Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In

2019 BMW X4

Change vehicle | Remove vehicle

Single, 1-channel monoblock sub amplifiers for when you add a sub

Overview Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Amplifiers for Powering a Sub for 2019 BMW X4

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.

Filters
Reset Done
Product Type
Price Range
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.
Power Series (17)
Punch Series (16)
Prime Series (14)
FRP Series (12)
BX Series (9)
Apocalypse Atom Pro Series (8)
CVP Series (7)
JD Series (7)
RD Series (7)
SALT Series (7)
Brutus BRL Series (6)
Competition Series (6)
CX Series (6)
Godfather Series (6)
Hooligan Series (6)
Reference Series (6)
SIA Series (6)
SMD Series (6)
Stroker Pro Series (6)
V Series (6)
XDM Series (6)
Club Series (5)
Epic Series (5)
HD Series (5)
SAE Series (5)
Stroker RPM Series (5)
Brutus BG Series (4)
EXL-P Series (4)
LX Series (4)
MA Series (4)
Machete Series (4)
Power Pack Series (4)
RS Series (4)
SXE Series (4)
V-Drive Series (4)
VXi Series (4)
XC-Series (4)
XED Series (4)
XQ Series (4)
CRA Series (3)
DMD Series (3)
Elite Series (3)
eXcelon Series (3)
Formula Series (3)
Ground Pounder Series (3)
HEX Series (3)
Hydro Series (3)
iON Series (3)
Mini Series (3)
MX Series (3)
Nautic Series (3)
PXA Series (3)
SAM Series (3)
Thunder Series (3)
ZR Series (3)
ACX Series (2)
Altitude Series (2)
Apocalypse Series (2)
Apocalypse Sport Series (2)
BB Series (2)
COLOSSUS Mini Series (2)
Diamond Elite Series (2)
Excelon Reference Series (2)
EXL Series (2)
GM Series (2)
JA Series (2)
M2 Series (2)
MVi Series (2)
N-Series (2)
PowerHouse Shredder Series (2)
Premium Pro Series (2)
R-Series (2)
S Series (2)
SFB Series (2)
Stealth STX Series (2)
Stroker Series (2)
Terminator Series (2)
VEGA Series (2)
VFL Comp Series (2)
VFL Rebel Series (2)
VFL Stealth Series (2)
Alpha Series (1)
AP Series (1)
Colossus Classic Series (1)
COLOSSUS Series (1)
Compact Mean Machine Series (1)
CVPM Series (1)
Discus Series (1)
DPower Series (1)
DRVN Series (1)
DXM Series (1)
EV Series (1)
Excelon Motorsports Series (1)
FX Series (1)
Gen-X (1)
GM Digital Series (1)
HCCA Series (1)
HCP Series (1)
HED Series (1)
HMP Series (1)
HRPM Series (1)
HTM Series (1)
HXM Series (1)
Key Series (1)
KM Series (1)
KPX Series (1)
KXM Series (1)
LC Series (1)
M Series (1)
M5 Series (1)
Marine Series (1)
MDX Series (1)
Mean Machine Series (1)
MHD Series (1)
Micro8U Series (1)
MicroV2 Series (1)
MINI BANG Series (1)
MOJO Pro Series (1)
MotorSport Series (1)
MUD Series (1)
Performance Series (1)
Picasso-Nano Series (1)
Primo Series (1)
Primus Series (1)
PS Series (1)
Q-Series (1)
Reserve Series (1)
RTX Series (1)
SAEv4 Series (1)
Sinister Series (1)
SPL Show Series (1)
Stage GT Series (1)
Status Series (1)
Stealth Bomber Series (1)
Street Reference (1)
Venezia Series (1)
Warhorse Series (1)
X Series (1)
XFL Series (1)
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.
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!
Condition
Availability
filter-icon Filters & Sort
Limited time!

Hifonics Brutus BRL4000.1

4000W RMS Class D Brutus BRL Series Monoblock Car Amplifier with Bass Remote

BRL4000.1 big
Go to item page Right Arrow Icon of Right Arrow

Hifonics Brutus BRL4000.1

4000W RMS Class D Brutus BRL Series Monoblock Car Amplifier with Bass Remote

• 1500 watts x 1 channel @ 4 ohm
• 2800 watts x 1 channel @ 2 ohm
• 4000 watts x 1 channel @ 1 ohm
• Total RMS Power: 4000 watts
• Class D 1 ohm Stable Monoblock Amplifier

Save 30% off an NVX XKIT02 Amp Kit at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $49.90 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $599.00
-17% $499.00

In stock

Add to Cart
Available Deal
BRL4000.1 main
Offer may end without notice
Continue Shopping Continue to checkout
Eligible items

Shop items below for 30% off up to $100 discount on Save 30% off an NVX Amp Kit!

