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

1980 Porsche 928

Change vehicle | Remove vehicle

Use our shopping filters to find the right 2/3/4-channel amp to power upgraded speakers properly.

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

Amps for Adding Speakers for 1980 Porsche 928

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
Product Fitment Type
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.
Punch Series (32)
Machete Series (19)
V Series (18)
XDM Series (15)
Power Series (14)
Prime Series (13)
Hydro Series (12)
CVP Series (11)
FRP Series (9)
SXE Series (9)
VXi Series (9)
Gen-X (8)
MVi Series (7)
Reference Series (7)
BX Series (6)
Club Series (6)
eXcelon Series (6)
Ground Pounder Series (6)
KXM Series (6)
M2 Series (6)
Marine V Series (6)
Nautic Series (6)
RD Series (6)
SMD Series (6)
Elite Series (5)
HED Series (5)
MUD Series (5)
N Series (5)
Stroker Pro Series (5)
SYN-DX Series (5)
Thunder Series (5)
VEGA Series (5)
Venezia Series (5)
Apocalypse Sport Series (4)
Brutus BG Series (4)
CRA Series (4)
CX Series (4)
DSP Series (4)
HCP Series (4)
HEX Series (4)
iON Series (4)
JA Series (4)
KM Series (4)
MA Series (4)
Mean Machine Series (4)
Micro Series (4)
R-Series (4)
SAE Series (4)
SALT Series (4)
SFB Series (4)
Stealth Bomber Series (4)
Stroker RPM Series (4)
V-Drive Series (4)
XED Series (4)
ACX Series (3)
AP Series (3)
Apex Series (3)
Apocalypse Atom Pro Series (3)
Bomber Series (3)
Brutus BRL Series (3)
D Series (3)
Diamond Elite Series (3)
Discus Series (3)
DXM Series (3)
Epic Series (3)
GM Series (3)
HD Series (3)
HTM Series (3)
JD Series (3)
Kappa Perfect Series (3)
LX Series (3)
M Series (3)
Marine Series (3)
MX Series (3)
N-Series (3)
NXL Series (3)
Premium Pro Series (3)
PS Series (3)
Rebel Series (3)
S Series (3)
Sinister Series (3)
Stroker Series (3)
Terminator Series (3)
Trident Series (3)
X Series (3)
Zeus Series (3)
ZR Series (3)
Altitude Series (2)
Buran Series (2)
COLOSSUS Mini Series (2)
COLOSSUS Series (2)
Compact Mean Machine Series (2)
Competition Series (2)
DB Series (2)
DMD Series (2)
DRVN Series (2)
Edge Series (2)
Excelon Motorsports Series (2)
Excelon Reference Series (2)
Formula Series (2)
Godfather Series (2)
Hooligan Series (2)
HRPM Series (2)
HXM Series (2)
LC Series (2)
M5 Series (2)
MDX Series (2)
MHD Series (2)
MicroV2 Series (2)
Power Pack Series (2)
Punch BR Series (2)
PXA Series (2)
QS Series (2)
SAM Series (2)
Signature Series (2)
SPL Show Series (2)
Stage GT Series (2)
Status Series (2)
Stealth Mini Series (2)
VFL Series (2)
WET Series (2)
ACM Series (1)
Alpha Series (1)
Atom Series (1)
CVPRO Series (1)
DC Series (1)
EV Series (1)
FX Series (1)
GT Series (1)
HCCA Series (1)
HMS Series (1)
HMP Series (1)
HTX Series (1)
Key Series (1)
KPX Series (1)
Micro8U Series (1)
Mille Pro Series (1)
MINI BANG Series (1)
Mini Series (1)
MotorSport Series (1)
Performance Series (1)
Picasso-Nano Series (1)
PowerZone 2 Series (1)
Primo Series (1)
Primus Series (1)
PXE Series (1)
Q-Series (1)
RPM Series (1)
RTX Series (1)
Smash Series (1)
SPL (1)
SPX Series (1)
Stealth STX Series (1)
VFL Comp Series (1)
VFL Stealth Series (1)
Warhorse Series (1)
XC-Series (1)
XFL Series (1)
XQ Series (1)
ZXI 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

