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RE Audio SA 90.4

800W 4 Channel SA Series Full Digital Amplifier

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RE Audio SA 90.4

800W 4 Channel SA Series Full Digital Amplifier

$169.99

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NVX XKIT84 4-Channel 8-Gauge Wiring Kit

In case you didn't know, NVX has top notch wire and this kit has everything you need!

$69.99

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Kicker 4-Channel RCA Audio Interconnect Cable

4 Meters (13 ft.) 4-Channel K-Series RCA Audio Interconnect Cable

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50 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

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Bundles with this Product

Save 25% on an 8 Gauge Amp Kit with Purchase!

Need a wiring kit to install your amp? The TruConnex TC4KIT-84B is your answer. For a limited time, when you click "Add Both to Cart", get 25% off the amp kit. You may still need Speaker Wire, so make sure to check that out too!

6.00

92496

1216

RE Audio SA 90.4

$169.99

+

25% OFF

TruConnex TC4KIT-84B by Metra

$23.99

Special Price $17.99 ($23.99 if purchased separately)

TruConnex TC4KIT-84B by Metra

• 8 Gauge Power Amplifier Installation Kit
• Ideal for Systems Up to 450 Watts
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 4-Channel Twisted RCA Cables

25% Off of XKIT84 OFC Amplifier Install Kit with Purchase!

Purchase a qualifying Amplifier and save $17.50 on an NVX XKIT84 OFC amplifier installation kit. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

17.50

92496

626

RE Audio SA 90.4

$169.99

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NVX XKIT84

$69.99

Special Price $52.49 ($69.99 if purchased separately)

NVX XKIT84

• 8 Gauge 4-Channel Complete Amplifier Installation Kit
• For Car Audio Systems Up To 600 Watts RMS
• Silver-Tinned 100% Virgin Copper
• 4-channel RCA Interconnect Cable

(Offer 1 of 2)

Combined Total Price

$187.98

You Save $6.00

General Features:

  • SA Series 4-Channel Full Class Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 63 watts x 4 chan.
    • 2 ohms: 85 watts x 4 chan.
    • Bridged, 4 ohms: 151 watts x 2 chan.
  • Max power output: 800 watts
  • 4 or 2 channel operation
  • Speaker-level (high-level) inputs
  • Variable high-pass filter (80 Hz, 24 dB/octave)
  • Variable low-pass filter (80 Hz, 24 dB/octave)
  • Subsonic filter (24 dB at 15 Hz)
  • Frequency Response: 10-40,000 Hz
  • Signal-to-Noise Ratio: 80dB
  • 8 gauge power and ground wiring is required for installation
    • Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier
  • Dimensions: 4.72"W x 7.87"L x 1.57"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

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.

63 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.

85 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.

151 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.
SA
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 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.

800 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.
8 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.
.05%
Speaker Level Inputs
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.
Yes
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)
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.
80 dB
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
40A x 1 
CEA-2006 Compliant
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.

Yes
Hi-Res Audio Compatible
This feature refers to if the product is capable of Hi-Res Audio (HRA) playback.

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
5.0
Value
5.0
Features
5.0
Design
4.5
Usability
5.0
aeonic

New York

Overall
Durability
Value
Features
Design
Usability
Great amp! Big power! Stable and efficient!

October 29, 2015

Hi guys, just a review on this amp for you guys. At first I was skeptical about it as it is a very small amp and the power ratings doesn't seem promising. I went on to purchase with my gut and hope it turns out well. Also the reason I had very limited space in my car.
Self installed it under the passenger seat, fits like a charm. Now comes the testing stage. This amp was installed to power 2 sets of speakers. A Focal Access 165AS and a JBL GTO coaxial speakers. Both speakers rates at 80W RMS where the amp states only 63W RMS x 4 channels. Turned it on, did some settings on the crossover and stereo. Then I start to crank up the volume to 35 on my Pioneer deck. I can say that the highs are clear (not audiophile like the Audisons), the bass was strong and hits hard on the mids as well as the coax at the rear. I pushed the gain up to about 70% and the speakers started to distort, I was in awe. What the heck? The speakers should be able to take more if you match the RMS ratings so I took my eBay bought RMS test kit to check the actual power it shows. At 70% gain on the SA amp, it shows 83W RMS on each channel with +- 3W RMS on every other. I was literally amazed, played it at the same setting for about 30 mins. Touched the amp and it was warm but not hot. You can still lay your fingers on it. Stopped and opened up the amp, double sided PCB and the components that I don't understand but look good though.
All in all, for such prices I would recommend this amp to anyone. Now time to push the gains higher and see what happens, might even test it with a 300W sub and see if it cuts out.