NVX XKIT02

NVX XKIT02

$179.99

$125.99

$54 Savings!

Add to cart
Limited time!

JL Audio VX1000/1i

1000W RMS Class D VXi Series Monoblock Car Amplifier with Built-in DSP

VX1000/1i big
Go to item page Right Arrow Icon of Right Arrow

JL Audio VX1000/1i

1000W RMS Class D VXi Series Monoblock Car Amplifier with Built-in DSP

• 600 watts x 1 channel @ 4 ohm
• 1000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes integrated DSP

Save 30% off an NVX XKIT02 Amp Kit at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $135.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $1449.99
Save $100.00
-7% $1,349.99

In stock

Only 1 Left!

Add to Cart
Available Deal
VX1000/1i main
Offer may end without notice
Continue Shopping Continue to checkout
Eligible items

Shop items below for 30% off up to $100 discount on Save 30% off an NVX Amp Kit!

NVX XKIT02

NVX XKIT02

$179.99

$125.99

$54 Savings!

Add to cart
Used from: $1,147.49
Limited time!

Kicker KXMA1500.1 (51KXMA15001)

2500W Peak (1500W RMS) Class D KXM Series Monoblock Marine Amplifier with Bass Remote

51KXMA15001 big
Go to item page Right Arrow Icon of Right Arrow

Kicker KXMA1500.1 (51KXMA15001)

2500W Peak (1500W RMS) Class D KXM Series Monoblock Marine Amplifier with Bass Remote

• 750 watts x 1 channel @ 4 ohm
• 1500 watts x 1 channel @ 2 ohm
• Total RMS Power: 1500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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

VIP Product Get $56.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $799.99
Save $240.03
-30% $559.96

In stock

Add to Cart

• 750 watts x 1 channel @ 4 ohm
• 1500 watts x 1 channel @ 2 ohm
• Total RMS Power: 1500 watts
• Class D 1 ohm Stable Monoblock Amplifier

Limited time!

Kicker PXA600.1 (48PXA6001) (Open Box, Great)

850W Peak (600W RMS) Class D PXA Series Monoblock Marine and Powersports Amplifier

PXA600.1 big
Go to item page Right Arrow Icon of Right Arrow

Kicker PXA600.1 (48PXA6001) (Open Box, Great)

850W Peak (600W RMS) Class D PXA Series Monoblock Marine and Powersports Amplifier

• 300 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 600 watts
• Class D 1 ohm Stable Monoblock Amplifier

10% Off Open Box!
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 $429.99
-35% $279.99
$251.99 with coupon | Price details

In stock

Only 1 Left!

Add to Cart

• 300 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 600 watts
• Class D 1 ohm Stable Monoblock Amplifier

Sundown Audio SAEv4-1000.1D

1000W RMS Class D SAE Series Monoblock Car Amplifier with Bass Remote (SAEv.4-1000D)

SAEv4-1000.1D big
Go to item page Right Arrow Icon of Right Arrow

Sundown Audio SAEv4-1000.1D

1000W RMS Class D SAE Series Monoblock Car Amplifier with Bass Remote (SAEv.4-1000D)

• 375 watts x 1 channel @ 4 ohm
• 650 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 1 ohm Stable Monoblock Amplifier

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

VIP Product Get $35.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $419.99
-17% $349.99

In stock

Only 2 Left!

Add to Cart

Kenwood eXcelon XR1001-1

2000W Peak (1000W RMS) Class D eXcelon Reference Series Monoblock Car Amplifier with Bass Remote

XR1001-1 big
Go to item page Right Arrow Icon of Right Arrow

Kenwood eXcelon XR1001-1

2000W Peak (1000W RMS) Class D eXcelon Reference Series Monoblock Car Amplifier with Bass Remote

• 500 watts x 1 channel @ 4 ohm
• 1000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier

2+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $69.90 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $770.00
-9% $699.00

In stock

Only 3 Left!

