Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In
  1. Home
  2. Car Audio & Electronics
  3. Car Amplifiers
  4. Car Amplifier Packages & Bundles

Car Amplifier Packages & Bundles for your 2004 Z4 close

Filters
Reset Done
Show products that do not fit
Product Type
Price Range
Product Fitment Type
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.
Deals
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!
Availability

Your Vehicle

close
Checkmark Icon
2004 Z4
Product results for your vehicle – confirm details to verify fitment.
Update vehicle | Remove vehicle | Vehicle store

Shop the Category

filter-icon Filters & Sort

Sound Extreme by ECOXGEAR SEI-AMPEV30041 with NVX 8 Gauge Amp Kit

300W RMS EV Series Class-D 4-Channel Amplifier

EV30041_XKIT84 big
Go to item page Right Arrow Icon of Right Arrow

Sound Extreme by ECOXGEAR SEI-AMPEV30041 with NVX 8 Gauge Amp Kit

300W RMS EV Series Class-D 4-Channel Amplifier

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

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

39
List price $507.98
-21% $399.99

In stock

Add to Cart

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

Sound Extreme by ECOXGEAR SEI-AMP30041 with NVX 8 Gauge Amp Kit

300W RMS Class-D 4-Channel High Definition Marine Amplifier

A30041_XKIT84 big
Go to item page Right Arrow Icon of Right Arrow

Sound Extreme by ECOXGEAR SEI-AMP30041 with NVX 8 Gauge Amp Kit

300W RMS Class-D 4-Channel High Definition Marine Amplifier

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

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

39
List price $507.98
-39% $309.99

In stock

Only 1 Left!

Add to Cart

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

Sound Extreme by ECOXGEAR SEI-AMPEV30011 with NVX 8 Gauge Amp Kit

300W RMS EV Series Class-D Monoblock High Definition Marine Amplifier

EV30011_XKIT82 big
Go to item page Right Arrow Icon of Right Arrow

Sound Extreme by ECOXGEAR SEI-AMPEV30011 with NVX 8 Gauge Amp Kit

300W RMS EV Series Class-D Monoblock High Definition Marine Amplifier

• 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable Monoblock Amplifier
• Operating Voltage: 43V to 82V
• Marine-grade sealed die-cast aluminum chassis
• Includes Amplifier Wiring Kit

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

60
List price $395.98
-24% $299.99

In stock

Only 1 Left!

Add to Cart

• 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable Monoblock Amplifier
• Operating Voltage: 43V to 82V
• Marine-grade sealed die-cast aluminum chassis
• Includes Amplifier Wiring Kit

Sound Extreme by ECOXGEAR SEI-AMP30011 with NVX 8 Gauge Amp Kit

300W RMS Class-D Monoblock High Definition Marine Amplifier

A30011_XKIT82 big
Go to item page Right Arrow Icon of Right Arrow

Sound Extreme by ECOXGEAR SEI-AMP30011 with NVX 8 Gauge Amp Kit

300W RMS Class-D Monoblock High Definition Marine Amplifier

• 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable Monoblock Amplifier
• Marine-grade sealed die-cast aluminum chassis
• Includes Amplifier Wiring Kit

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

60
List price $395.98
-39% $239.99

In stock

Only 2 Left!

Add to Cart

• 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 4 ohm Stable Monoblock Amplifier
• Marine-grade sealed die-cast aluminum chassis
• Includes Amplifier Wiring Kit

Diamond Audio DMD500.1D with DMD104 sub

500W RMS DMD Series Monoblock Class-D Amplifier + DMD Series 10" Subwoofer 4Ω DVC

DMD5001D_DMD104 big
Go to item page Right Arrow Icon of Right Arrow

Diamond Audio DMD500.1D with DMD104 sub

500W RMS DMD Series Monoblock Class-D Amplifier + DMD Series 10" Subwoofer 4Ω DVC

• 340 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes 10 inch Subwoofer

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $445.98
-15% $379.99

In stock

Only 1 Left!

