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

2003 Subaru Forester

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

Amps for Adding Speakers for 2003 Subaru Forester

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 (17)
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)
Marine V Series (7)
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)
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)
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)
N-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

MTX TN8005 (TN800.5) with NVX 4 Gauge Amp Kit

800W RMS Class D Terminator Series 5-Channel Full Range Amplifier with Remote Bass Control

TN8005_XKIT46 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

MTX TN8005 (TN800.5) with NVX 4 Gauge Amp Kit

800W RMS Class D Terminator Series 5-Channel Full Range Amplifier with Remote Bass Control

• 50 watts x 4 channel + 300 watts x 1 channel @ 4 ohm
• 75 watts x 4 channel + 500 watts x 1 channel @ 2 ohm
• Bridged: 150 watts x 2 channel @ 4 ohm + 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 5-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

45
List price $679.94
-19% $549.95
Add to Cart

• 50 watts x 4 channel + 300 watts x 1 channel @ 4 ohm
• 75 watts x 4 channel + 500 watts x 1 channel @ 2 ohm
• Bridged: 150 watts x 2 channel @ 4 ohm + 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 5-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Diamond Audio MICRO5V2 with NVX 8 Gauge Amp Kit

950W RMS Micro Series 5-Channel Full Range Class D Amplifier

MICRO5V2_XKIT86 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Diamond Audio MICRO5V2 with NVX 8 Gauge Amp Kit

950W RMS Micro Series 5-Channel Full Range Class D Amplifier

• 80 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 950 watts
• Ultra-compact, high density aluminum alloy chassis provides superior thermal stability
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

82
List price $846.97
-29% $599.99
Add to Cart

• 80 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 950 watts
• Ultra-compact, high density aluminum alloy chassis provides superior thermal stability
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

Rockford Fosgate M2-750X5 with Amplifier Wiring Kit

750 Watt 5-channel marine amplifier + NVX XKIT46

M2-750X5, XKIT46 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate M2-750X5 with Amplifier Wiring Kit

750 Watt 5-channel marine amplifier + NVX XKIT46

• 50 Watts x 4 + 200 Watts x 1 @ 4 ohm
• 100 Watts x 4 + 350 Watts x 1 @ 2 ohm
• 200 Watts x 2 + N/A @ 4 ohm Bridged/Mono
• 5-Channel Amplifer
• Element Ready™ design protects against outdoor exposure
• Top Mounted Control Panel

Save 15% Off Package Deals at Checkout!

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

46
List price $749.98
-15% $634.98
Add to Cart

• 50 Watts x 4 + 200 Watts x 1 @ 4 ohm
• 100 Watts x 4 + 350 Watts x 1 @ 2 ohm
• 200 Watts x 2 + N/A @ 4 ohm Bridged/Mono
• 5-Channel Amplifer
• Element Ready™ design protects against outdoor exposure
• Top Mounted Control Panel

AudioControl D-6.1200 Amplifier + High Quality NVX Amp Kit

1200W RMS 4 ohm Stable 6-Channel Class-D Amplifier w/ Digital Signal Processing

D-6.1200, XKIT46 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

AudioControl D-6.1200 Amplifier + High Quality NVX Amp Kit

1200W RMS 4 ohm Stable 6-Channel Class-D Amplifier w/ Digital Signal Processing

• 125 Watts RMS x 6 @ 4 ohm
• 200 Watts RMS x 6 @ 2 ohm
• 400 Watts RMS x 3 @ Bridged
• Total Peak Power: 1200 Watts
• CEA-2006 Compliant/Preamp Outputs/LPF
• AccuBASS circruity for improved bass response
• GTO Signal Sensing Turn On

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

47
List price $3118.99
-68% $991.64
Notify Me

• 125 Watts RMS x 6 @ 4 ohm
• 200 Watts RMS x 6 @ 2 ohm
• 400 Watts RMS x 3 @ Bridged
• Total Peak Power: 1200 Watts
• CEA-2006 Compliant/Preamp Outputs/LPF
• AccuBASS circruity for improved bass response
• GTO Signal Sensing Turn On

