Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In
  1. Home
  2. SPL Store
  3. Discontinued SPL Car Audio & Electronics
  4. Discontinued SPL Car Amplifiers
  5. Discontinued SPL All Car Amplifiers

Discontinued All SPL Car Amplifiers

Filters
SPL ✕
Clear Filters
Reset Done
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 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.
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.

Condition

Shop the Category

filter-icon Filters & Sort
You are currently viewing discontinued products.

SPL FX4-840

840W Max, FX Series 4-Channel Amplifier

FX4-840 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL FX4-840

840W Max, FX Series 4-Channel Amplifier

• 840W Max, FX Series 4-Channel Amplifier • 4 ohm: 80 watts x 4 chan • 2 ohm: 95 watts x 4 chan • Bridged, @ 4 ohm: 190 watts x 2 chan • S/N Ratio: 98dB • THD: 0.02%

11

• 840W Max, FX Series 4-Channel Amplifier • 4 ohm: 80 watts x 4 chan • 2 ohm: 95 watts x 4 chan • Bridged, @ 4 ohm: 190 watts x 2 chan • S/N Ratio: 98dB • THD: 0.02%

SPL FX1-5500D

5500W Max, Class D Monoblock Amplifier

Get bigger discounts with our bundled Savings:
View All Deals!

FX1-5500D big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL FX1-5500D

5500W Max, Class D Monoblock Amplifier

FX1 Series 1-Channel Class D Car Amplifier • 1700W x 1 chan. @ 4 ohm • 2500W x 1 chan. @ 2 ohm • 3200W x 1 chan. @ 1 ohm • 5500W x 1 chan. Max • Nickel Plated Heavy Duty Power & Speaker Terminals

Promo Savings Icon

Get bigger discounts with our bundled Savings:
View All Deals!

14

FX1 Series 1-Channel Class D Car Amplifier • 1700W x 1 chan. @ 4 ohm • 2500W x 1 chan. @ 2 ohm • 3200W x 1 chan. @ 1 ohm • 5500W x 1 chan. Max • Nickel Plated Heavy Duty Power & Speaker Terminals

SPL GLA1-6000D

6000W Max Monoblock Class D Gorilla Series Car Amplifier

GLA1-6000D big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL GLA1-6000D

6000W Max Monoblock Class D Gorilla Series Car Amplifier

• RMS: 1700W x 1 @ 4 ohm, 2500W x 1 @ 2 ohm, 3200W x 1 @ 1 ohm
• Total Peak Power: 6000W
• Class D Circuitry
• Bass Boost 0-12 dB
• 1 Pair of Preamp Outputs
• Dimensions: 9-1/10"W x 17-1/2"L x 2-3/10"H

15

• RMS: 1700W x 1 @ 4 ohm, 2500W x 1 @ 2 ohm, 3200W x 1 @ 1 ohm
• Total Peak Power: 6000W
• Class D Circuitry
• Bass Boost 0-12 dB
• 1 Pair of Preamp Outputs
• Dimensions: 9-1/10"W x 17-1/2"L x 2-3/10"H

SPL FX1-4000D

Class D 4000 Watt Monoblock Amplifier

FX1-4000D big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL FX1-4000D

Class D 4000 Watt Monoblock Amplifier

FX1 Series 1-Channel Class D Car Amplifier • 1200W x 1 chan. @ 4 ohm • 1700W x 1 chan. @ 2 ohm • 2200W x 1 chan. @ 1 ohm • 4000W x 1 chan. Max • Nickel Plated Heavy Duty Power & Speaker Terminals

12

FX1 Series 1-Channel Class D Car Amplifier • 1200W x 1 chan. @ 4 ohm • 1700W x 1 chan. @ 2 ohm • 2200W x 1 chan. @ 1 ohm • 4000W x 1 chan. Max • Nickel Plated Heavy Duty Power & Speaker Terminals

SPL FX2-600

600W Max, FX Series 2-Channel Amplifier

FX2-600 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL FX2-600

600W Max, FX Series 2-Channel Amplifier

• 600W Max, FX Series 2-Channel Amplifier • 4 ohm: 95 watts x 2 chan • 2 ohm: 120 watts x 2 chan • Bridged, @ 4 ohm: 240 watts x 1 chan • S/N Ratio: 98dB •THD: 0.02%