Add to Cart
Continue to cart
Available Offers (2) for Kenwood eXcelon XR1001-1
FREE NVX Amp Kit at Checkout!
Add both to cart
Save 30% on an NVX XKIT42 Amp Kit with Purchase! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT42 Amp Kit! No code needed — discount applies automatically at checkout.
Select your other item
See all 4 special offers

AudioControl EPIC750

750W RMS Class D Epic Series Monoblock Car Amplifier with Bass Remote

EPIC750 big
Go to item page Right Arrow Icon of Right Arrow

AudioControl EPIC750

750W RMS Class D Epic Series Monoblock Car Amplifier with Bass Remote

• 300 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• 750 watts x 1 channel @ 1 ohm
• Bridged (Strapped): 1500 watts x 1 channel @ 2 ohm
• Total RMS Power: 750 watts
• Class D 1 ohm Stable Monoblock Amplifier

2+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $18.90 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$189.00

In stock

Add to Cart
Continue to cart
Available Offers (2) for AudioControl EPIC750
FREE Belva Amp Kit at Checkout!
Add both to cart
Save 30% on an NVX XKIT42 Amp Kit with Purchase! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT42 Amp Kit! No code needed — discount applies automatically at checkout.
Select your other item

• 300 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• 750 watts x 1 channel @ 1 ohm
• Bridged (Strapped): 1500 watts x 1 channel @ 2 ohm
• Total RMS Power: 750 watts
• Class D 1 ohm Stable Monoblock Amplifier

JBL Stage GT 50011 (JBLSTAGEGT50011AM)

1220W Peak (500W RMS) Class D Stage GT Series Monoblock Car Amplifier with Bass Remote

JBLSTAGEGT50011AM big
Go to item page Right Arrow Icon of Right Arrow

JBL Stage GT 50011 (JBLSTAGEGT50011AM)

1220W Peak (500W RMS) Class D Stage GT Series Monoblock Car Amplifier with Bass Remote

• 300 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

2+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $25.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $299.95
-17% $249.95

In stock

Add to Cart
Continue to cart
Available Offers (2) for JBL Stage GT 50011 (JBLSTAGEGT50011AM)
FREE Belva Amp Kit at Checkout!
Add both to cart
Save 30% off an NVX XKIT82 Amp Kit at Checkout! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT82 Amp Kit! No code needed — discount applies automatically at checkout.
Select your other item
See all 5 special offers

Sundown Audio SAEv.4-1500.1D

1500W RMS Class D SAE Series Monoblock Car Amplifier with Wired Remote Control (SAEv.4-1500D)

SAEv.4-1500.1D big
Go to item page Right Arrow Icon of Right Arrow

Sundown Audio SAEv.4-1500.1D

1500W RMS Class D SAE Series Monoblock Car Amplifier with Wired Remote Control (SAEv.4-1500D)

• 450 watts x 1 channel @ 4 ohm
• 800 watts x 1 channel @ 2 ohm
• 1500 watts x 1 channel @ 1 ohm
• Total RMS Power: 1500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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

VIP Product Get $43.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $515.99
-17% $429.99

In stock

Add to Cart
See all 4 special offers

Hifonics HCC-3000.1D Colossus Classic

3000W Peak Class D Colossus Classic Series Monoblock Amplifier with Bass Remote

HCC-3000.1D big
Go to item page Right Arrow Icon of Right Arrow

Hifonics HCC-3000.1D Colossus Classic

3000W Peak Class D Colossus Classic Series Monoblock Amplifier with Bass Remote

• 750 watts x 1 channel @ 4 ohm
• 1500 watts x 1 channel @ 2 ohm
• 3000 watts x 1 channel @ 1 ohm
• Total Power: 3000 watts
• Class D 1 ohm Stable Monoblock Amplifier

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $449.99
-44% $249.99

In stock

Add to Cart
Limited time!

DS18 SMD-2000.1D

2000W RMS Class D SMD Series Monoblock Car Amplifier with Bass Remote

SMD-2000.1D big
Go to item page Right Arrow Icon of Right Arrow

DS18 SMD-2000.1D

2000W RMS Class D SMD Series Monoblock Car Amplifier with Bass Remote

• 800 watts x 1 channel @ 4 ohm
• 1400 watts x 1 channel @ 2 ohm
• 2000 watts x 1 channel @ 1 ohm
• Total RMS Power: 2000 watts
• Class D 1 ohm Stable Monoblock Amplifier

Save 30% off an NVX XKIT02 Amp Kit at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $57.50 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$574.95

In stock.

Add to Cart
Available Deal
SMD-2000.1D main
Offer may end without notice
Continue Shopping Continue to checkout
Eligible items

Shop items below for 30% off up to $100 discount on Save 30% off an NVX Amp Kit!

