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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.
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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.
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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.
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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.
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The lowest impedance the amplifier will handle when it is not bridged.
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The lowest impedance the amplifier will handle when it is bridged.
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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.
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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.
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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.
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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.

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This feature will tell you if the amplifier has the capability to connect to a Bluetooth device.
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Focal 100 CVX

4" 2-way Polyglass Series Speakers (100CVX)

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4" 2-way Polyglass Series Speakers (100CVX)

4" Polyglass Series 2-way Speakers • 100W Max • 50W RMS • Polyglass cone woofer • Butyl rubber surround • Adjustable aluminum inverted dome tweeter • 20% Glass fiber filled ABS material basket frame construction • Built-in 12 dB/octave crossover

4" Polyglass Series 2-way Speakers • 100W Max • 50W RMS • Polyglass cone woofer • Butyl rubber surround • Adjustable aluminum inverted dome tweeter • 20% Glass fiber filled ABS material basket frame construction • Built-in 12 dB/octave crossover

Focal 165 YE (165YE) (Open-Box, Damaged Packaging)

6.5" Access Series 2-Way Component Car Speakers Kit

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6.5" Access Series 2-Way Component Car Speakers Kit

• 70 Watts RMS / 140 Watts Max
• Sensitivity (2.83V/1m): 91.3dB
• Frequency Response: 60Hz – 20kHz
• DFS (Dual Fiberglass Structure) Cone
• 20% Fiberglass Filled ABS Chasis

• 70 Watts RMS / 140 Watts Max
• Sensitivity (2.83V/1m): 91.3dB
• Frequency Response: 60Hz – 20kHz
• DFS (Dual Fiberglass Structure) Cone
• 20% Fiberglass Filled ABS Chasis

Focal 130 CVX

5.25" 2-way Polyglass Coaxial Speakers (130CVX)

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5.25" 2-way Polyglass Coaxial Speakers (130CVX)

5-1/4" 2-Way Polyglass Coaxial Car Speakers • 120W Max • 60W RMS • Polyglass cone woofer • 20% Fiberglass filled ABS • Aluminum inverted dome tweeter

5-1/4" 2-Way Polyglass Coaxial Car Speakers • 120W Max • 60W RMS • Polyglass cone woofer • 20% Fiberglass filled ABS • Aluminum inverted dome tweeter

Focal PSB200 (Open-Box, Damaged Packaging)

Sealed Enclosure with 8" Shallow-Mount Subwoofer

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Sealed Enclosure with 8" Shallow-Mount Subwoofer

• 8" Passive Subwoofer Enclosure with 150-Watt Amp
• Power: 150 W RMS 4 Ohm
• Frequency Response: 45-150Hz
• Sensitivity: 83dB

• 8" Passive Subwoofer Enclosure with 150-Watt Amp
• Power: 150 W RMS 4 Ohm
• Frequency Response: 45-150Hz
• Sensitivity: 83dB

PSB200 small

Item added to your cart.

Price: $199.99

Essential add-ons
NVX Sound Dampening Trunk Kit (SDTK20)

20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

$89.99

$59.99

Add to cart
NVX Sound Dampening Rubber Roller (SDRLR1)

Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

$9.99

$7.99

Add to cart

Focal ISU165 (Open-Box, Damaged Packaging)

Universal Line 6.5" 2-Way Component Speakers

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Universal Line 6.5" 2-Way Component Speakers

• Universal Line 6.5" 2-Way Component Speakers
• PEAK Power: 140W
• RMS Power: 70W
• Sensitivity: 93dB
• Impedance: 4Ω
• Frequency Response: 60Hz-21kHz

• Universal Line 6.5" 2-Way Component Speakers
• PEAK Power: 140W
• RMS Power: 70W
• Sensitivity: 93dB
• Impedance: 4Ω
• Frequency Response: 60Hz-21kHz

Focal PC 130 (Open-box, Damaged Packaging)

5-1/4" Performance Series 2-Way Coaxial Car Speakers

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5-1/4" Performance Series 2-Way Coaxial Car Speakers