• 600W Max, FX Series 2-Channel Amplifier • 4 ohm: 95 watts x 2 chan • 2 ohm: 120 watts x 2 chan • Bridged, @ 4 ohm: 240 watts x 1 chan • S/N Ratio: 98dB •THD: 0.02%

SPL FX4-1200

1200W Max, FX Series 4-Channel Amplifier

FX4-1200 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL FX4-1200

1200W Max, FX Series 4-Channel Amplifier

•1200W Max, FX Series 4-Channel Amplifier • 4 ohm: 100 watts x 4 chan • 2 ohm: 125 watts x 4 chan. • S/N Ratio: 98dB • THD: 0.02%

6

•1200W Max, FX Series 4-Channel Amplifier • 4 ohm: 100 watts x 4 chan • 2 ohm: 125 watts x 4 chan. • S/N Ratio: 98dB • THD: 0.02%

SPL FX2-1800

1800W Max, FX Series 2-Channel Amplifier

FX2-1800 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL FX2-1800

1800W Max, FX Series 2-Channel Amplifier

• 1800W Max, FX Series 2-Channel • 4 ohm: 300 watts x 2 chan • 2 ohm: 380 watts x 2 chan • Bridged, @ 4 ohm: 760 watts x 1 chan • S/N Ratio: 98dB • THD: 0.02%

1

• 1800W Max, FX Series 2-Channel • 4 ohm: 300 watts x 2 chan • 2 ohm: 380 watts x 2 chan • Bridged, @ 4 ohm: 760 watts x 1 chan • S/N Ratio: 98dB • THD: 0.02%

SPL FX2-2600

2600W Peak (1080W RMS) FX Series 2-ohm Stable Class-AB Bridgeable 2-Channel Amplifier

FX2-2600 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL FX2-2600

2600W Peak (1080W RMS) FX Series 2-ohm Stable Class-AB Bridgeable 2-Channel Amplifier

• 2600W Max, FX Series 2-Channel Amplifier • 4 ohm: 450 watts x 2 chan • 2 ohm: 540 watts x 2 chan • Bridged, @ 4 ohm: 1080 watts x 1 chan • S/N Ratio: 98dB • THD: 0.02%

9

• 2600W Max, FX Series 2-Channel Amplifier • 4 ohm: 450 watts x 2 chan • 2 ohm: 540 watts x 2 chan • Bridged, @ 4 ohm: 1080 watts x 1 chan • S/N Ratio: 98dB • THD: 0.02%

SPL FX2-420

420W Max, FX Series 2-Channel Amplifier

FX2-420 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL FX2-420

420W Max, FX Series 2-Channel Amplifier

• 420W Max, FX Series 2-Channel • 4 ohm: 80 watts x 2 chan • 2 ohm: 95 watts x 2 chan • Bridged, @ 4 ohm: 190 watts x 1 chan • S/N Ratio: 98dB • THD: 0.02%

4

• 420W Max, FX Series 2-Channel • 4 ohm: 80 watts x 2 chan • 2 ohm: 95 watts x 2 chan • Bridged, @ 4 ohm: 190 watts x 1 chan • S/N Ratio: 98dB • THD: 0.02%

SPL GLA1-3400D

3400W Max Monoblock Class D Gorilla Series Car Amplifier

GLA1-3400D big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL GLA1-3400D

3400W Max Monoblock Class D Gorilla Series Car Amplifier

• RMS: 1000W x 1 @ 4 ohm, 1400W x 1 @ 2 ohm, 1800W x 1 @ 1 ohm
• Total Peak Power: 3400W
• Class D Circuitry
• Bass Boost 0-12 dB
• 1 Pair of Preamp Outputs
• Dimensions: 9-1/10"W x 12"L x 2-3/10"H

12

• RMS: 1000W x 1 @ 4 ohm, 1400W x 1 @ 2 ohm, 1800W x 1 @ 1 ohm
• Total Peak Power: 3400W
• Class D Circuitry
• Bass Boost 0-12 dB
• 1 Pair of Preamp Outputs
• Dimensions: 9-1/10"W x 12"L x 2-3/10"H