Hifonics HCM-800.4D with Belva 4 Gauge Amp Kit

800W Peak Colossus Mini Series Class-D 4-Channel Amplifier with Bass Remote

HCM8004D_BAK44 big
Go to item page Right Arrow Icon of Right Arrow

Hifonics HCM-800.4D with Belva 4 Gauge Amp Kit

800W Peak Colossus Mini Series Class-D 4-Channel Amplifier with Bass Remote

• 4 x 100 @ 4 ohm
• 4 x 200 @ 2 ohm
• Bridged: 2 x 400 @ 4 ohm
• Total Peak Power: 800W
• Class D 2 ohm Stable 4-Channel Amplifier
• 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

61
List price $529.98
-53% $249.99

In stock

Add to Cart

• 4 x 100 @ 4 ohm
• 4 x 200 @ 2 ohm
• Bridged: 2 x 400 @ 4 ohm
• Total Peak Power: 800W
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Rockford Fosgate Power TM400X4ad + Free $50 Gift Card

400W Power Series Class-AD Marine 4-Channel Amplifier

SonicElectronix-50-Gift-Card,TM400X4ad big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Power TM400X4ad + Free $50 Gift Card

400W Power Series Class-AD Marine 4-Channel Amplifier

• RMS: 100 watts x 4 chan. @ 4 ohm, 100 watts x 4 chan. @ 2 ohm, 200 watts x 2 chan. @ 4 ohm Bridged
• CEA-2006 Compliant Amplifier
• Rockford Fosgate 4/2 Ohm muti-impedance Constant Power technology
•Differential inputs with high level auto turn-on feature
• C.L.E.A.N. input/output clip detection and indicator LEDs
• 4-layer 2oz. copper circuit board with 2-part epoxy coating

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

18
List price $679.99
-7% $629.99

In stock

Add to Cart

• RMS: 100 watts x 4 chan. @ 4 ohm, 100 watts x 4 chan. @ 2 ohm, 200 watts x 2 chan. @ 4 ohm Bridged
• CEA-2006 Compliant Amplifier
• Rockford Fosgate 4/2 Ohm muti-impedance Constant Power technology
•Differential inputs with high level auto turn-on feature
• C.L.E.A.N. input/output clip detection and indicator LEDs
• 4-layer 2oz. copper circuit board with 2-part epoxy coating

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

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

HXM8002D_XKIT42 big
Go to item page Right Arrow Icon of Right Arrow

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

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

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

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

124
List price $643.98
-10% $576.98

In stock

Only 2 Left!

Add to Cart

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

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

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

PM500X2, XKIT42 big
Go to item page Right Arrow Icon of Right Arrow

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

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

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

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 $693.98
-17% $577.49

In stock

Only 3 Left!

Add to Cart

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

Crunch SA-1100.2 with Belva 4 Gauge Amp Kit

1100 Watt Smash Series Class A/B 2 Channel Amplifier

SA11002_BAK42 big
Go to item page Right Arrow Icon of Right Arrow

Crunch SA-1100.2 with Belva 4 Gauge Amp Kit

1100 Watt Smash Series Class A/B 2 Channel Amplifier

• RMS Power: 30W x 2 @ 4 ohm, 35W x 2 @ 2 ohm
• Total Peak Power: 1100W
• CEA-2006 Compliant/Preamp Outputs/LPF
• Frequency Response: 10Hz-22kHz
• 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

169
List price $149.98
-36% $96.23

Available

Ships in 10-14 days

Add to Cart

• RMS Power: 30W x 2 @ 4 ohm, 35W x 2 @ 2 ohm
• Total Peak Power: 1100W
• CEA-2006 Compliant/Preamp Outputs/LPF
• Frequency Response: 10Hz-22kHz
• Includes Amplifier Wiring Kit

Rockford Fosgate Punch PM600X4 + FREE $100 Gift Card

600W 4-Channel Punch Series Class AB Marine Amplifier

PM600X4, 100EGIFT big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Punch PM600X4 + FREE $100 Gift Card

600W 4-Channel Punch Series Class AB Marine Amplifier

• RMS: 75W x 4 @ 4 ohm, 150W x 4 @ 2 ohm, Bridged 300W x 2 @ 4ohm
• 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

