DC Audio 90.4 520W Competition Class AB 4-Channel Amplifier + Free $75 Sonic Electronix Gift Card
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DC Audio 90.4 + Free $75 Sonic Electronix Gift Card

520W Competition Series 4-Channel Class AB Amplifier + Free $75 Sonic Electronix Gift Card

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List price $640.00

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$449.95

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DC Audio 90.4

520W Competition Series 4-Channel Class AB Amplifier
Quantity: 1

General Features:

  • DC Audio Competition Series 90.4
  • Class-AB Full-Range 2-Ohm Stable 4-Channel Amplifier
  • RMS Power Rating:
    • 4 ohms: 90 watts x 4 chan.
    • 2 ohms: 130 watts x 4 chan.
    • Bridged, 4 ohms: 250 watts x 2 chan.
  • Total power output: 520 watts RMS
  • Pulse Width Modulated MOSFET power supply
  • LED power (green) and protect (red) indicators
  • Wired remote bass level control included
  • Soft start turn-on
  • 4, 3 or 2 channel operation
  • Preamp RCA outputs to daisy chain multiple amps
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • High-density split-dome convection heat-sink for extreme heat dissipation
  • 8 AWG speaker connections
  • Input sensitivity: ~ 200mV ~ 6V
  • Frequency Response: 20 - 20,000 Hz
  • Total Harmonic Distortion (THD): <0.1%
  • Signal to Noise Ration: 105 dB
  • Selectable crossover mode: HPF / FULL / LPF
  • Selectable crossover multiplier: 1x , 10x
  • Variable crossover filter: 50 - 500 Hz or 500 - 5,000 Hz, 24 dB/octave
  • Subsonic filter: 10 - 100 Hz , 24 dB/octave
  • Variable Bass Boost: 0 to +18 dB bass boost
  • Fuse Rating: 40A x 2
  • 4 gauge power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier. Click Here for our contact information.
  • Dimensions: 9.38"W x 14"L x 2.35"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

$75 e-Gift Card at Sonic Electronix

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Power Specifications - Full Range Channels

RMS Power @ 4 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 4 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

90 watts x 4 channels
RMS Power @ 2 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 2 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

130 watts x 4 channels
Bridged RMS Power

Bridging refers to combining two channels on an amplifier to create one channel with double the voltage and an increased power output. A 2-channel amplifier will bridge down to 1-channel and a 4-channel amplifier can bridge to create 2-channels. An amplifier is most commonly bridged to drive a subwoofer.

Remember, once you bridge two channels down to one its final impedance will be 4 ohms unless otherwise specified. This rating lists the RMS power created once an amplifier is bridged.

250 watts x 2 channels

Amplifier Specifications

Amplifier Series
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.
Competition (DC Audio)
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.

AB
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.
4
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.

520 watts
Maximum Input Gauge Size
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.
4 AWG
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 ohms
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
4 ohms
THD at Rated RMS Power
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
0.1%
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.

Low-Pass (LP)
High-Pass (HP)
High-Pass Crossover Frequency
The high-pass crossover frequency can be a fixed crossover point or a variable crossover range. A variable high-pass crossover allows you to select a specific crossover point which allows frequencies above the set crossover point to pass, while making frequencies below the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

10 - 300 Hz
Low-Pass Crossover Frequency
The low-pass crossover frequency is typically used for subwoofers. It can be a fixed crossover point or a variable crossover range. A variable low-pass crossover allows you to select a specific crossover point which allows frequencies below the set crossover point to pass, while making frequencies above the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

30 - 300 Hz
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
105 dB
Bass Boost
The objective of the bass boost is to get more kick out of your subwoofer. It is a circuit that emphasizes the lower frequencies at a given point. The bass boost should always be set first before setting the gain. This feature is known for destroying subwoofers and is commonly used incorrectly, so be cautious.
0 - 18 dB
Bass/Gain Remote
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.
Yes
Total Fuse Rating
The total amperage an amp requires.
Hi-Res Certified
This feature refers to if the product is capable of Hi-Res Audio (HRA) playback.

Authorized Dealer

Authorized Dealer
We're an Authorized Dealer for nearly all the brands and manufacturers we sell. In the rare occasion we are not authorized, we guarantee that the product comes from an Authorized dealer or distributor. As such, we will always assist you even past the return policy to assure you the entire manufacturer warranty is covered in the event you have encounter a manufacturer defect.

What is in the box?