SPL FX2-2200

2200W Max, FX Series 2-Channel Amplifier

FX2-2200 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL FX2-2200

2200W Max, FX Series 2-Channel Amplifier

• 2200W Max, FX Series 2-Channel Amplifier • 4 ohm: 370 watts x 2 chan • 2 ohm: 450 watts x 2 chan •Bridged, @ 4 ohm: 900 watts x 1 chan • S/N Ratio: 98dB • THD: 0.02%

4

• 2200W Max, FX Series 2-Channel Amplifier • 4 ohm: 370 watts x 2 chan • 2 ohm: 450 watts x 2 chan •Bridged, @ 4 ohm: 900 watts x 1 chan • S/N Ratio: 98dB • THD: 0.02%

SPL FX2-2200 Factory Refurbished

2200W Max FX Series 2-Channel Amplifier

FX2-2200 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL FX2-2200 Factory Refurbished

2200W Max FX Series 2-Channel Amplifier

• 2200W Max, FX Series 2-Channel Amplifier • 4 ohm: 370 watts x 2 chan • 2 ohm: 450 watts x 2 chan •Bridged, @ 4 ohm: 900 watts x 1 chan • S/N Ratio: 98dB • THD: 0.02%

• 2200W Max, FX Series 2-Channel Amplifier • 4 ohm: 370 watts x 2 chan • 2 ohm: 450 watts x 2 chan •Bridged, @ 4 ohm: 900 watts x 1 chan • S/N Ratio: 98dB • THD: 0.02%

SPL GLA1-2400D

2400W Max Monoblock Class D Gorilla Series Car Amplifier

GLA1-2400D big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL GLA1-2400D

2400W Max Monoblock Class D Gorilla Series Car Amplifier

• RMS: 700W x 1 @ 4 ohm, 950W x 1 @ 2 ohm, 1300W x 1 @ 1 ohm
• Total Peak Power: 2400W
• Class D Circuitry
• Bass Boost 0-12 dB
• 1 Pair of Preamp Outputs
• Dimensions: 9-1/10"W x 10-3/4"L x 2-3/10"H

4

• RMS: 700W x 1 @ 4 ohm, 950W x 1 @ 2 ohm, 1300W x 1 @ 1 ohm
• Total Peak Power: 2400W
• Class D Circuitry
• Bass Boost 0-12 dB
• 1 Pair of Preamp Outputs
• Dimensions: 9-1/10"W x 10-3/4"L x 2-3/10"H

SPL GLA4-1800

1800W 4-Channel Gorilla Series Class AB Car Amplifier

GLA4-1800 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL GLA4-1800

1800W 4-Channel Gorilla Series Class AB Car Amplifier

• 4 ohm: 150 watts x 4-Chan.
• 2 ohm: 190 watts x 4-Chan.
• Bridged, 4 ohm: 380 watts x 2 chan.
• Max power output: 1800 watts x 2 chan.

2

• 4 ohm: 150 watts x 4-Chan.
• 2 ohm: 190 watts x 4-Chan.
• Bridged, 4 ohm: 380 watts x 2 chan.
• Max power output: 1800 watts x 2 chan.

SPL GLA1-4500D

4500W Max Monoblock Class D Gorilla Series Car Amplifier

GLA1-4500D big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL GLA1-4500D

4500W Max Monoblock Class D Gorilla Series Car Amplifier

• RMS: 1200W x 1 @ 4 ohm, 1700W x 1 @ 2 ohm, 2200W x 1 @ 1 ohm
• Total Peak Power: 4500W
• Class D Circuitry
• Bass Boost 0-12 dB
• 1 Pair of Preamp Outputs
• Dimensions: 9-1/10"W x 14-3/4"L x 2-3/10"H

3

• RMS: 1200W x 1 @ 4 ohm, 1700W x 1 @ 2 ohm, 2200W x 1 @ 1 ohm
• Total Peak Power: 4500W
• Class D Circuitry
• Bass Boost 0-12 dB
• 1 Pair of Preamp Outputs
• Dimensions: 9-1/10"W x 14-3/4"L x 2-3/10"H

SPL GLA2-1500

1500W Max 2-Channel Gorilla Series Car Amplifier

GLA2-1500 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL GLA2-1500

1500W Max 2-Channel Gorilla Series Car Amplifier

• 4 ohm: 250 watts x 2 chan.
• 2 ohm: 325 watts x 2 chan.
• Bridged, 4 ohm: 650 watts x 1 chan.
• Max power output: 1500 watts x 1 chan.