5
List price $749.99
-13% $649.99

In stock

Add to Cart

• RMS: 75W x 4 @ 4 ohm, 150W x 4 @ 2 ohm, Bridged 300W x 2 @ 4ohm
• 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

Lowest price in 30 days

Deaf Bonce Apocalypse ASA 1500.2 with NVX 1/0 Gauge Amp Kit

1500W RMS Class D Apocalypse Sport Series 2-Channel Car Amplifier

ASA15002_XKIT02 big
Go to item page Right Arrow Icon of Right Arrow

Deaf Bonce Apocalypse ASA 1500.2 with NVX 1/0 Gauge Amp Kit

1500W RMS Class D Apocalypse Sport Series 2-Channel Car Amplifier

• 550 watts x 2 channel @ 4 ohm
• 890 watts x 2 channel @ 2 ohm
• 1500 watts x 2 channel @ 1 ohm
• Bridged: 1780 watts x 1 channel @ 4 ohm
• Bridged: 3020 watts @ 2 ohm
• Total RMS Power: 1500 watts
• Class D 1 ohm Stable 2-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

42
List price $677.89
-14% $579.87

In stock

Only 3 Left!

Add to Cart

• 550 watts x 2 channel @ 4 ohm
• 890 watts x 2 channel @ 2 ohm
• 1500 watts x 2 channel @ 1 ohm
• Bridged: 1780 watts x 1 channel @ 4 ohm
• Bridged: 3020 watts @ 2 ohm
• Total RMS Power: 1500 watts
• Class D 1 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

DS18 ION1600.4D with NVX 4 Gauge Amp Kit

4800W Peak (1600W RMS) Class D ION Series 4 Channel Car Amplifier

ION16004D_XKIT44 big
Go to item page Right Arrow Icon of Right Arrow

DS18 ION1600.4D with NVX 4 Gauge Amp Kit

4800W Peak (1600W RMS) Class D ION Series 4 Channel Car Amplifier

• 240 watts x 4 channel @ 4 ohm
• 400 watts x 4 channel @ 2 ohm
• Bridged: 800 watts x 2 channel @ 4 ohm
• Total RMS Power: 1600 watts
• Class D 2 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

81
List price $575.94
-12% $505.36

In stock

Add to Cart

• 240 watts x 4 channel @ 4 ohm
• 400 watts x 4 channel @ 2 ohm
• Bridged: 800 watts x 2 channel @ 4 ohm
• Total RMS Power: 1600 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Cerwin Vega B52 with Belva 4 Gauge Amp Kit

1000W Peak Bomber Series 2-Channel Class D Amplifier

B52, BAK42 big
Go to item page Right Arrow Icon of Right Arrow

Cerwin Vega B52 with Belva 4 Gauge Amp Kit

1000W Peak Bomber Series 2-Channel Class D Amplifier

• RMS: 200 Watts x 2 @ 4 ohm, 250 Watts x 2 @ 2 ohm, Bridged: 500 Watts x 1 @ 4 ohm
• Total Peak Power: 1000 Watts
• Class D IR Chipset with DirectFET Power Mosfet Output
• Wired remote bass level control included
• Ultra Compact High-Density Aluminum Alloy Chassis
• Dimensions: 4.02" W x 6.61" L x 1.40" 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

170
List price $455.98
-28% $329.99

In stock

Add to Cart

• RMS: 200 Watts x 2 @ 4 ohm, 250 Watts x 2 @ 2 ohm, Bridged: 500 Watts x 1 @ 4 ohm
• Total Peak Power: 1000 Watts
• Class D IR Chipset with DirectFET Power Mosfet Output
• Wired remote bass level control included
• Ultra Compact High-Density Aluminum Alloy Chassis
• Dimensions: 4.02" W x 6.61" L x 1.40" H

Rockford Fosgate Power TM400X4ad with Amplifier Wiring Kit

400W Power Series Class-AD Marine 4-Channel Amplifier

TM400X4ad, XKIT84 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Power TM400X4ad with Amplifier Wiring Kit