Cerwin Vega CVP1200.4D + NVX XFLOC4 Line-Output-Converter + Amp Kit

4-Channel Class D 1-Ohm Stable Amplifier + NVX 4-Channel L.O.C. + 8 Gauge Amp Kit

CVP1200.4D, XFLOC4, BAK84 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Cerwin Vega CVP1200.4D + NVX XFLOC4 Line-Output-Converter + Amp Kit

4-Channel Class D 1-Ohm Stable Amplifier + NVX 4-Channel L.O.C. + 8 Gauge Amp Kit

• 75 Watts RMS x 4 @ 2 ohm
• 55 Watts RMS x 4 @ 4 ohm
• Total Peak Power: 1200 Watts
• Class-D Circuitry
• 2-Ohm Stereo, 4-Ohm Bridged Full Range Operation
• Direct Short, Thermal, & Overload Circuits Protect Amplifier

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

73
List price $239.72
-30% $168.13
Add to Cart

• 75 Watts RMS x 4 @ 2 ohm
• 55 Watts RMS x 4 @ 4 ohm
• Total Peak Power: 1200 Watts
• Class-D Circuitry
• 2-Ohm Stereo, 4-Ohm Bridged Full Range Operation
• Direct Short, Thermal, & Overload Circuits Protect Amplifier

Cerwin Vega CVP1600.4D + NVX Line-Output-Converter + Amp Kit

CVP Series 4-Channel Class-D Amplifier + NVX 4-Channel L.O.C. + 8 Gauge Amp Kit

CVP1600.4D, XFLOC4, BAK84 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Cerwin Vega CVP1600.4D + NVX Line-Output-Converter + Amp Kit

CVP Series 4-Channel Class-D Amplifier + NVX 4-Channel L.O.C. + 8 Gauge Amp Kit

• CVP Series 2-Channel Amplifier
• Class-D Circuitry
• 2-Ohm Stereo, 4-Ohm Bridged Full Range Operation
• Direct Short, Thermal, & Overload Circuits Protect Amplifier
• Variable 12dB High, Low, & Subsonic Crossovers

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

74
List price $287.72
-27% $209.47
Add to Cart

• CVP Series 2-Channel Amplifier
• Class-D Circuitry
• 2-Ohm Stereo, 4-Ohm Bridged Full Range Operation
• Direct Short, Thermal, & Overload Circuits Protect Amplifier
• Variable 12dB High, Low, & Subsonic Crossovers

Rockford Fosgate T1000-4AD + Free NVX XFLOC4 Line-Output-Converter and Amp Kit

1000W 4-Channel Power Amplifier + NVX 4-Channel L.O.C + 4 Gauge Amp Kit

T1000-4AD, XFLOC4, BAK44 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate T1000-4AD + Free NVX XFLOC4 Line-Output-Converter and Amp Kit

1000W 4-Channel Power Amplifier + NVX 4-Channel L.O.C + 4 Gauge Amp Kit

• 1000W RMS
• 250W x 4-Chan @ 4 Ohm
• NOMAD Real Time Computer Protection
• 50-500 Hz LP/AP/HP Crossovers
• Constant Power

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

72
List price $1203.72
-9% $1,099.99
Notify Me

• 1000W RMS
• 250W x 4-Chan @ 4 Ohm
• NOMAD Real Time Computer Protection
• 50-500 Hz LP/AP/HP Crossovers
• Constant Power

Cerwin Vega CVP1200.4D Amplifier with Belva 8 Gauge Amp Kit

CVP Series 4-Channel Class D 1-Ohm Stable Amplifier + Belva 8 Gauge Amp Kit

CVP1200.4D, BAK84 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Cerwin Vega CVP1200.4D Amplifier with Belva 8 Gauge Amp Kit

CVP Series 4-Channel Class D 1-Ohm Stable Amplifier + Belva 8 Gauge Amp Kit

• 75 Watts RMS x 4 @ 2 ohm
• 55 Watts RMS x 4 @ 4 ohm
• Total Peak Power: 1200 Watts
• Class-D Circuitry
• 2-Ohm Stereo, 4-Ohm Bridged Full Range Operation
• Direct Short, Thermal, & Overload Circuits Protect Amplifier