Add to Cart

• 340 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes 10 inch Subwoofer

Wet Sounds SYN-DX 6 with NVX 4 Gauge Amp Kit

600W RMS SYN-DX Series Bridgeable Full Range 6-Channel Class D Marine Amplifier (WetSounds)

SYNDX6_XKIT46 big
Go to item page Right Arrow Icon of Right Arrow

Wet Sounds SYN-DX 6 with NVX 4 Gauge Amp Kit

600W RMS SYN-DX Series Bridgeable Full Range 6-Channel Class D Marine Amplifier (WetSounds)

• Class-D 2-Ohm Stable 6-Channel Amplifier
• Total power output: 1400 watts RMS
• Remote Turn-on
• Conformal coated PCB
• Variable high-pass filter: 50 - 250 Hz, 24 dB/octave
• Variable low-pass filter: 50 - 250 Hz, 24 dB/octave
• Fuse Rating: 30 A x 3
• Includes Amplifier Wiring Kit

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

45
List price $1679.98
-5% $1,597.48

In stock

Only 1 Left!

Add to Cart

• Class-D 2-Ohm Stable 6-Channel Amplifier
• Total power output: 1400 watts RMS
• Remote Turn-on
• Conformal coated PCB
• Variable high-pass filter: 50 - 250 Hz, 24 dB/octave
• Variable low-pass filter: 50 - 250 Hz, 24 dB/octave
• Fuse Rating: 30 A x 3
• Includes Amplifier Wiring Kit

Wet Sounds SDX4 with NVX 4 Gauge Amp Kit

1370 Watt Sinister Series Full Range 4-Channel Class D Amplifier (WetSounds)

SDX4_XKIT44 big
Go to item page Right Arrow Icon of Right Arrow

Wet Sounds SDX4 with NVX 4 Gauge Amp Kit

1370 Watt Sinister Series Full Range 4-Channel Class D Amplifier (WetSounds)

• RMS: 185W x 4 @ 4 ohm, 340W x 4 @ 2 ohm, Bridged: 685W x 2 @ 4 ohm
• Total RMS Power: 1370 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

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

80
List price $1955.98
$1,889.98

In stock

Only 2 Left!

Add to Cart

• RMS: 185W x 4 @ 4 ohm, 340W x 4 @ 2 ohm, Bridged: 685W x 2 @ 4 ohm
• Total RMS Power: 1370 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

NVX ESW104 + VADM1 + XKIT82

500W Peak (250W RMS) E-Series 10" Car Subwoofer + Monoblock Car/Marine/Powersports Amplifier with Bass Remote with 2-Channel Amplifier Wiring Kit with RCA for Amplifiers up to 800 Watts

ESW104_VADM1_XKIT82 big
Go to item page Right Arrow Icon of Right Arrow

NVX ESW104 + VADM1 + XKIT82

500W Peak (250W RMS) E-Series 10" Car Subwoofer + Monoblock Car/Marine/Powersports Amplifier with Bass Remote with 2-Channel Amplifier Wiring Kit with RCA for Amplifiers up to 800 Watts

• Two 10" ESW104 E-Series 250W RMS Subwoofers
• 1200W Peak (600W RMS) Class D VADM1v2 Monoblock Amplifier
• XKIT82 Complete 8 AWG Amplifier Wiring Kit
• 1-year Warranty from the Original Purchase Date

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

81
List price $515.96
-21% $409.96

In stock

Add to Cart

• Two 10" ESW104 E-Series 250W RMS Subwoofers
• 1200W Peak (600W RMS) Class D VADM1v2 Monoblock Amplifier
• XKIT82 Complete 8 AWG Amplifier Wiring Kit
• 1-year Warranty from the Original Purchase Date

Lowest price in 30 days

NVX Audio Upgrade Kit – QB10SPA with 6x9" & 6.5" Speakers

1200W MAX (350W RMS) Single 10" Amplified Ported Sub Enclosure w/ Slot Ported Box, Remote, 6.5" & 6x9" Coaxial Speakers, Amp Kit, Sound Damping, and Roller

QB10SPA_65_69_STG1VKIT big
Go to item page Right Arrow Icon of Right Arrow

NVX Audio Upgrade Kit – QB10SPA with 6x9" & 6.5" Speakers

1200W MAX (350W RMS) Single 10" Amplified Ported Sub Enclosure w/ Slot Ported Box, Remote, 6.5" & 6x9" Coaxial Speakers, Amp Kit, Sound Damping, and Roller

• 10" Amplified Loaded Subwoofer System
• 350 watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control
• Includes 6.5 and 6x9 Co-axial Speaker and Damping Kits

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

249
List price $538.42
-41% $315.93

In stock

Add to Cart

• 10" Amplified Loaded Subwoofer System
• 350 watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control
• Includes 6.5 and 6x9 Co-axial Speaker and Damping Kits