WITB: Amplifiers
A detailed list of the equipment (main product and accessories) included with your amplifier. If special accessories are included in the box, they will be listed and detailed below the main list of equipment.
Other Accessory #1
Standard accessories are included in the main list above; however, this line provides specific details on an additional, unique accessory that is included with the product.
Other Accessory #2
Standard accessories are included in the list above special accessories; however, this line provides specific details on an additional, unique accessory that is included with the product.
Other Accessory #3
Standard accessories are included in the list above special accessories; however, this line provides specific details on an additional, unique accessory that is included with the product.
Other Accessory #4
Standard accessories are included in the list above special accessories; however, this line provides specific details on an additional, unique accessory that is included with the product.
Other Accessory #5
Standard accessories are included in the list above special accessories; however, this line provides specific details on an additional, unique accessory that is included with the product.
Paperwork
Paperwork included with the product.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
100%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.9
Value
4.9
Features
4.9
Design
4.9
Usability
5.0

Australia

Overall
Durability
Value
Features
Design
Usability
Power house

November 8, 2015

The following review is for 90.4, which is a part of the bundle you are viewing.

DB Drive 5x7s in the front, DB Drive 5x7s in the back (high power rated gear).

Crystal clear, with room on the gain for more!

1 of 1 found this helpful

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Newcomb, TN

Overall
Durability
Value
Features
Design
Usability
Sound quality

July 25, 2018

The following review is for 90.4, which is a part of the bundle you are viewing.

These are one of the better amps sonic carries. You can run a 2 way active off just this amp or run a set of comps up front and bridge the other 2 channels to power a small sub. There under rated just like all DC’s stuff to this thing can push every bit of 120watts a channel if not more.

0 of 0 found this helpful

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Chicago il

Overall
Durability
Value
Features
Design
Usability
DC Audio 90.4 + Free $75 Sonic Electronix Gift Card

July 5, 2018

5 stars all day long I have this amp running 4 6x9’s extreamly loud and clear best highs amp in the game you will not be upset with this amp I am getting the 175x4 to run 12 6.5 kicker ks components

0 of 0 found this helpful

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Newcomb, TN

Overall
Durability
Value
Features
Design
Usability
$75 e-Gift Card at Sonic Electronix

July 4, 2018

The following review is for SonicElectronix-75-Gift-Card, which is a part of the bundle you are viewing.

Got this bundled with the DC 90.4 which is a awesome deal. Everywhere else the amp was $500 sonic had it for less and it came with a $75 dollar credit so I get even more off my next purchase. Basically like getting the amp for $350 with my code taking off an additional 5%.

0 of 0 found this helpful

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Rockholds, KY

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
DC Audio 90.4 + Free $75 Sonic Electronix Gift Card

May 9, 2018

Got this bad boy on order to match my DC audio 2k. I love DC great stuff for not a lot of money. There stuff feels super heavy, and is nice like jewelry so you know it’s built to last. I recommend anything DC audio cause I have used there stuff for years and it’s near bullet proof and kills the main stream stuff performance/price wise. Only real con is there not the smallest amps, you will need some room to use them, but if you want big power and a heat sink to handle high power you gotta have a large heat sink.

0 of 0 found this helpful

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$city, $state

Overall
Durability
Value
Features
Design
Usability
Worth every penny

March 26, 2018

The following review is for 90.4, which is a part of the bundle you are viewing.

Replaced my 1500watt planet audio amp for this amp and it is 10 times louder and way more clear I was beyond surprised. Right it is pushing 4 6x9s I will end up putting it on 4 kicker ks components and the 175 watt one on my 6x9’s

0 of 0 found this helpful

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Greenfield, MN

Verified Purchase
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Convenient e-card service!

March 4, 2016

The following review is for SonicElectronix-75-Gift-Card, which is a part of the bundle you are viewing.

Very convenient and easy way to give the gift of credit!

0 of 0 found this helpful

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Accessory Tools and Products

Accessories added

Belva BAK44 4-Channel 4 Gauge Amplifier Installation Kit

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

Your Price $34.99

NVX XKIT44 4-Gauge 4-Channel Wiring Kit

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

Your Price $99.99

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

Your Price $19.99

NVX V-Series RCA Interconnect Cable

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

Your Price $21.99

NVX XIX45 X-Series RCA Interconnect Cable

16.4 ft. of 4-Channel X-Series RCA Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $34.99

Belva BBSW127 12 AWG Speaker Wire

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $14.99

NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

Your Price $79.99

Belva BBG3KT CCA 1/0 Gauge Big Three Kit

Features everything needed to upgrade factory power and ground wire.