• 5-1/4" Performance Series Speakers
• 2-Way Coaxial
• 120W Max / 60W RMS
• 4 ohms Impedance
• Polyglass Cone Material
• Butyl Rubber Surround
• Aluminum Dome Tweeter

• 5-1/4" Performance Series Speakers
• 2-Way Coaxial
• 120W Max / 60W RMS
• 4 ohms Impedance
• Polyglass Cone Material
• Butyl Rubber Surround
• Aluminum Dome Tweeter

Focal Integration IFBMW-S (Open-Box, Damaged Packaging)

Plug & Play Line 2-Way 4" Component BMW Dedicated Kit

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Plug & Play Line 2-Way 4" Component BMW Dedicated Kit

• 2-Way 4" Component BMW Dedicated Kit
• 40 W RMS at 4 ohms
• 100% plug and play (original connectors)
• Quick installation

• 2-Way 4" Component BMW Dedicated Kit
• 40 W RMS at 4 ohms
• 100% plug and play (original connectors)
• Quick installation

Focal PC 100 (Open-Box, Damaged Packaging)

4" Performance Series 2-Way Coaxial Car Speakers

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4" Performance Series 2-Way Coaxial Car Speakers

• 4" Performance Series Speakers
• 2-Way Coaxial
• 100W Max / 50W RMS
• 4 ohms Impedance
• Polyglass Cone Material
• Butyl Rubber Surround
• Aluminum Dome Tweeter

• 4" Performance Series Speakers
• 2-Way Coaxial
• 100W Max / 50W RMS
• 4 ohms Impedance
• Polyglass Cone Material
• Butyl Rubber Surround
• Aluminum Dome Tweeter

Focal ISU570 (ISU 570) (Open-Box, Damaged Packaging)

Universal Line 5" x 7" 2-Way Component Speakers

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Universal Line 5" x 7" 2-Way Component Speakers

• Universal Line 5" x 7" 2-Way Component Speakers
• Peak Power: 140W
• RMS Power: 70W
• Sensitivity: 94dB
• Impedance: 4Ω
• Frequency Response: 60Hz-21kHz

• Universal Line 5" x 7" 2-Way Component Speakers
• Peak Power: 140W
• RMS Power: 70W
• Sensitivity: 94dB
• Impedance: 4Ω
• Frequency Response: 60Hz-21kHz

Focal SUB P20FE (Open-Box, Damaged Packaging)

8" 500W 4-Ohm Flax Evo Car Audio Subwoofer

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8" 500W 4-Ohm Flax Evo Car Audio Subwoofer

• Unique Flax Cone
• Dual Magnet Motor
• Rubber Surround

• Unique Flax Cone
• Dual Magnet Motor
• Rubber Surround

SUB P 20FE (Open-Box, Damaged Packaging) small

Item added to your cart.

Price: $199.99

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Essential add-ons
NVX 20 ft. of True Spec 8 Gauge Speaker Wire

Flexible multi-strand cable bends and twists to meet your installation needs.

$64.99

$49.99

Add to cart
Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

$6.99

Add to cart
NVX SDTK20

20 Square Feet of Sound Damping Material

$89.99

$59.99

Add to cart
Stinger RKXTK

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

$209.00

$92.99

Add to cart
Dynamat Trunk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

$236.95

$149.95

Add to cart
NVX SDRLR1 Sound Damping Rubber Roller

Universal Professional Heavy Duty Roller for Sound Damping

$9.99

$7.99

Add to cart
NVX SDRLR2 Sound Damping Rubber Roller

Universal Professional Heavy Duty Roller for Sound Damping

$11.24

$8.99

Add to cart
Belva BAMMD1

Six Function Digital Multimeter

$14.99

$6.99

Add to cart
Belva BAMMD3

Nine Function Digital Multimeter

$29.99

$9.99

Add to cart

Focal KitE25KX (Open-Box, Damaged Packaging)

K2 Power Line 10" Dual 4Ω Voice Coil Component Subwoofer

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K2 Power Line 10" Dual 4Ω Voice Coil Component Subwoofer

• 10" Dual 4Ω Voice Coil Component Subwoofer
• Power Handling: 600W RMS
• K2 Kevlar sandwich cone
• “Radial VC” Cooling
• Motor "dual magnet"

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• 10" Dual 4Ω Voice Coil Component Subwoofer
• Power Handling: 600W RMS
• K2 Kevlar sandwich cone
• “Radial VC” Cooling
• Motor "dual magnet"

E 25 KX small

Item added to your cart.

