Audio SW-SAV215D4 + NVX XCA3K

1 pair 2500W Peak (1250W RMS) 15" SA Series Dual 4-ohm Subwoofer with Monoblock Amplifier with LED Remote Bass Knob

• Peak Power: 2500 watts
• RMS Power: 1250 watts
• Impedance: Dual 4 ohm
• Competition Grade Paper cone
• Foam surround
• Mount depth: 8.65"
• Includes 1 pair of Subwoofer with amplifier

• Sensitivity: 87.08 dB

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• Peak Power: 2500 watts
• RMS Power: 1250 watts
• Impedance: Dual 4 ohm
• Competition Grade Paper cone
• Foam surround
• Mount depth: 8.65"
• Includes 1 pair of Subwoofer with amplifier

• Sensitivity: 87.08 dB

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Rockford Fosgate Punch PBR300X2 + NVX XKIT82 8 Gauge Amp Wiring Kit

300 Watts Punch Series Boosted Rail Compact 2-Channel Amplifier

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Rockford Fosgate Punch PBR300X2 + NVX XKIT82 8 Gauge Amp Wiring Kit

300 Watts Punch Series Boosted Rail Compact 2-Channel Amplifier

• RMS 100W x 2 @ 4 ohm, 150W x 2 @ 2 ohm, 300W x 1 @ 4 ohm Bridged
• Features Rockford Fosgate's Class-BR Topology
• CEA-2006 Compliant
• Ultra Compact Chassis
• Boosted Rail Design
• Dimensions: 6.75"L x 4.25"W x 1.53"H
• Includes NVX XKIT82 8 Gauge Amp Wiring Kit

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List price $375.98
-12% $329.98
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• RMS 100W x 2 @ 4 ohm, 150W x 2 @ 2 ohm, 300W x 1 @ 4 ohm Bridged
• Features Rockford Fosgate's Class-BR Topology
• CEA-2006 Compliant
• Ultra Compact Chassis
• Boosted Rail Design
• Dimensions: 6.75"L x 4.25"W x 1.53"H
• Includes NVX XKIT82 8 Gauge Amp Wiring Kit

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