3 Channel Amplifiers | Three Channel Car Amps at Sonic Electronix

3-Channel Amplifiers

3-Channel amplifiers are perfect for powering a pair of speakers and a subwoofer. Find a large selection of name brand three channel car amps that can deliver clear music.
Filters
Loading...
Filters

We are sorry, no available results!

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.

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.
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.

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.

This designates the series of the amplifier. Many amps are available in a litany of different wattage and channel configurations, but maintain consistent features throughout the product line.
The lowest impedance the amplifier will handle when it is not bridged.
The lowest impedance the amplifier will handle when it is bridged.
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 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.
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.

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.

Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:
  • RMS Power
  • Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.

This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
This feature will tell you if the amplifier has the capability to connect to a Bluetooth device.
listview icon
gridview icon
Soundstream ST3.1000D

1000W Max (500W RMS) Stealth Series 2-ohm Stable 3 Channel Class-D Amp, Remote Level Knob Included

ST3.1000D main
Go to item page

1000W Max (500W RMS) Stealth Series 2-ohm Stable 3 Channel Class-D Amp, Remote Level Knob Included

• 65 Watts RMS x 2, 100W sub @ 4 ohms
• 100 Watts RMS x 2, 300W sub @ 2 ohms
• 200 Watts RMS x 1, 300W sub @ 4 ohms Bridged
• Total Peak Power: 1000 Watts
• High Pass, Low Pass and Subsonic Filters
• Small Footprint to Mount Anywhere
• Aluminum Heatsink
• Dimensions: 7.75" W x 3" L x 1.5" H

Soundstream ST3.1000D

1000W Max (500W RMS) Stealth Series 2-ohm Stable 3 Channel Class-D Amp, Remote Level Knob Included

In stock

$179.99 (22.78% off)
$138.99

Item Added to Cart

ST3.1000D small

1000W Max (500W RMS) Stealth Series 2-ohm Stable 3 Channel Class-D Amp, Remote Level Knob Included

$138.99

Keep Shopping

Belva BAK84

Complete 8 Gauge Amplifier Wiring Kit with 4-Channel RCA Interconnects

$29.99

Add
FREE NVX XMountPro Cell Phone Mount with Select Orders

Spend $200 and use code XMOUNTPRO to get this free!.

$14.99

Add
NVX V-Series RCA Interconnect Cable

19 ft. of 4-Channel RCA cable with dual twisted-pair conductors

$28.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Soundstream ST3.1000D.
JL Audio MX600/3

600W RMS MX Series Class-D 3-Channel 2-Ohm Stable Amplifier

MX600/3 main
Go to item page

600W RMS MX Series Class-D 3-Channel 2-Ohm Stable Amplifier

• 400 Watts RMS x 3 @ 4 ohms
• 600 Watts RMS x 3 @ 2 ohms
• Total RMS Power: 600 Watts
• IPX6 Water Resistant
• 0 - +12 Bass Boost
• Heavy Duty Aluminum Alloy Heatsink
• Dimensions: 9.33" W x 4.5" L x 1.77" H

1
JL Audio MX600/3

600W RMS MX Series Class-D 3-Channel 2-Ohm Stable Amplifier

In stock

$499.99 (10.00% off)
Vip Icon $449.99
Hide info
More info Item page
3 Special offers
  • Get A Free $75 Dollar Gift Card With Purchase!
  • Get 25% Off DD-1 Distortion Detector!
  • FREE True 4 Gauge OFC Amplifier Install Kit with Purchase

Item Added to Cart

MX600/3 small

600W RMS MX Series Class-D 3-Channel 2-Ohm Stable Amplifier

$449.99

Keep Shopping

JL Audio XD-PCS4-1B 4 Gauge Wiring Kit

Get a JL Audio wiring kit to match your new JL amplifier! Don't forget the RCA's!

$179.99

Add
FREE NVX XMountPro Cell Phone Mount with Select Orders

Spend $200 and use code XMOUNTPRO to get this free!.

$14.99

Add
NVX Universal Remote Level Bass Control

Controls bass level and frequency via RCA/Interconnect connectors on any amp.

