Hifonics Class-D Amplifiers

Class-D amplifiers by Hifonics are built with strong aluminum housing and compact design.

filter-icon Filters & Sort
Loading...
Filters
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.

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 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.

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.
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.
Hifonics ZD-2550.1D

2550W RMS Zeus Delta Series Class-D Monoblock Car Amplifier

ZD-2550.1D main
Go to item page

2550W RMS Zeus Delta Series Class-D Monoblock Car Amplifier

• 650 watts x 1 channel @ 4 ohm
• 1275 watts x 1 channel @ 2 ohms
• 2550 watts x 1 channel @ 1 ohm
• Class D Stable Monoblock Amplifier

shipping truck icon
FREE 3-day shipping to VA. Get it Wed, Mar. 29

empty

List $249.99
$189.99

In stock

Only 2 Left!

• 650 watts x 1 channel @ 4 ohm
• 1275 watts x 1 channel @ 2 ohms
• 2550 watts x 1 channel @ 1 ohm
• Class D Stable Monoblock Amplifier

Item Added to Cart.

NVX XKIT42 100% OFC True 4 Gauge Wiring Kit with RCA Cables and Speaker Wire

The reviews speak for themselves, this is awesome wire with everything you need!

$99.99

Add
NVX XMICROLOC2

Add a 2-Channel amp without replacing your factory radio

$14.99

Add
NVX XBBR2

Looking to fine tune the bass in your vehicle? Look no further

$89.99

Add
Hifonics ZD-1350.1D

1350W RMS Zeus Delta Series Class-D Monoblock Car Amplifier

ZD-1350.1D main
Go to item page

1350W RMS Zeus Delta Series Class-D Monoblock Car Amplifier

• 1350 watts x 1 channel @ 4 ohm
• 675 watts x 1 channel @ 2 ohms
• 350 watts x 1 channel @ 1 ohm
• Class D Stable Monoblock Amplifier

shipping truck icon
FREE 3-day shipping to VA. Get it Wed, Mar. 29

empty

List $199.99
$149.99

In stock

Only 2 Left!

• 1350 watts x 1 channel @ 4 ohm
• 675 watts x 1 channel @ 2 ohms
• 350 watts x 1 channel @ 1 ohm
• Class D Stable Monoblock Amplifier

Item Added to Cart.

Belva BAK42 4 Gauge Amplifier Installation Kit

Great amps need great wire at a great price. This amp kit has everything you need!

$34.99

Add
NVX XMICROLOC2

Add a 2-Channel amp without replacing your factory radio

$14.99

Add
NVX XBBR2

Looking to fine tune the bass in your vehicle? Look no further

$89.99

Add
Hifonics ZD-3350.1D

3350W RMS Zeus Delta Series Class-D Monoblock Car Amplifier

ZD-3350.1D main
Go to item page

3350W RMS Zeus Delta Series Class-D Monoblock Car Amplifier

• 850 watts x 1 channel @ 4 ohm
• 1675 watts x 1 channel @ 2 ohms
• 3350 watts x 1 channel @ 1 ohm
• Class D Stable Monoblock Amplifier

shipping truck icon
FREE 3-day shipping to VA. Get it Wed, Mar. 29

empty

List $299.99
$249.99

In stock

Only 1 Left!

• 850 watts x 1 channel @ 4 ohm
• 1675 watts x 1 channel @ 2 ohms
• 3350 watts x 1 channel @ 1 ohm
• Class D Stable Monoblock Amplifier

Item Added to Cart.

NVX XKIT42 100% OFC True 4 Gauge Wiring Kit with RCA Cables and Speaker Wire

The reviews speak for themselves, this is awesome wire with everything you need!

$99.99

Add
2-Channel Line Out Converter

2-Channel Line Out Converter

$79.99

Add
NVX XBBR2

Looking to fine tune the bass in your vehicle? Look no further

$89.99

Add
Hifonics BG-1000.4

1000W BRUTUS Gamma Series 4-Channel Car Audio Amplifier

BG-1000.4 main
Go to item page

1000W BRUTUS Gamma Series 4-Channel Car Audio Amplifier

• 1000 Watt Amplifier
• 4-Channel Class D
• CEA-2006 Compliant
• Ultra-Fi™ MOSFET Technology

shipping truck icon
FREE 3-day shipping to VA. Get it Wed, Mar. 29

empty

List $219.99
$173.99

In stock

Item Added to Cart.