NVX VAD10001 v2 Amp, XKIT42 2-Channel Amplifier Wiring Kit

2000W Peak (1000W RMS) Class D Monoblock Car/Marine/Powersports Amplifier and Full Spec 4 Gauge 100% OFC 2-Channel Amplifier Wiring Kit

VAD10001_XKIT42 big
Go to item page Right Arrow Icon of Right Arrow

NVX VAD10001 v2 Amp, XKIT42 2-Channel Amplifier Wiring Kit

2000W Peak (1000W RMS) Class D Monoblock Car/Marine/Powersports Amplifier and Full Spec 4 Gauge 100% OFC 2-Channel Amplifier Wiring Kit

  • NVX VAD10001 v2 2000W Peak Class D Monoblock Amplifier
  • Marine Certified for Car, Marine, and Powersports Use
  • Includes Wired Bass Remote for Precision Control
  • XKIT42 Full Spec 4 Gauge 100% OFC Wiring Kit
  • Complete 2-Channel Installation Solution with RCA Cables
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

158
List price $378.97
-23% $292.87

In stock

Add to Cart

  • NVX VAD10001 v2 2000W Peak Class D Monoblock Amplifier
  • Marine Certified for Car, Marine, and Powersports Use
  • Includes Wired Bass Remote for Precision Control
  • XKIT42 Full Spec 4 Gauge 100% OFC Wiring Kit
  • Complete 2-Channel Installation Solution with RCA Cables

NVX VAD10004 v2 Amp, XFLOC4 Line Output Converter and XKIT44 4 Gauge Amp Kit

1000W RMS Full Range Class D 4-Channel Amplifier with 4-Channel Line Output Converter and 4 Gauge 100% OFC Wiring Kit + Accessories

VAD10004_XFLOC4_XKIT44 big
Go to item page Right Arrow Icon of Right Arrow

NVX VAD10004 v2 Amp, XFLOC4 Line Output Converter and XKIT44 4 Gauge Amp Kit

1000W RMS Full Range Class D 4-Channel Amplifier with 4-Channel Line Output Converter and 4 Gauge 100% OFC Wiring Kit + Accessories

  • NVX 1000W RMS Full Range Class D 4-Channel Car and Marine Amplifier
  • 4-Channel 160W Adjustable Line Output Converter with Remote Turn On
  • Full Spec 4 Gauge 100% OFC Oxygen Free Copper Amplifier Wiring Kit
  • Complete bundle includes premium RCA cables for amplifiers up to 1500 Watts
  • Versatile high-power solution for car, marine, and powersports audio systems
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

135
List price $515.72
-18% $421.97

In stock

Add to Cart

  • NVX 1000W RMS Full Range Class D 4-Channel Car and Marine Amplifier
  • 4-Channel 160W Adjustable Line Output Converter with Remote Turn On
  • Full Spec 4 Gauge 100% OFC Oxygen Free Copper Amplifier Wiring Kit
  • Complete bundle includes premium RCA cables for amplifiers up to 1500 Watts
  • Versatile high-power solution for car, marine, and powersports audio systems

Cerwin Vega SRPM1100.5D with NVX 8 Gauge Amp Kit

980W RMS Stroker RPM Series Class-D 5-Channel Marine Amplifier with Bass Remote

SRPM11005D_XKIT86 big
Go to item page Right Arrow Icon of Right Arrow

Cerwin Vega SRPM1100.5D with NVX 8 Gauge Amp Kit

980W RMS Stroker RPM Series Class-D 5-Channel Marine Amplifier with Bass Remote

• 100 watts x 4 channel + 300 watts x 1 channel @ 4 ohm
• 120 watts x 4 channel + 500 watts x 1 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 980 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

82
List price $846.97
-29% $599.99

Available

Ships in 10-14 days

Add to Cart

• 100 watts x 4 channel + 300 watts x 1 channel @ 4 ohm
• 120 watts x 4 channel + 500 watts x 1 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 980 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

Lowest price in 30 days

Soundstream DPA1.2000D with Amplifier Wiring Kit

400W RMS Reserve Series Class D Monoblock Car Amplifier with Bass Remote

DPA1.2000D, BAK82 big
Go to item page Right Arrow Icon of Right Arrow

Soundstream DPA1.2000D with Amplifier Wiring Kit

400W RMS Reserve Series Class D Monoblock Car Amplifier with Bass Remote

• 250 watts x 1 channel @ 4 ohm
• 400 watts x 1 channel @ 2 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Top-Mounted LCD Panel for Tuning
• Includes Amplifier Wiring Kit