400W Power Series Class-AD Marine 4-Channel Amplifier

• RMS: 100 watts x 4 chan. @ 4 ohm, 100 watts x 4 chan. @ 2 ohm, 200 watts x 2 chan. @ 4 ohm Bridged
• CEA-2006 Compliant Amplifier
• Rockford Fosgate 4/2 Ohm muti-impedance Constant Power technology
•Differential inputs with high level auto turn-on feature
• C.L.E.A.N. input/output clip detection and indicator LEDs
• 4-layer 2oz. copper circuit board with 2-part epoxy coating

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

43
List price $737.98
-6% $694.99

In stock

Add to Cart

• RMS: 100 watts x 4 chan. @ 4 ohm, 100 watts x 4 chan. @ 2 ohm, 200 watts x 2 chan. @ 4 ohm Bridged
• CEA-2006 Compliant Amplifier
• Rockford Fosgate 4/2 Ohm muti-impedance Constant Power technology
•Differential inputs with high level auto turn-on feature
• C.L.E.A.N. input/output clip detection and indicator LEDs
• 4-layer 2oz. copper circuit board with 2-part epoxy coating

Deaf Bonce MFA 4.220 with Belva 4 Gauge Amp Kit

1320W RMS Machete Series Class D 4-Channel Car Amplifier

MFA4220_BAK44 big
Go to item page Right Arrow Icon of Right Arrow

Deaf Bonce MFA 4.220 with Belva 4 Gauge Amp Kit

1320W RMS Machete Series Class D 4-Channel Car Amplifier

• 220 watts x 4 channel @ 4 ohm
• 330 watts x 4 channel @ 2 ohm
• Bridged: 660 watts x 2 channel @ 4 ohm
• Total RMS Power: 1320 watts
• Class D 2 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

61
List price $369.89
-12% $324.89

In stock

Add to Cart

• 220 watts x 4 channel @ 4 ohm
• 330 watts x 4 channel @ 2 ohm
• Bridged: 660 watts x 2 channel @ 4 ohm
• Total RMS Power: 1320 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Fusion SG-DA51600 with NVX 1/0 Gauge Amp Kit

1600W Peak (850W RMS) Signature Series Class-D 5-Channel Marine Amplifier with Bass Remote

010-01968-00_XKIT06 big
Go to item page Right Arrow Icon of Right Arrow

Fusion SG-DA51600 with NVX 1/0 Gauge Amp Kit

1600W Peak (850W RMS) Signature Series Class-D 5-Channel Marine Amplifier with Bass Remote

• 80 watts x 4 channel + 250 watts x 1 channel @ 4 ohm
• 130 watts x 4 channel + 330 watts x 1 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm + 330 watts x 1 channel @ 2 ohm
• Total RMS Power: 850 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

69
List price $907.97
-12% $797.72

In stock

Only 3 Left!

Add to Cart

• 80 watts x 4 channel + 250 watts x 1 channel @ 4 ohm
• 130 watts x 4 channel + 330 watts x 1 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm + 330 watts x 1 channel @ 2 ohm
• Total RMS Power: 850 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

DS18 NVY-IPX7.4 with NVX 8 Gauge Amp Kit

1440W Peak (700W RMS) Class D 4-Channel IP67 Waterproof Marine and Powersports Amplifier with Input Selector

NVYIPX74_XKIT84 big
Go to item page Right Arrow Icon of Right Arrow

DS18 NVY-IPX7.4 with NVX 8 Gauge Amp Kit

1440W Peak (700W RMS) Class D 4-Channel IP67 Waterproof Marine and Powersports Amplifier with Input Selector

• 120 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• Bridged: 350 watts x 2 channel @ 4 ohm
• Total RMS Power: 700 watts
• IP67 waterproof rating, with UV, salt and fog protection
• Class D 2 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 $807.99
-6% $755.99

In stock

Only 2 Left!

Add to Cart

• 120 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• Bridged: 350 watts x 2 channel @ 4 ohm
• Total RMS Power: 700 watts
• IP67 waterproof rating, with UV, salt and fog protection
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

MTX WET75.4 with NVX 4 Gauge Amp Kit

200W Peak (100W RMS) Wet Series 4-Channel All Weather Class A/B Marine/Powersports Compact Amplifier

WET754_XKIT44 big
Go to item page Right Arrow Icon of Right Arrow

MTX WET75.4 with NVX 4 Gauge Amp Kit

200W Peak (100W RMS) Wet Series 4-Channel All Weather Class A/B Marine/Powersports Compact Amplifier

• RMS Power: 75W x 4 @ 4 ohm, 100W x 4 @ 2 ohm
• Total Peak Power: 400W
• Plastic Cover Over Control-Adjustments
• Dimensions: 12.15"W x 6.40"L x 2.25"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 $515.94
-19% $419.94

In stock

Only 1 Left!

