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2017 Subaru Forester

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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 Independance Day Sale

Amps for Adding Speakers for 2017 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.

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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 (31)
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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.
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JL Audio XDM1000/5

1000W RMS Class D XDM Series 5 Channel Car and Marine Amplifier

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JL Audio XDM1000/5

1000W RMS Class D XDM Series 5 Channel Car and Marine Amplifier

• 75 watts x 4 channel + 400 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 600 watts x 1 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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Infinity DSP6840 (DSP6840AM)

1000W Peak (480W RMS) Class D DSP Series 8 Channel Car Amplifier with Digital Signal Processing

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Infinity DSP6840 (DSP6840AM)

1000W Peak (480W RMS) Class D DSP Series 8 Channel Car Amplifier with Digital Signal Processing

• 40 watts x 8 channel @ 4 ohm
• 60 watts x 8 channel @ 2 ohm
• Total RMS Power: 480 watts
• Class D 2 ohm Stable 8-Channel Amplifier

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AudioControl A1100.5

1100W RMS Class D Altitude Series 5-Channel Car Amplifier with ParaBASS Control Knob

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AudioControl A1100.5

1100W RMS Class D Altitude Series 5-Channel Car Amplifier with ParaBASS Control Knob

• 90 watts x 4 channel + 400 watts x 1 channel @ 4 ohm
• 400 watts x 1 channel + 600 watts x 1 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm + 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 1100 watts
• Class D 4 ohm Stable 5-Channel-Channel Amplifier

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Kenwood KAC-D8105

1600W Peak (800W RMS) Class D D Series 5-Channel Car Amplifier

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Kenwood KAC-D8105

1600W Peak (800W RMS) Class D D Series 5-Channel Car Amplifier

• 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 + 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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Cerwin-Vega CVP800.2D

800W Peak (170W RMS) Class AB CVP Series 2-Channel Car Amplifier

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Cerwin-Vega CVP800.2D

800W Peak (170W RMS) Class AB CVP Series 2-Channel Car Amplifier

• 60 watts x 2 channel @ 4 ohm
• 85 watts x 2 channel @ 2 ohm
• Bridged: 180 watts x 1 channel @ 4 ohm
• Total RMS Power: 170 watts
• Class A/B 2 ohm Stable 2-Channel Amplifier

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JL Audio MV1000/5i

1000W RMS Class D MVi Series 5 Channel Marine Amplifier

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JL Audio MV1000/5i

1000W RMS Class D MVi Series 5 Channel Marine Amplifier

• 75 watts x 4 channel + 400 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 600 watts x 1 channel @ 2 ohm
• 700 watts x 1 channel @ 1 ohm (subwoofer output)
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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• 75 watts x 4 channel + 400 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 600 watts x 1 channel @ 2 ohm
• 700 watts x 1 channel @ 1 ohm (subwoofer output)
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable 5-Channel Amplifier

Limited time!

Stinger SPX700X4

700W RMS Class D SPX Series 4 Channel Marine and Powersports Amplifier

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Stinger SPX700X4

700W RMS Class D SPX Series 4 Channel Marine and Powersports Amplifier

• 125 watts x 4 channel @ 4 ohm
• 175 watts x 4 channel @ 2 ohm
• Bridged: 125 watts x 2 channel @ 4 ohm
• Total RMS Power: 700 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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• 125 watts x 4 channel @ 4 ohm
• 175 watts x 4 channel @ 2 ohm
• Bridged: 125 watts x 2 channel @ 4 ohm
• Total RMS Power: 700 watts
• Class D 2 ohm Stable 4-Channel Amplifier

MTX MUD100-4

800W Peak (400W RMS) Class D MUD Series 4 Channel Marine and Powersports Amplifier

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MTX MUD100-4

800W Peak (400W RMS) Class D MUD Series 4 Channel Marine and Powersports 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

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• 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

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Hifonics ZD-1350.4D Zeus Delta

1350W Peak Class D Zeus Delta Series 4 Channel Car Amplifier

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Hifonics ZD-1350.4D Zeus Delta

1350W Peak Class D Zeus Delta Series 4 Channel Car Amplifier

• 170 watts x 4 channel @ 4 ohm
• 335 watts x 4 channel @ 2 ohm
• Bridged: 675 watts x 2 channel @ 4 ohm
• Class D 2 ohm Stable 4-Channel Amplifier

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MTX MA400.4

400W RMS Class D MA Series 4-Channel Marine Amplifier

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MTX MA400.4

400W RMS Class D MA Series 4-Channel Marine 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

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• 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