Your Price $34.99

240 Amp S Series Alternator for Select 1992-2003 Dodge/Jeep Vehicles

240 Amp cutting edge 6 phase hairpin epoxy reinforced stator technology

Your Price $399.00

250 Amp Alternator for Select 2003-2008 Ford/Lincoln/Mercury Vehicles

Cutting edge 6 phase hairpin stator technology with Twin internal rectifier plates with finned heat sink

Your Price $399.99

240 Amp S Series Alternator for Select 1999-2006 Jeep Vehicles

6 phase alternators use less horsepower per Kilowatt than conventional 3 phase alternators

Your Price $399.00

240 Amp S Series Alternator for 2011 Toyota Corolla

Ultra precision balanced rotor with oversized charge post ensure sturdy cable connections

Your Price $399.99

240 Amp S Series Alternator for 2006-2011 Honda Civic

15% more efficient than typical alternators

Your Price $549.99

370 Amp E Series Alternator with Black Finish for Select 1994 - 2003 GM

WOW 370 AMPS! Elite series offers the highest possible amperage

Your Price $699.00

NVX XCAP1F

True 1.0 Farad 20V Capacitor with Digital Read-out, Built-in Distribution Block

Your Price $89.99

Belva BB1D

1.0 Farad Capacitor with Digital Red Display for up to 1000W Max

Your Price $24.99

NVX XTGSP2

Perfect for safely troubleshooting and testing audio systems

Your Price $19.99

SMD DD-1 Distortion Detector

Set your gains like a Pro, accurately and quickly

Your Price $149.95

SMD CC-1 Crossover Calibrator

This is a must have! Set your crossover frequency like a Pro

Your Price $148.99

Five Piece Installer's Panel Removal Tool Kit

Remove panels the right way (Durable Nylon Plastic Pry & Chisel Tool Set

Your Price $11.99

8 Gauge Ring Terminals, 5/16" Opening

Nickel Plated Brass - 5 Pieces (3 Red & 2 Black)

Your Price $2.49

4 Gauge Ring Terminals, 5/16" Opening

Nickel Plated Brass - 5 Pieces (3 Red & 2 Black)

Your Price $5.99

0/1 Gauge Ring Terminals, 3/8" Opening

Nickel Plated Brass - 5 Pieces (3 Red & 2 Black)

Your Price $9.99

PRO Series Classic Short GM Battery Post Shoc-Krome

Side post battery adapter for GM type batteries (Positive or Negative)

Your Price $6.99

PRO Series Classic Long GM Battery Post w/ Shoc-Krome Plating

Side post battery adapter for GM type batteries (Positive or Negative)

Your Price $5.99

200 Amp Relay Isolator (BIR200)

Great for isolating a second batter making it dedicated to the stereo system

Your Price $44.99

500 Amp Relay Isolator (BIR500)

Does not create a voltage drop to the second battery like conventional isolators

Your Price $59.99

120 Amp 4-Post Battery Isolator

Prevents primary battery discharge and extends battery life

Your Price $62.99

World's Smallest AFS / Mini ANL Fuse Holder

Accepts 4 gauge or 8-gauge wire

Your Price $12.99

ANL/Mini-ANL Fuse Holder with 1/0 or 4 Gauge Input and Output

No-fail termination and current flow, it helps keep your system protected and running smoothly

Your Price $19.99

4 Pack of 80 Amp Nickel-Plated MANL Fuse

Mini-ANL (MANL/AFS) 80A Nickel Plated Fuses

Your Price $5.99

4 Pack of 100 Amp Nickel-Plated MANL Fuse

Mini-ANL (MANL/AFS) 100A Nickel Plated Fuses

Your Price $3.99

4 Pack of 150 Amp Nickel-Plated MANL Fuse

Mini-ANL (MANL/AFS) 150A Nickel Plated Fuses

Your Price $5.99

2 Pack of 100 Amp Nickel-Plated ANL Fuse

ANL 100A Nickel plated for better power transfer

Your Price $2.99

2 Pack of 200 Amp Nickel-Plated ANL Fuse

Two fuses per order. High quality 200 Amp ANL Fuses

Your Price $2.99

2 Pack of 300 Amp Nickel-Plated ANL Fuse

Two fuses per order. High quality 300 Amp ANL Fuses

Your Price $2.99

Gauge Reducer, 4 Gauge Input to 8 Gauge Pin

Great for amplifiers that do not accept a large gauge power wire

Your Price $7.99

Gauge Reducer, 1/0 Gauge Input to 4 Gauge Pin

Great for amplifiers that do not accept large gauge power wire

Your Price $7.99

XIX2025 Strapping RCA

0.25 Meter (0.86 ft) Hyper-Flex RCA cable w/ Serpentine-Cut Nickel Plated Connectors

Your Price $9.99

NVX VUBT2

Universal Bluetooth Audio Receiver

Your Price $29.99

Product Summary

Manufacturer

Model Number

90.4_SonicElectronix-75-Gift-Card

Weight

13.61lbs

Internal SKU

90-4_75egift

Internal Product ID

92677

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: DC Audio 90.4 + Free $75 Sonic Electronix Gift Card

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DC Audio 90.4 + Free $75 Sonic Electronix Gift Card

520W Competition Series 4-Channel Class AB Amplifier + Free $75 Sonic Electronix Gift Card

$449.95

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Belva BAK44 4-Channel 4 Gauge Amplifier Installation Kit

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

$34.99

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
Belva BBSW127 12 AWG Speaker Wire

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

$14.99

Add

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