Add to Cart

• RMS Power: 75W x 4 @ 4 ohm, 100W x 4 @ 2 ohm
• Total Peak Power: 400W
• Plastic Cover Over Control-Adjustments
• Dimensions: 12.15"W x 6.40"L x 2.25"H
• Includes Amplifier Wiring Kit

Lowest price in 30 days

Rockford Fosgate PBR400X4D with NVX 8 Gauge Amp Kit

400W RMS Punch Series Class-D 4-Channel Amplifier

PBR400X4D_XKIT84 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate PBR400X4D with NVX 8 Gauge Amp Kit

400W RMS Punch Series Class-D 4-Channel Amplifier

• 50 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• 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

42
List price $417.98
-19% $339.98

In stock

Add to Cart

• 50 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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

NVX XQA16005 with NVX 1/0 Gauge Amp Kit

1600W RMS XQ-Series SQ Hi-Res Class D 5-Channel Amplifier with X-Boost

XQA16005_XKIT06 big
Go to item page Right Arrow Icon of Right Arrow

NVX XQA16005 with NVX 1/0 Gauge Amp Kit

1600W RMS XQ-Series SQ Hi-Res Class D 5-Channel Amplifier with X-Boost

• 125 watts x 4 channel + 300W x1 @ 4 ohm
• 200 watts x 4 channel + 500W x 1 @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm + 800W @ 1 ohm
• Total RMS Power: 1600 watts
• Class D 1 ohm Stable 5-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

71
List price $977.97
-54% $449.99

In stock

Add to Cart

• 125 watts x 4 channel + 300W x1 @ 4 ohm
• 200 watts x 4 channel + 500W x 1 @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm + 800W @ 1 ohm
• Total RMS Power: 1600 watts
• Class D 1 ohm Stable 5-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Lowest price in 30 days

Rockford Fosgate PBR400X4D with Amplifier Wiring Kit

400W 4 Channel Punch Series Class D Amplifier + Belva 8 Gauge Amp Wiring Kit

PBR400X4D, BAK84 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate PBR400X4D with Amplifier Wiring Kit

400W 4 Channel Punch Series Class D Amplifier + Belva 8 Gauge Amp Wiring Kit

• 50 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 400 Watts
• CEA-2006 Compliant
• C.L.E.A.N. input/output clip detection and indicator LEDs
• Compact design for stealth installations
• 4.25"W x 1.53"H x 6.75"D

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

40
List price $369.98
-24% $279.99

In stock

Add to Cart

• 50 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 400 Watts
• CEA-2006 Compliant
• C.L.E.A.N. input/output clip detection and indicator LEDs
• Compact design for stealth installations
• 4.25"W x 1.53"H x 6.75"D

Crunch PZ2-2030.2D with Amplifier Wiring Kit

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

PZ2-2030.2D, BAK42 big
Go to item page Right Arrow Icon of Right Arrow

Crunch PZ2-2030.2D with Amplifier Wiring Kit

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

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

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

169
List price $219.98
-45% $119.99

In stock

Add to Cart

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

Prev 26 27 28 29 30 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 Multi-channel Amplifiers for Adding Speakers in 1980 928

    Q: Can I upgrade or change the Multi-channel Amplifiers for Adding Speakers in 1980 Porsche 928?

    A: Yes this page includes all the best Multi-channel Amplifiers for Adding Speakers that work in your 928.

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

    1980 Porsche 928

    1997 BMW 318ti

    1984 BMW 533i

    1986 Cadillac DeVille

    1990 Nissan Maxima

    1987 Chevrolet Spectrum

    2006 Mercury Mariner

    2008 Buick LaCrosse

    2000 Mazda B4000

    1992 Cadillac Eldorado

    Vehicle
    Store     Delete

    2019 Can-Am Defender MAX HD8

    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 1980 928
    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