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

97
List price $259.98
-47% $137.48

Available

Ships in 10-14 days

Add to Cart

• 250 watts x 1 channel @ 4 ohm
• 400 watts x 1 channel @ 2 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Top-Mounted LCD Panel for Tuning
• Includes Amplifier Wiring Kit

Sundown Audio UV.2 15" D4 + NVX XCA3K

1 pair of 1750W RMS 15" U Series Dual 4-ohm Car Subwoofer with Monoblock Amplifier with LED Remote Bass Knob

UV215D4_XCA3K big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Sundown Audio UV.2 15" D4 + NVX XCA3K

1 pair of 1750W RMS 15" U Series Dual 4-ohm Car Subwoofer with Monoblock Amplifier with LED Remote Bass Knob

• RMS Power: 1750 watts
• Impedance: Dual 4 ohm
• Mount depth: 9"
• Sensitivity: 87.32 dB

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

2
List price $2687.97
-20% $2,139.97
Add to Cart

• RMS Power: 1750 watts
• Impedance: Dual 4 ohm
• Mount depth: 9"
• Sensitivity: 87.32 dB

Rockford Fosgate Power T500-1bdCP & BAK42 4 AWG Amp Kit

500W RMS Constant Power Series Class BD Monoblock Amplifier

T500-1bdCP, BAK42 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Power T500-1bdCP & BAK42 4 AWG Amp Kit

500W RMS Constant Power Series Class BD Monoblock Amplifier

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

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

185
List price $609.98
-6% $574.48

Available

Ships in 10-14 days

Add to Cart

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

Rockford Fosgate PM400X4 + NVX XFLOC4 Line-Output-Converter + Amp Kit

400W 4-Channel Marine Amplifier + NVX 4-Channel L.O.C + Amp Kit

PM400X4, XFLOC4, BAK44 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate PM400X4 + NVX XFLOC4 Line-Output-Converter + Amp Kit

400W 4-Channel Marine Amplifier + NVX 4-Channel L.O.C + Amp Kit

• RMS: 50 watts x 4 chan. @ 4 ohm, 100 watts x 4 chan. @ 2 ohm, Bridged 200 watts x 2 chan. @ 4 ohm
• 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

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

60
List price $623.72
-17% $519.99

Available

Ships in 10-14 days

Add to Cart

• RMS: 50 watts x 4 chan. @ 4 ohm, 100 watts x 4 chan. @ 2 ohm, Bridged 200 watts x 2 chan. @ 4 ohm
• 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

Kenwood KAC-9106D w/Belva 1.0 Farad Capacitor + Belva 2000 Watt Handling Amp Kit

1000W RMS Class D Monoblock Car Amplifier w/ 1.0 Farad Capacitor & 4 AWG Amp Kit

BAK42BK,BB1D,KAC-9106D big
Go to item page Right Arrow Icon of Right Arrow

Kenwood KAC-9106D w/Belva 1.0 Farad Capacitor + Belva 2000 Watt Handling Amp Kit

1000W RMS Class D Monoblock Car Amplifier w/ 1.0 Farad Capacitor & 4 AWG Amp Kit

• Kenwood KAC-9106D Performance Series 1000W Class-D Monoblock Amplifier
• Belva BAK42 Complete 4 Gauge 2-Channel Amplifier Installation Kit
• Belva BB1D 1.0 Farad Capacitor
• RMS: 500W x 1 @ 4 ohm
• Premium Power and Ground Wire Provides Optimal Power Transfer

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

177
List price $539.98
-26% $400.78

Available

Ships in 10-14 days

Add to Cart

• Kenwood KAC-9106D Performance Series 1000W Class-D Monoblock Amplifier
• Belva BAK42 Complete 4 Gauge 2-Channel Amplifier Installation Kit
• Belva BB1D 1.0 Farad Capacitor
• RMS: 500W x 1 @ 4 ohm
• Premium Power and Ground Wire Provides Optimal Power Transfer

Cerwin-Vega SPRO2100.1D with Belva 1/0 Gauge Amp Kit

2100W Peak (2100W RMS) Class-D Monoblock 1-Ohm Stable Amplifier with Bass Knob

SPRO2100.1D, BAK02 big
Go to item page Right Arrow Icon of Right Arrow

Cerwin-Vega SPRO2100.1D with Belva 1/0 Gauge Amp Kit

2100W Peak (2100W RMS) Class-D Monoblock 1-Ohm Stable Amplifier with Bass Knob

• 900 Watts RMS x 1 @ 4 ohm
• 1400 Watts RMS x 1 @ 2 ohm
• 2100 Watts RMS x 1 @ 1 ohm, bridged
• Total Peak Power: 2100 Watts
• Built-in Low-Pass and Subsonic Filteres
• 0-12 dB Bass Boost
• Aluminum Heatsink
• Dimensions: 10.23" W x 18.03" L x 2.81" H

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

77
List price $861.98
-18% $709.98

In stock.