Price: $599.99

Essential add-ons
Dual 10" Ported Enclosure with Black Front Baffle

Durable 3/4" Medium Density Fiberboard (MDF) Construction.

$199.99

$129.99

Add to cart
Single 10" Truck Style Vented Subwoofer Enclosure

Durable 3/4" Medium Density Fiberboard (MDF) Construction

$89.99

$89.99

Add to cart
Single 10" Sealed Subwoofer Enclosure

Durable 3/4" Medium Density Fiberboard (MDF) Construction

$89.99

$59.99

Add to cart
Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

$6.99

Add to cart
NVX SDTK20

20 Square Feet of Sound Damping Material

$89.99

$59.99

Add to cart
NVX SDBP40

40 Square Feet of Sound Dampening Material

$279.99

$89.99

Add to cart
Stinger RKXTK

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

$209.00

$92.99

Add to cart
Stinger RKX36B

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for the whole car!

$219.00

$140.99

Add to cart
Dynamat Trunk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

$236.95

$149.95

Add to cart
Dynamat Bulk Pack

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

$383.95

$235.99

Add to cart
NVX SDRLR1 Sound Damping Rubber Roller

Universal Professional Heavy Duty Roller for Sound Damping

$9.99

$7.99

Add to cart
NVX SDRLR2 Sound Damping Rubber Roller

Universal Professional Heavy Duty Roller for Sound Damping

$11.24

$8.99

Add to cart
Belva BAMMD1

Six Function Digital Multimeter

$14.99

$6.99

Add to cart
Belva BAMMD3

Nine Function Digital Multimeter

$29.99

$9.99

Add to cart

Focal iBus2.1 (Open-Box, Damaged Packaging)

8" Under Seat Flat Subwoofer Enclosure with 2-Channel Amplifier (75W RMS)

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8" Under Seat Flat Subwoofer Enclosure with 2-Channel Amplifier (75W RMS)

• 8" Under Seat Flat Subwoofer Enclosure
• 150 W RMS at 4 ohms
• Built-In 2-Channel Amplifier
• Recreate a high-performance 2.1 system in your car

• 8" Under Seat Flat Subwoofer Enclosure
• 150 W RMS at 4 ohms
• Built-In 2-Channel Amplifier
• Recreate a high-performance 2.1 system in your car

iBus 2.1 small

Item added to your cart.

Price: $599.99

Essential add-ons
NVX SDTK20

Trunk Kit - 20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

$89.99

$59.99

Add to cart
Dynamat Xtreme 20' Trunk Kit 19405

20 ft. Trunk Kit with (5) Dynamat Extreme 18" x 32" Pieces

$236.95

$149.95

Add to cart
Boom Mat Damping Material (050210)

20.8 sq.ft Damping Material - (10 pk - 12-1/2" x 24" x 2mm )

$145.81

$119.99

Add to cart

Focal RCX-165 (RCX 165)

Auditor Line 6.5” 2-Way Coaxial Speakers

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Auditor Line 6.5” 2-Way Coaxial Speakers

• Auditor Line 6.5” 2-Way Coaxial Speakers
• PEAK Power: 120W
• RMS Power: 60W
• Sensitivity: 91.5dB
• Impedance: 4Ω
• Frequency Response: 60Hz-21kHz

• Auditor Line 6.5” 2-Way Coaxial Speakers
• PEAK Power: 120W
• RMS Power: 60W
• Sensitivity: 91.5dB
• Impedance: 4Ω
• Frequency Response: 60Hz-21kHz

Focal 570AC (Open-Box, Damaged Packaging)