$9.99

Add

Don't see the accessory you're looking for?
View all available accessories for the JL Audio MX600/3.
JL Audio XD500/3v2

500W XDv2 Series 3-Channel Class D System Amplifier with High-Speed NexD Switching Design

XD500/3v2 main
Go to item page

500W XDv2 Series 3-Channel Class D System Amplifier with High-Speed NexD Switching Design

• RMS: 75 W x 2 + 180 W x 1 @ 4 ohms, 100 W x 2 + 300 W x 1 @ 2 ohms, 200 W x 1 @ 4 ohms Bridged
• NexD Switching Technology
• Differential Balanced Input Section
• Advanced Rollback Protection
• Frequency Response: 12 Hz - 22 kHz (+0, -1dB)
• Detented, Calibrated Filter Freq. Potentiometer

JL Audio XD500/3v2

500W XDv2 Series 3-Channel Class D System Amplifier with High-Speed NexD Switching Design

OUT OF STOCK

$612.48 (2.04% off)
Vip Icon $599.99

Item Added to Cart

XD500/3v2 small

500W XDv2 Series 3-Channel Class D System Amplifier with High-Speed NexD Switching Design

$599.99

Keep Shopping

JL Audio XD-PCS4-1B 4 Gauge Wiring Kit

Get a JL Audio wiring kit to match your new JL amplifier! Don't forget the RCA's!

$179.99

Add
FREE NVX XMountPro Cell Phone Mount with Select Orders

Spend $200 and use code XMOUNTPRO to get this free!.

$14.99

Add
Bass Remote

A bass remote made specifically for the this amplifier.

$54.99

Add

Don't see the accessory you're looking for?
View all available accessories for the JL Audio XD500/3v2.
JL Audio XD500/3v2 Amplifier + Free High Quality NVX Amp Kit

500W XDv2 Series 3-Channel Class D System Amplifier with High-Speed NexD Switching Design

XD500/3v2, XKIT42 main
Go to item page

500W XDv2 Series 3-Channel Class D System Amplifier with High-Speed NexD Switching Design

• RMS: 75 W x 2 + 180 W x 1 @ 4 ohms, 100 W x 2 + 300 W x 1 @ 2 ohms, 200 W x 1 @ 4 ohms Bridged
• NexD Switching Technology
• Differential Balanced Input Section
• Advanced Rollback Protection
• Frequency Response: 12 Hz - 22 kHz (+0, -1dB)
• Detented, Calibrated Filter Freq. Potentiometer

61
JL Audio XD500/3v2 Amplifier + Free High Quality NVX Amp Kit

500W XDv2 Series 3-Channel Class D System Amplifier with High-Speed NexD Switching Design

OUT OF STOCK

$762.47 (14.10% off)
$654.99
3-Channel Amplifiers

A car audio amplifier acts as the power source to your sound system. Technically, the amplifier modulates power generated from the car battery. An amp specified to your speaker's inputs will fully orchestrate your sound system with low bass beats and high frequency sounds.

3 channel amplifiers are great combo amps, because they allow users to power a pair of speakers and a great subwoofer amplifier for smaller sized vehicles were you tend to not really have the need to deal with rear speakers. These three channel amplifiers also provide a more inexpensive option towards upgrading any car audio system.

A 3 channel amp is constructed as a two channel AB amp up front, and has a third channel on the rear channel like a Class D amplifier. The main difference with a 3 channel amplifier is the application of two speakers and one subwoofer.

Make sure to check out all of the awesome 3-Channel Amplifiers we have right here at Sonic Electronix.

Related Categories


Amplifier Wiring Kits Amplifier Wiring Kits

Get all the cables, wires, and hardware you need to install your new car audio amplifier with one of these power amp kits.

Capacitors Capacitors

Car audio capacitors are a great addition to any aftermarket audio system that is in need of a little extra power. We have caps from 1.0 farad up to 100 farad!

EQs, Signal & Sound Processors EQs, Signal & Sound Processors

Find a quality line output converter, digital sound processor, EQ, crossover or bass enhancer in here.

Marine Amplifiers Marine Amplifiers

Enhance the sound on your boat by adding an amplifier to your marine audio system. These marine amps are the perfect way to get louder, bigger, and clearer sound quality on your boat. These marine amplifiers can be great for standard boat speakers, tower speakers, and even some marine PA systems. Each amp is specially treated and engineered to function in the same wet, salty environment that boats are in.

Motorcycle Amplifiers Motorcycle Amplifiers

Your motorcycle will sound better than ever with the proper amplifier. Most of these amps are specially designed with special materials that can withstand the vibrations and elemental exposure, while others are designed with an extremely small footprint to fit conveniently in a saddlebag or other tight installations. Many of the products in this category are specifically designed for certain motorcycles, making installation a breeze.

    clear all items