NVX XKIT02

NVX XKIT02

$179.99

$125.99

$54 Savings!

Add to cart
See all 4 special offers
Limited time!

DS18 SMD-3000.1D

3000W RMS Class D SMD Series Monoblock Car Amplifier with Bass Remote, VM-1 Voltmeter, and Digital LED Lights

SMD-3000.1D big
Go to item page Right Arrow Icon of Right Arrow

DS18 SMD-3000.1D

3000W RMS Class D SMD Series Monoblock Car Amplifier with Bass Remote, VM-1 Voltmeter, and Digital LED Lights

• 1300 watts x 1 channel @ 4 ohm
• 2200 watts x 1 channel @ 2 ohm
• 3000 watts x 1 channel @ 1 ohm
• Total RMS Power: 3000 watts
• Class D 1 ohm Stable Monoblock Amplifier

Save 30% off an NVX XKIT02 Amp Kit at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $80.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
$799.95

In stock

Add to Cart
Available Deal
SMD-3000.1D main
Offer may end without notice
Continue Shopping Continue to checkout
Eligible items

Shop items below for 30% off up to $100 discount on Save 30% off an NVX Amp Kit!

NVX XKIT02

NVX XKIT02

$179.99

$125.99

$54 Savings!

Add to cart
See all 4 special offers

Rockford Fosgate Prime R2 R2-250X1

250W RMS Class D Prime Series Monoblock Car Amplifier

R2-250X1 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Prime R2 R2-250X1

250W RMS Class D Prime Series Monoblock Car Amplifier

• 150 watts x 1 channel @ 4 ohm
• 250 watts x 1 channel @ 2 ohm
• Total RMS Power: 250 watts
• Class D 2 ohm Stable Monoblock Amplifier

2+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $25.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

3
$249.99

In stock

Add to Cart
Continue to cart
Available Offers (2) for Rockford Fosgate Prime R2 R2-250X1
FREE Belva Amp Kit at Checkout!
Add both to cart
Save 30% on an NVX XKIT42 Amp Kit with Purchase! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT42 Amp Kit! No code needed — discount applies automatically at checkout.
Select your other item
Used from: $212.49
See all 6 special offers
Limited time!

Kicker LX850.1 (51LX8501)

1100W Peak (850W RMS) Class D LX-Series Monoblock Car Amplifier with Bass Remote

51LX8501 big
Go to item page Right Arrow Icon of Right Arrow

Kicker LX850.1 (51LX8501)

1100W Peak (850W RMS) Class D LX-Series Monoblock Car Amplifier with Bass Remote

• 300 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• 850 watts x 1 channel @ 1 ohm
• Total RMS Power: 850 watts
• Class D 1 ohm Stable Monoblock Amplifier

Save 30% off an NVX XKIT02 Amp Kit at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $45.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $479.99
-6% $449.99

In stock

Add to Cart
Available Deal
51LX8501 main
Offer may end without notice
Continue Shopping Continue to checkout
Eligible items

Shop items below for 30% off up to $100 discount on Save 30% off an NVX Amp Kit!

NVX XKIT02

NVX XKIT02

$179.99

$125.99

$54 Savings!

Add to cart
See all 4 special offers

JL Audio MX500/1

500W RMS MX Series Class-D Monoblock Marine and Powersports Amplifier

MX500/1 big
Go to item page Right Arrow Icon of Right Arrow

JL Audio MX500/1

500W RMS MX Series Class-D Monoblock Marine and Powersports Amplifier

• 300 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

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

VIP Product Get $53.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

5
$529.99

In stock

Only 1 Left!

Add to Cart
Used from: $476.99

• 300 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

Limited time!

Kenwood KAC-M5001

600W Peak (300W RMS) Class D M Series Monoblock Marine and Powersports Amplifier with Bass Remote

KAC-M5001 big
Go to item page Right Arrow Icon of Right Arrow

Kenwood KAC-M5001

600W Peak (300W RMS) Class D M Series Monoblock Marine and Powersports Amplifier with Bass Remote

• 200 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable Monoblock Amplifier

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 $300.00
Save $171.00
-57% $129.00

In stock

Add to Cart

• 200 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable Monoblock Amplifier

JL Audio XDM1000/1

1000W RMS Class D XDM Series Monoblock Car and Marine Amplifier

XDM1000/1 big
Go to item page Right Arrow Icon of Right Arrow

JL Audio XDM1000/1

1000W RMS Class D XDM Series Monoblock Car and Marine Amplifier

• 600 watts x 1 channel @ 4 ohm
• 1000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier

2+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $83.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$829.99

In stock

Only 2 Left!