1

• 4 ohm: 250 watts x 2 chan.
• 2 ohm: 325 watts x 2 chan.
• Bridged, 4 ohm: 650 watts x 1 chan.
• Max power output: 1500 watts x 1 chan.

SPL FX4-1600

1600W Max FX Series 4-Channel Amplifier

FX4-1600 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL FX4-1600

1600W Max FX Series 4-Channel Amplifier

• 1600W Max, FX Series 4-Channel • 4 ohm: 150 watts x 4 chan • 2 ohm: 180 watts x 4 chan • Bridged, @ 4 ohm: 360 watts x 2 cha • S/N Ratio: 98dB • THD: 0.02%

2

• 1600W Max, FX Series 4-Channel • 4 ohm: 150 watts x 4 chan • 2 ohm: 180 watts x 4 chan • Bridged, @ 4 ohm: 360 watts x 2 cha • S/N Ratio: 98dB • THD: 0.02%

SPL GRLA 1200/4 (GRLA1200/4)

1200W Max Gorilla Series 4-Channel Amplifier

GRLA1200/4 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL GRLA 1200/4 (GRLA1200/4)

1200W Max Gorilla Series 4-Channel Amplifier

Gorilla Series Class A/B 4-Channel Car Amplifier • 100 Watts x 4 Chan. @ 4 Ohm • 125 Watts x 4 Chan. @ 2 Ohm • 250 Watts x 2 Chan. Bridged • 1800 Watts Max • Regulated MOSFET PMW Power Supply • Preamp RCA Outputs

3

Gorilla Series Class A/B 4-Channel Car Amplifier • 100 Watts x 4 Chan. @ 4 Ohm • 125 Watts x 4 Chan. @ 2 Ohm • 250 Watts x 2 Chan. Bridged • 1800 Watts Max • Regulated MOSFET PMW Power Supply • Preamp RCA Outputs

SPL GLA4-400

400W 4-Channel Gorilla Series Car Amplifier

GLA4-400 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL GLA4-400

400W 4-Channel Gorilla Series Car Amplifier

• 4 ohm: 45 watts x 4-Chan.
• 2 ohm: 75 watts x 4-Chan.
• Bridged, 4 ohm: 150 watts x 2 chan.
• Pulse Width Modulated MOSFET Power Supply

1

• 4 ohm: 45 watts x 4-Chan.
• 2 ohm: 75 watts x 4-Chan.
• Bridged, 4 ohm: 150 watts x 2 chan.
• Pulse Width Modulated MOSFET Power Supply

SPL GLA2-600

600W Max 2-Channel Gorilla Series Class AB Car Amplifier

GLA2-600 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

SPL GLA2-600

600W Max 2-Channel Gorilla Series Class AB Car Amplifier

• 4 ohm: 100 watts x 2 chan.
• 2 ohm: 125 watts x 2 chan.
• Bridged, 4 ohm: 250 watts x 1 chan.
• Max power output: 600 watts x 1 chan.

• 4 ohm: 100 watts x 2 chan.
• 2 ohm: 125 watts x 2 chan.
• Bridged, 4 ohm: 250 watts x 1 chan.
• Max power output: 600 watts x 1 chan.

1 2 Next

Items per page: 20 40 60

    Clear all
    why-shoping-with-sonic

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

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

    2003 Ford Focus

    2002 Ford Focus ZX3

    1997 Ford Taurus

    2003 Dodge Ram 1500 Van

    2005 Pontiac Sunfire

    2010 Scion tC

    2006 MINI Cooper

    2020 Chrysler 300

    2016 Ford Explorer

    2022 BMW X4

    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 Focus
    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