2 of 2 found this helpful

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James Heidelberg

Seattle wa

Overall
Durability
Value
Features
Design
Usability
Dam good amps 90.4-channel and 300.1 mono digital R.E. AMPS

November 11, 2016

R.E. WONT DISAPPOINT YOU GREAT AMPS SOUND IMPRESSIVE,POWERFUL, CLEAN SOUND....5 stars

0 of 0 found this helpful

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Accessory Tools and Products

Accessories added

NVX XKIT84 4-Channel 8-Gauge Wiring Kit

In case you didn't know, NVX has top notch wire and this kit has everything you need!

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

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

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NVX V-Series RCA Interconnect Cable

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

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StreetWires ZN7 RCA Interconnect Cable

16.4 ft. of 4-Channel RCA Cable with hyper twist construction, oxygen free copper, and precision machined tips.

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NVX XWS1650 Speaker Wire

50 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

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NVX XWS1625 16 AWG Speaker Wire

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Belva BBSW127 12 AWG Speaker Wire

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

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Belva BBSW167 16 AWG Speaker Wire

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

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NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

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

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Belva BBG3KT CCA 1/0 Gauge Big Three Kit

Features everything needed to upgrade factory power and ground wire.

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XS Power BIG3XS 100% OFC 1/0 Gauge Big 3 Upgrade Kit

1/0 AWG Big 3 Upgrade Kit with 100% OFC Wire for Audio Sytems up to 350 Amps

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270 Amp G Series Alternator for Select 1994-2012 GM Vehicles

Most Popular! 270+ amps at anything above 1800 rpm engine speed!

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

240 Amp cutting edge 6 phase hairpin epoxy reinforced stator technology

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240 Amp L Series Alternator for Select 1963-1985 GM Vehicles

Specifically designed to fit in tight spaces

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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

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

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

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240 Amp S Series Alternator for 2011 Toyota Corolla

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

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240 Amp S Series Alternator for 2006-2011 Honda Civic

15% more efficient than typical alternators

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

WOW 370 AMPS! Elite series offers the highest possible amperage

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XS Power XP750 Special Edition

12-Volt Deep Cycle AGM Power Cell with 750 Max Amps

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Kinetik HC600-BLU

BLU Series 600 Watt 12V High Current AGM Car Audio Power Cell

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NVX XTGSP2

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Scosche TK12

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Five Piece Installer's Panel Removal Tool Kit

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

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Universal Wire Puller

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8 Gauge Ring Terminals, 5/16" Opening

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

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

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200 Amp Relay Isolator (BIR200)

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120 Amp 4-Post Battery Isolator

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240 AMP 3-Post Battery Isolator

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World's Smallest AFS / Mini ANL Fuse Holder

Accepts 4 gauge or 8-gauge wire

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

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4 Pack of 80 Amp Nickel-Plated MANL Fuse

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4 Pack of 100 Amp Nickel-Plated MANL Fuse

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4 Pack of 150 Amp Nickel-Plated MANL Fuse

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2 Pack of 200 Amp Nickel-Plated ANL Fuse

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2 Pack of 300 Amp Nickel-Plated ANL Fuse

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Gauge Reducer, 4 Gauge Input to 8 Gauge Pin

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Browse 2 questions and 1 answer
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Why did you choose this?
Sonic Electronix Store
it was CEA 2006 compliant and seemed to have the best specs for a compact amp that was still in my price range.
Michael K on Oct 8, 2015
Would this amp accept differential inputs (from something like a RF-BLD)?
Simon L on Jul 5, 2016
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

SA 90.4

UPC

611892980693

Weight

5.50lbs

Internal SKU

sa904

Internal Product ID

92496

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: RE Audio SA 90.4

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