Sundown Audio SALT-200.4

1400W RMS Class D SALT Series 4-Channel Full Range Car Amplifier

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Sundown Audio SALT-200.4

1400W RMS Class D SALT Series 4-Channel Full Range Car Amplifier

• 200 watts x 4 channel @ 4 ohm
• 325 watts x 4 channel @ 2 ohm
• Bridged: 700 watts x 2 channel @ 4 ohm
• Total RMS Power: 1400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Sundown Audio SAEv4-200.4

1200W RMS Class AB SAE Series 4-Channel Car Amplifier (SAEv.4-200.4)

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Sundown Audio SAEv4-200.4

1200W RMS Class AB SAE Series 4-Channel Car Amplifier (SAEv.4-200.4)

• 200 watts x 4 channel @ 4 ohm
• 300 watts x 4 channel @ 2 ohm
• Bridged: 600 watts x 2 channel @ 4 ohm
• Total RMS Power: 1200 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

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Infinity DSP4425 (INFDSP4425AM)

200W Peak (140W RMS) Class AB DSP Series 4 Channel Car Amplifier with Digital Signal Processing

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Infinity DSP4425 (INFDSP4425AM)

200W Peak (140W RMS) Class AB DSP Series 4 Channel Car Amplifier with Digital Signal Processing

• 25 watts x 4 channel @ 4 ohm
• 35 watts x 4 channel @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power: 140 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

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JL Audio XDM400/4 (Open Box, Great)

400W RMS XDM Series Class D 4 Channel Car/Marine Amplifier

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JL Audio XDM400/4 (Open Box, Great)

400W RMS XDM Series Class D 4 Channel Car/Marine Amplifier

• 75 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

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List price $679.99
-20% $543.99

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• 75 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

Infinity Kappa Perfect 3002A (INFPWSKP3002AAM)

750W Peak (300W RMS) Class D Kappa Series 2 Channel Powersports Amplifier

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Infinity Kappa Perfect 3002A (INFPWSKP3002AAM)

750W Peak (300W RMS) Class D Kappa Series 2 Channel Powersports 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 D 2 ohm Stable 2-Channel Amplifier

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List price $439.95
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Rockford Fosgate Power T400X4ad

400W RMS Class AD Power Series 4 Channel Car Amplifier

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Rockford Fosgate Power T400X4ad

400W RMS Class AD Power Series 4 Channel Car Amplifier

• 100 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 AD 2 ohm Stable 4-Channel Amplifier

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JL Audio XDM500/3

500W RMS Class D XDM Series 3 Channel Car and Marine Amplifier

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JL Audio XDM500/3

500W RMS Class D XDM Series 3 Channel Car and Marine Amplifier

• 75 watts x 2 channel + 180 watts x 1 channel @ 4 ohm
• 100 watts x 2 channel + 300 watts x 1 channel @ 2 ohm
• Bridged: 200 watts x 1 channel @ 4 ohm + 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 3-Channel Amplifier

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Orion HCCA1500.4

6000W Peak (1500W RMS) Class AB HCCA Series 4 Channel Car Amplifier

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Orion HCCA1500.4

6000W Peak (1500W RMS) Class AB HCCA Series 4 Channel Car Amplifier

• 250 watts x 4 channel @ 4 ohm
• 375 watts x 4 channel @ 2 ohm
• Bridged: 750 watts x 2 channel @ 4 ohm
• Total RMS Power: 1500 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

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NVX XKIT44

NVX XKIT44

$119.99

$83.99

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• 250 watts x 4 channel @ 4 ohm
• 375 watts x 4 channel @ 2 ohm
• Bridged: 750 watts x 2 channel @ 4 ohm
• Total RMS Power: 1500 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

Crunch PZ2-2030.2D

2000W Peak Class D Powerzone 2 Series 2-Channel Car Amplifier

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Crunch PZ2-2030.2D

2000W Peak Class D Powerzone 2 Series 2-Channel Car Amplifier

• @ 4 ohm
• @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power:
• Class D 2 ohm Stable 2-Channel Amplifier

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-25% $119.99

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Infinity Primus 90041A (PRIMUS90041A)

1480W Peak (520W RMS) Class D Primus Series 4-Channel Car Amplifier

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Infinity Primus 90041A (PRIMUS90041A)

1480W Peak (520W RMS) Class D Primus Series 4-Channel Car Amplifier

• 90 watts x 4 channel @ 4 ohm
• 130 watts x 4 channel @ 2 ohm
• Bridged: 260 watts x 2 channel @ 4 ohm
• Total RMS Power: 520 watts
• Class D 2 ohm Stable 4-Channel Amplifier

FREE Belva Amp Kit at Checkout!
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-17% $249.95

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• 90 watts x 4 channel @ 4 ohm
• 130 watts x 4 channel @ 2 ohm
• Bridged: 260 watts x 2 channel @ 4 ohm
• Total RMS Power: 520 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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