Add to Cart
Continue to cart
Available Offers (2) for JL Audio XDM1000/1
FREE NVX Amp Kit at Checkout!
Add both to cart
Save 30% on an NVX XKIT42 Amp Kit with Purchase! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT42 Amp Kit! No code needed — discount applies automatically at checkout.
Select your other item
Used from: $705.49
See all 4 special offers
Limited time!

DS18 SMD-8500.1D

8500W RMS Class D SMD Series Monoblock Car Amplifier with Bass Remote, VM-1 Voltmeter, and Digital LED Lights

SMD-8500.1D big
Go to item page Right Arrow Icon of Right Arrow

DS18 SMD-8500.1D

8500W RMS Class D SMD Series Monoblock Car Amplifier with Bass Remote, VM-1 Voltmeter, and Digital LED Lights

• 3300 watts x 1 channel @ 4 ohm
• 5700 watts x 1 channel @ 2 ohm
• 8500 watts x 1 channel @ 1 ohm
• Total RMS Power: 8500 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Wired bass level remote control included
• IR Remote Control for LED patterns and colors included

Save 30% off an NVX XKIT02 Amp Kit at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $170.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$1,699.95

In stock

Only 1 Left!

Add to Cart
Available Deal
SMD-8500.1D main
Offer may end without notice
Continue Shopping Continue to checkout
Eligible items

Shop items below for 30% off up to $100 discount on Save 30% off an NVX Amp Kit!

NVX XKIT02

NVX XKIT02

$179.99

$125.99

$54 Savings!

Add to cart
Used from: $1,444.96
See all 4 special offers
Limited time!

Orion HCCA3000.1DSPLX

3000W RMS Class D HCCA Series Monoblock Car Amplifier with Bass Remote

HCCA3000.1DSPLX big
Go to item page Right Arrow Icon of Right Arrow

Orion HCCA3000.1DSPLX

3000W RMS Class D HCCA Series Monoblock Car Amplifier with Bass Remote

• 1350 watts x 1 channel @ 4 ohm
• 2100 watts x 1 channel @ 2 ohm
• 3000 watts x 1 channel @ 1 ohm
• Total RMS Power: 3000 watts
• Class D 1 ohm Stable Monoblock Amplifier

Save 30% off an NVX XKIT02 Amp Kit at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $80.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$799.95

In stock

Add to Cart
Available Deal
HCCA3000.1DSPLX main
Offer may end without notice
Continue Shopping Continue to checkout
Eligible items

Shop items below for 30% off up to $100 discount on Save 30% off an NVX Amp Kit!

NVX XKIT02

NVX XKIT02

$179.99

$125.99

$54 Savings!

Add to cart
Limited time!

JL Audio VX600/1i

600W RMS Class D VXi Series Monoblock Car Amplifier with Built-in DSP

VX600/1i big
Go to item page Right Arrow Icon of Right Arrow

JL Audio VX600/1i

600W RMS Class D VXi Series Monoblock Car Amplifier with Built-in DSP

• 400 watts x 1 channel @ 4 ohm
• 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes integrated DSP

2+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $95.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $1049.99
Save $100.00
-10% $949.99

In stock

Only 3 Left!

Add to Cart
Continue to cart
Available Offers (2) for JL Audio VX600/1i
FREE NVX Amp Kit at Checkout!
Add both to cart
Save 30% on an NVX XKIT42 Amp Kit with Purchase! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT42 Amp Kit! No code needed — discount applies automatically at checkout.
Select your other item
See all 5 special offers
Prev 3 4 5 6 7 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?
    FAQ for Monoblock Sub Amplifiers in 2019 X4

    Q: Can I upgrade or change the Monoblock Sub Amplifiers in 2019 BMW X4?

    A: Yes this page includes all the best Monoblock Sub Amplifiers that work in your X4.

    Save up to 10 different vehicles in your garage
    Vehicle
    Store     Delete

    2019 BMW X4

    2004 Bentley Continental

    2012 Nissan Armada

    1982 Subaru Brat

    2021 Toyota Highlander

    2011 MINI Countryman

    2009 BMW M3

    2015 Dodge Ram ProMaster 3500

    2003 GMC Envoy XL

    1981 Datsun 510

    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 2019 X4
    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.
    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