50-pack of KN95 masks

Supreme and comfortable KN95 PFF2 Mask Respirators

$37.40

Add
NVX XKIT44 4-Gauge 4-Channel Wiring Kit

4-Channel 100% OFC Complete True 4 Gauge Amp Kit with RCA Cables and Speaker Wire

$109.99

Add
Hifonics ZD-1350.4D

1350W RMS Zeus Delta Series Class-D 4-Channel Car Amplifier

ZD-1350.4D main
Go to item page

1350W RMS Zeus Delta Series Class-D 4-Channel Car Amplifier

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

shipping truck icon
FREE 3-day shipping to VA. Get it Wed, Mar. 29

empty

List $249.99
$199.99

In stock

Only 3 Left!

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

Item Added to Cart.

NVX XKIT44 4-Gauge 4-Channel Wiring Kit

4-Channel 100% OFC Complete True 4 Gauge Amp Kit with RCA Cables and Speaker Wire

$109.99

Add
NVX XIV45 4-Channel RCA Audio Interconnect Cable

5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

$19.99

Add
Hifonics ZD-750.4D

750W RMS Zeus Delta Series Class-D 4-Channel Car Amplifier

ZD-750.4D main
Go to item page

750W RMS Zeus Delta Series Class-D 4-Channel Car Amplifier

• 100 watts x 4 channel @ 4 ohms
• 175 watts x 4 channel @ 2 ohms
• Bridged: 375 watts x 2 channel @ 4 ohms
• Class D 2 ohms Stable 4-Channel Amplifier

shipping truck icon
FREE 3-day shipping to VA. Get it Wed, Mar. 29

empty

List $149.99
$129.99

In stock

• 100 watts x 4 channel @ 4 ohms
• 175 watts x 4 channel @ 2 ohms
• Bridged: 375 watts x 2 channel @ 4 ohms
• Class D 2 ohms Stable 4-Channel Amplifier

Item Added to Cart.

Belva BAK44 4-Channel 4 Gauge Amplifier Installation Kit

Complete 4-Channel CCA 4 Gauge Amp Kit with RCA Cables and Speaker Wire

$39.99

Add
NVX XMICROLOC4

Add a 4-channel amplifier without replacing your factory radio

$22.99

Add
NVX XIV45 4-Channel RCA Audio Interconnect Cable

5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

$19.99

Add
Hifonics BG-2500.1D

2500 Watts BRUTUS Gamma Mono Subwoofer Car Audio Amplifier

BG-2500.1D main
Go to item page

2500 Watts BRUTUS Gamma Mono Subwoofer Car Audio Amplifier

• 2500 Watt Amplifier
• Monoblock Class D
• CEA-2006 Compliant
• Ultra-Fi™ MOSFET Technology

shipping truck icon
FREE 3-day shipping to VA. Get it Wed, Mar. 29

empty

List $439.99
$329.99

In stock

Only 3 Left!

Item Added to Cart.

NVX XKIT42 100% OFC True 4 Gauge Wiring Kit with RCA Cables and Speaker Wire

The reviews speak for themselves, this is awesome wire with everything you need!

$99.99

Add
2-Channel Line Out Converter

2-Channel Line Out Converter

$79.99

Add
NVX XBBR2

Looking to fine tune the bass in your vehicle? Look no further

$89.99

Add
Hifonics ZD-1350.2D

1350W RMS Zeus Delta Series Class-D 2-Channel Car Amplifier

ZD-1350.2D main
Go to item page

1350W RMS Zeus Delta Series Class-D 2-Channel Car Amplifier

• 350 watts x 2 channel @ 4 ohms
• 675 watts x 2 channel @ 2 ohms
• Bridged: 1350 watts x 1 channel @ 4 ohms
• Class D 2 ohms Stable 2-Channel Amplifier

shipping truck icon
FREE 3-day shipping to VA. Get it Wed, Mar. 29

empty

List $149.99
$129.99

In stock

Only 3 Left!