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

42
List price $215.98
-32% $146.14
Add to Cart

• 75 Watts RMS x 4 @ 2 ohm
• 55 Watts RMS x 4 @ 4 ohm
• Total Peak Power: 1200 Watts
• Class-D Circuitry
• 2-Ohm Stereo, 4-Ohm Bridged Full Range Operation
• Direct Short, Thermal, & Overload Circuits Protect Amplifier

Cerwin Vega CVP1600.4D with Belva 4 Gauge Amp Kit

1600W Peak (380W RMS) CVP Series Class-AB 4-Channel Amplifier

CVP16004D_BAK44 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Cerwin Vega CVP1600.4D with Belva 4 Gauge Amp Kit

1600W Peak (380W RMS) CVP Series Class-AB 4-Channel Amplifier

• 70 watts x 4 channel @ 4 ohm
• 90 watts x 4 channel @ 2 ohm
• Bridged: 190 watts x 2 channel @ 4 ohm
• Total RMS Power: 380 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Save 15% Off Package Deals at Checkout!

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

67
List price $283.98
-27% $207.48
Add to Cart

• 70 watts x 4 channel @ 4 ohm
• 90 watts x 4 channel @ 2 ohm
• Bridged: 190 watts x 2 channel @ 4 ohm
• Total RMS Power: 380 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Deaf Bonce Apocalypse Atom 500.2 Pro with Belva 4 Gauge Amp Kit

500W RMS Class D Apocalypse Atom Pro Series 2-Channel Car Amplifier

ATOM5002_BAK42 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Deaf Bonce Apocalypse Atom 500.2 Pro with Belva 4 Gauge Amp Kit

500W RMS Class D Apocalypse Atom Pro Series 2-Channel Car Amplifier

• 231 watts x 2 channel @ 4 ohm
• 390 watts x 2 channel @ 2 ohm
• 500 watts x 2 channel @ 1 ohm
• Bridged: 780 watts x 1 channel @ 4 ohm
• 1000 watts @ 2 ohm
• Total RMS Power: 500 watts
• Class D 1 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

169
List price $249.89
-14% $214.39
Add to Cart

• 231 watts x 2 channel @ 4 ohm
• 390 watts x 2 channel @ 2 ohm
• 500 watts x 2 channel @ 1 ohm
• Bridged: 780 watts x 1 channel @ 4 ohm
• 1000 watts @ 2 ohm
• Total RMS Power: 500 watts
• Class D 1 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

NVX NDA11005 with Amp Wiring Kit

2200W Peak (1100W RMS) N-Series Class-D 5-Channel Amplifier with NVX 4 Gauge Amplifier Wiring Kit

NDA11005_XKIT46 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

NVX NDA11005 with Amp Wiring Kit

2200W Peak (1100W RMS) N-Series Class-D 5-Channel Amplifier with NVX 4 Gauge Amplifier Wiring Kit

• 100 watts x 4 channel + 315 watts x 1 channel @ 4 ohm
• 150 watts x 4 channel + 500 watts x 1 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm + 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 1100 watts
• Class D 2 ohm Stable 5-Channel-Channel Amplifier

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

55
List price $503.98
-36% $324.98
Add to Cart

• 100 watts x 4 channel + 315 watts x 1 channel @ 4 ohm
• 150 watts x 4 channel + 500 watts x 1 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm + 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 1100 watts
• Class D 2 ohm Stable 5-Channel-Channel Amplifier

Lowest price in 30 days

DS18 SMD-500.4AB with NVX 1/0 Gauge Amp Kit

2000W RMS Class AB SMD Series 4 Channel Car Amplifier with Bass Remote

SMD5004AB_XKIT04 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

DS18 SMD-500.4AB with NVX 1/0 Gauge Amp Kit

2000W RMS Class AB SMD Series 4 Channel Car Amplifier with Bass Remote

• 300 watts x 4 channel @ 4 ohm
• 500 watts x 4 channel @ 2 ohm
• Bridged: 1000 watts x 2 channel @ 4 ohm
• Total RMS Power: 2000 watts
• Class A/B 1 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