Access Line 5" x 7” 2-Way Coaxial Kit

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Access Line 5" x 7” 2-Way Coaxial Kit

• 5" x 7” 2-Way Coaxial Speakers
• Power: 60 W RMS 4 Ohm
• All Weather Woven Fiberglass Woofer Cones
• Inverted Dome Aluminium Tweeter
• Stamped Steel Basket Chasis

• 5" x 7” 2-Way Coaxial Speakers
• Power: 60 W RMS 4 Ohm
• All Weather Woven Fiberglass Woofer Cones
• Inverted Dome Aluminium Tweeter
• Stamped Steel Basket Chasis

Focal PC165FE (Open-Box, Damaged Packaging)

Premium 2-Way Coaxial Speaker Kit

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Premium 2-Way Coaxial Speaker Kit

• Unique Flax Cone
• TMD Surround
• Net weight: 1,150g/2.54lbs
• Inverted Dome Tweeter

• Unique Flax Cone
• TMD Surround
• Net weight: 1,150g/2.54lbs
• Inverted Dome Tweeter

Focal RSE-165 (RSE165)

Auditor Line 6.5” 2-Way Component Speakers

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Auditor Line 6.5” 2-Way Component Speakers

• Auditor Line 6-1/2″ Two-way Component Kit
• PEAK Power: 120W
• RMS Power: 60W
• Sensitivity: 91.5dB
• Impedance: 4Ω
• Frequency Response: 60Hz-21kHz

• Auditor Line 6-1/2″ Two-way Component Kit
• PEAK Power: 120W
• RMS Power: 60W
• Sensitivity: 91.5dB
• Impedance: 4Ω
• Frequency Response: 60Hz-21kHz

Focal 165 AC (165AC)

Access Line 6.5” 2-way Coaxial Car Speakers Kit

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Access Line 6.5” 2-way Coaxial Car Speakers Kit

• 6.5” Two-Way Coaxial Speakers
• Power: 60 W RMS 4 Ohm
• All Weather Woven Fiberglass Woofer Cones
• Inverted Dome Aluminium Tweeter
• 20% Fiberglass filled ABS Chasis

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• 6.5” Two-Way Coaxial Speakers
• Power: 60 W RMS 4 Ohm
• All Weather Woven Fiberglass Woofer Cones
• Inverted Dome Aluminium Tweeter
• 20% Fiberglass filled ABS Chasis

Focal Integration ISC 690

2-WAY COAXIAL KIT 6x9

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2-WAY COAXIAL KIT 6x9

• FEATURE 1
• FEATURE 2
• FEATURE 3
• FEATURE 4
• FEATURE 5
• FEATURE 6
• FEATURE 7

• FEATURE 1
• FEATURE 2
• FEATURE 3
• FEATURE 4
• FEATURE 5
• FEATURE 6
• FEATURE 7

Focal IS165

6-1/2" 2-Way Integration Component Series Convertible Car Speakers

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6-1/2" 2-Way Integration Component Series Convertible Car Speakers

6-1/2" Integration Component Series Speakers • 2-Way Convertible Component • 140W Max • 70W RMS • 4 ohms Impedance • Polyglass Cone Material • Butyl Rubber Surround • Aluminum Dome Tweeter

6-1/2" Integration Component Series Speakers • 2-Way Convertible Component • 140W Max • 70W RMS • 4 ohms Impedance • Polyglass Cone Material • Butyl Rubber Surround • Aluminum Dome Tweeter

Focal RSE-130 (RSE 130)

Auditor Line 5.25″ 2-way Component Speakers

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Auditor Line 5.25″ 2-way Component Speakers

• Auditor Line 5″ 2-Way Component Speakers
• Peak Power: 100W
• RMS Power: 50W
• Sensitivity: 90dB
• Impedance: 4Ω
• Frequency Response: 65Hz-21kHz

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• Auditor Line 5″ 2-Way Component Speakers
• Peak Power: 100W
• RMS Power: 50W
• Sensitivity: 90dB
• Impedance: 4Ω
• Frequency Response: 65Hz-21kHz

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