• 350 watts x 2 channel @ 4 ohms
• 675 watts x 2 channel @ 2 ohms
• Bridged: 1350 watts x 1 channel @ 4 ohms
• Class D 2 ohms Stable 2-Channel Amplifier

Item Added to Cart.

Belva BAK42 4 Gauge Amplifier Installation Kit

Great amps need great wire at a great price. This amp kit has everything you need!

$34.99

Add
NVX XMICROLOC2

Add a 2-Channel amp without replacing your factory radio

$14.99

Add
NVX XBBR2

Looking to fine tune the bass in your vehicle? Look no further

$89.99

Add
Hifonics ZD-1750.5D

1350W RMS Zeus Delta Series Class-D 5-Channel Car Amplifier

Go to item page

1350W RMS Zeus Delta Series Class-D 5-Channel Car Amplifier

• 100 watts x 4 channel + 225 watts x 1 channel @ 4 ohms
• 225 watts x 4 channel + 450 watts x 1 channel @ 2 ohms
• Bridged: 450 watts x 2 channel @ 4 ohms + 450 watts x 1 channel @ 2 ohms
• Total RMS Power: 1350 watts
• Class D 1 ohms Stable 5-Channel Amplifier

empty

List $279.99
$219.99

• 100 watts x 4 channel + 225 watts x 1 channel @ 4 ohms
• 225 watts x 4 channel + 450 watts x 1 channel @ 2 ohms
• Bridged: 450 watts x 2 channel @ 4 ohms + 450 watts x 1 channel @ 2 ohms
• Total RMS Power: 1350 watts
• Class D 1 ohms Stable 5-Channel Amplifier

Item Added to Cart.

6 inputs / 6 outputs High Voltage Active Line Output Converter with Impedance Matching and Remote Level Control

The XLOC66X helps you integrate your entire after market system with your factory head unit

$99.99

Add
NVX XIV65 V-Series Interconnect Cable

5m (16.40 ft) 6-Channel RCA Audio Interconnect Cable

$29.99

Add
NVX XWS1275 Speaker Wire

75 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

$49.99

Add
Hifonics ZD-1950.1D

1950W RMS Zeus Delta Series Class-D Monoblock Car Amplifier

Go to item page

1950W RMS Zeus Delta Series Class-D Monoblock Car Amplifier

• 450 watts x 1 channel @ 4 ohm
• 975 watts x 1 channel @ 2 ohms
• 1950 watts x 1 channel @ 1 ohm
• Class D Stable Monoblock Amplifier

empty

List $229.99
$169.99

• 450 watts x 1 channel @ 4 ohm
• 975 watts x 1 channel @ 2 ohms
• 1950 watts x 1 channel @ 1 ohm
• Class D Stable Monoblock Amplifier

Item Added to Cart.

NVX XKIT42 100% OFC True 4 Gauge Wiring Kit with RCA Cables and Speaker Wire

The reviews speak for themselves, this is awesome wire with everything you need!

$99.99

Add
NVX XMICROLOC2

Add a 2-Channel amp without replacing your factory radio

$14.99

Add
NVX XBBR2

Looking to fine tune the bass in your vehicle? Look no further

$89.99

Add
    clear all items
    Related Categories

    • Hifonics Car Subwoofers

      Browse our selection of 12-inch, 10-inch and other popular car subs in here. You'll also find various sub boxes and loaded enclosures, including ones made specifically for your car.

    • Hifonics Equalizers & Sound Processors

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

    Hifonics Class-D Amplifiers Information

    Hifonics Class-D amplifiers include efficient, Class-D circuitry. This circuit makes the most out of the limited power available from your car’s electrical system keeping your amp cool. Check out the amazing audio signal and power of the Hifonics Class-D amplifiers.
    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?

    Add vehicle

    Save up to 10 different vehicles in your garage

    Loading...
    < Back