85
List price $896.93
-12% $792.91
Add to Cart

• 300 watts x 4 channel @ 4 ohm
• 500 watts x 4 channel @ 2 ohm
• Bridged: 1000 watts x 2 channel @ 4 ohm
• Total RMS Power: 2000 watts
• Class A/B 1 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Lowest price in 30 days

Rockford Fosgate Punch PBR300X2 (Open Box, Great)

300W RMS Class BR Punch Series 2 Channel Car Amplifier

PBR300X2 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Punch PBR300X2 (Open Box, Great)

300W RMS Class BR Punch Series 2 Channel Car Amplifier

• 100 watts x 2 channel @ 4 ohm
• 150 watts x 2 channel @ 2 ohm
• Bridged: 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class BR 2 ohm Stable 2-Channel Amplifier

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

22
List price $279.99
-24% $212.49
Notify Me

• 100 watts x 2 channel @ 4 ohm
• 150 watts x 2 channel @ 2 ohm
• Bridged: 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class BR 2 ohm Stable 2-Channel Amplifier

Rockford Fosgate Power T1000-4AD (Open Box, Great)

1000W RMS Class AD Power Series 4 Channel Car Amplifier

T1000-4AD big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Power T1000-4AD (Open Box, Great)

1000W RMS Class AD Power Series 4 Channel Car Amplifier

• 250 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class AD 1 ohm Stable 4-Channel Amplifier

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

13
List price $1099.99
-15% $934.99
Notify Me

• 250 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class AD 1 ohm Stable 4-Channel Amplifier

Lowest price in 30 days

Rockford Fosgate Punch P1000X2 (Open Box, Great)

1000W RMS Class AB Punch Series 2 Channel Car Amplifier

P1000X2 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Punch P1000X2 (Open Box, Great)

1000W RMS Class AB Punch Series 2 Channel Car Amplifier

• 300 watts x 2 channel @ 4 ohm
• 500 watts x 2 channel @ 2 ohm
• Bridged: 1000 watts x 1 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class A/B 2 ohm Stable 2-Channel Amplifier

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

8
List price $549.99
-24% $416.49
Notify Me

• 300 watts x 2 channel @ 4 ohm
• 500 watts x 2 channel @ 2 ohm
• Bridged: 1000 watts x 1 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class A/B 2 ohm Stable 2-Channel Amplifier

Lowest price in 30 days

Rockford Fosgate P1000X5 - New (Damaged Packaging, Product A+)

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

P1000X5 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate P1000X5 - New (Damaged Packaging, Product A+)

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

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

7
List price $689.99
-20% $554.24
Notify Me

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

JL Audio XDM600/6 (Open Box, Great)

600W RMS Class D XMD Series 6 Channel Car and Marine Amplifier

XDM600/6 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

JL Audio XDM600/6 (Open Box, Great)

600W RMS Class D XMD Series 6 Channel Car and Marine Amplifier

• 75 watts x 6 channel @ 4 ohm
• 100 watts x 6 channel @ 2 ohm
• Bridged: 200 watts x 3 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 6-Channel Amplifier

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

3
List price $829.99
-15% $705.49
Add to Cart

• 75 watts x 6 channel @ 4 ohm
• 100 watts x 6 channel @ 2 ohm
• Bridged: 200 watts x 3 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 6-Channel Amplifier

Prev 10 11 12 13 14

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 2003 Forester

    Q: Can I upgrade or change the Multi-channel Amplifiers for Adding Speakers in 2003 Subaru Forester?

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

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

    2003 Subaru Forester

    2005 Lexus RX330

    2007 Jeep Compass

    2005 Mazda 6

    1964 Pontiac LeMans

    2007 Mercedes-Benz AMG E-Class

    2017 Lexus GS450h

    1994 Porsche 968

    1993 Mitsubishi Eclipse

    2018 Chrysler Pacifica

    Vehicle
    Store     Delete

    2018 Can-Am Defender MAX HD10 XT

    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 2003 Forester
    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