Add to Cart

• 900 Watts RMS x 1 @ 4 ohm
• 1400 Watts RMS x 1 @ 2 ohm
• 2100 Watts RMS x 1 @ 1 ohm, bridged
• Total Peak Power: 2100 Watts
• Built-in Low-Pass and Subsonic Filteres
• 0-12 dB Bass Boost
• Aluminum Heatsink
• Dimensions: 10.23" W x 18.03" L x 2.81" H

Alpine HDA-M80 with NVX 4 Gauge Amp Kit

800W RMS Status Series Class-D Monoblock Car Amplifier

HDA-M80, XKIT42 big
Go to item page Right Arrow Icon of Right Arrow

Alpine HDA-M80 with NVX 4 Gauge Amp Kit

800W RMS Status Series Class-D Monoblock Car Amplifier

• Peak RMS Power: Up to 800W
• Total RMS Power: 400 watts
• Quick-connect speaker and power connectors
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

125
List price $1223.99
-20% $976.94

Available

Ships in 10-14 days

Add to Cart

• Peak RMS Power: Up to 800W
• Total RMS Power: 400 watts
• Quick-connect speaker and power connectors
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Kenwood eXcelon XR601-1 + NVX Premium XKIT42

600W RMS XR Series 2-ohm Stable Class-D Monoblock Amplifier w/ Bass Knob Included + NVX 4 Gauge Amp Wiring Kit

XR601-1, XKIT42 big
Go to item page Right Arrow Icon of Right Arrow

Kenwood eXcelon XR601-1 + NVX Premium XKIT42

600W RMS XR Series 2-ohm Stable Class-D Monoblock Amplifier w/ Bass Knob Included + NVX 4 Gauge Amp Wiring Kit

• 400 Watts RMS x 1 @ 4 ohm
• 600 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 1200 Watts
• CEA-2006 Compliant
• Bass Knob Included
• Aluminum Heatsink
• Dimensions: 8-11/16" W x 6-5/8" L x 1-3/8" H

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

124
List price $663.99
-21% $525.99

Available

Ships in 10-14 days

Add to Cart

• 400 Watts RMS x 1 @ 4 ohm
• 600 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 1200 Watts
• CEA-2006 Compliant
• Bass Knob Included
• Aluminum Heatsink
• Dimensions: 8-11/16" W x 6-5/8" L x 1-3/8" H

Prev 13 14 15 16 17 Next

Items per page: 20 40 60

    Clear all
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    Save up to 10 different vehicles in your garage
    Vehicle
    Store     Delete

    2004 BMW Z4

    2015 Nissan Leaf

    2016 Audi A5 Quattro

    2013 GMC Terrain

    2007 Mazda Mazdaspeed3

    2014 Audi A5

    2005 Suzuki Reno

    2006 Volvo C70

    1984 Saab 900

    2001 Toyota RAV4

    Vehicle
    Store     Delete

    2013 Harley Davidson FLD Switchback

    Vehicle
    Store     Delete

    2012 Can-Am Commander 1000

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm

    Cancel

    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue

    Cancel

    Shop your 2004 Z4
    Why Use a Vehicle Fit Guide?
    Change vehicle | Shop without vehicle
    Whoa! Slow down. Add your details below!
    additional information required
    Add vehicle details to confirm fitment
    Ignore fitment details
    Find stereos and more that work -- fast.

    Additional information:

    Remove

    Can't find your vehicle? Click here and we'll help.

    Where to find vehicle info

    Go to Fitment

    Didn't find your car?

    Submit your details and we'll help!
    Please enter the letters as they are shown in the image above. Letters are not case-sensitive.
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon
    Back

    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.

    Back
    Track your order
    Call our experts
    Support Center
    Return & Exchanges
    Follow on Instagram Instagram logo
    Subscribe on YouTube YouTube logo