Garage
Shop

RE Audio SA 90.4

800W Dynamic Power (340W RMS) Ultra-Compact 4-Channel SA Series Class D Amplifier

RE Audio
Shop all RE Audio
Product videos
highlight-star-icon

• RMS Power: 63W x 4 @ 4 ohms, 85W x 4 @ 2 ohms
• Total Peak Power: 800W
• CEA-2006 Compliant
• Dimensions: 4.72" W x 7.87" L x 1.57" H

Learn more about the sa904

We apologize

This item has been discontinued

Product Highlights


• RMS Power: 63W x 4 @ 4 ohms, 85W x 4 @ 2 ohms
• Total Peak Power: 800W
• CEA-2006 Compliant
• Dimensions: 4.72" W x 7.87" L x 1.57" H

Description


RE Audio brand icon

Authorized dealer

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
  • Also found as: SA904, SA90.4
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Specifications & Details


Power Specifications - Full Range Channels
RMS Power @ 4 ohms
63 watts x 4 channel
RMS Power @ 2 ohms
85 watts x 4 channel
Bridged RMS Power
151 watts x 2 channel
Amplifier Specifications
Number of Channels
4-Channel
Total Peak Power Output
800 watts
Maximum Input Gauge Size
8 AWG
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
.05%
Speaker Level Inputs
Yes
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Signal-to-Noise Ratio
80 dB
Fuse Rating
40A x 1 
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

SA 90.4

Weight:

5.50lbs

Internal SKU:

sa904

Internal Product ID:

92496

Product and How-to Videos


  • RE Audio New Product Line Overview | CES 2015
  • How To Install an Amplifier: Car Amplifier Basics Part 2

Customer Ratings & Reviews



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



Durability
5
Value
5
Features
5
Design
4.5
Usability
5

Customer Reviews

Sort by:

Loading...

Great amp! Big power! Stable and efficient!

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.

By aeonic on October 29, 2015

8

found this helpful.

Dam good amps 90.4-channel and 300.1 mono digital R.E. AMPS

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

By James Heidelberg on November 11, 2016

5

found this helpful.

Add-ons


Similar Products

Best selling similar products

NVX VAD10004

• 150 watts x 4 channel @ 4 ohms
• 250 watts x 4 channel @ 2 ohms
• Bridged: 500 watts x 2 channel @ 4 ohms
• Total RMS Power: 1000 watts
• CEA-2006 Compliant
• Class D 2 ohms Stable 4-Channel-Channel Amplifier

(14)

$279.99

JL Audio XD400/4v2

• 75 watts x 4 channel @ 4 ohms
• 100 watts x 4 channel @ 2 ohms
• Bridged: 200 watts x 2 channel @ 4 ohms
• Total RMS Power: 400 watts
• Class D 2 ohms Stable 4-Channel Amplifier

(9)

$349.99

NVX VADM4

• 400 Watt True RMS Output!
• Marine Certified 4-Channel Micro Class D Amplifier
• 75W x 4-Chan. @ 4 ohms
• 100W x 4-Chan. @ 2 ohms
• 3-Way System Protection
• 4/2 Channel Operation
• 8 Gauge Power and Ground Inputs
• Extremely Small Footprint!

(31)

$189.99

Related Searches


SA 90.4 small

Item added to your cart.

Price: $159.99

Essential add-ons
Belva BAK84

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

$59.99

$34.99

Add to cart
Belva BPK8

8 Gauge Premium (CCA) Copper Clad Aluminum Amplifier Power Wiring Kit with Speaker Wire

$39.99

$19.99

Add to cart
Stinger SK4281

8 Gauge Power Amplifier Installation Kit

$69.00

$33.99

Add to cart
StreetWires ZN1K-08

8 Gauge Amplifier Power Installation Kit

$43.95

$39.95

Add to cart
Stinger SK6281

8 Gauge Power Amplifier Installation Kit

$83.00

$42.99

Add to cart
Universal Remote Bass Level Control Knob

Flush Mount & Universal via RCA. Works with any amp, controls your bass output

$14.99

$7.99

Add to cart
4 inputs / 4 outputs High Voltage Active Line Output Converter with Impedance Matching and Remote Level Control

The XLOC44X helps you easily integrate with your factory or aftermarket system

$149.99

$64.99

Add to cart
NVX XIX45 X-Series RCA Interconnect Cable

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

$44.99

$20.99

Add to cart
NVX V-Series RCA Interconnect Cable

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

$32.99

$15.99

Add to cart
80 Amp Smart Relay Isolator (XSBI80)

Smart isolator - Monitors and auto-charging feature!

$49.99

$24.99

Add to cart
80 Amp Relay Isolator (BIR80)

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

$19.99

$14.99

Add to cart
200 Amp Smart Relay Isolator (XSBI200)

Smart isolator - Monitors and auto-charging feature!

$79.99

$54.99

Add to cart
500 Amp Smart Relay Isolator (XSBI500)

Smart isolator - Monitors and auto-charging feature!

$99.99

$74.99

Add to cart
500 Amp Relay Isolator (BIR500)

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

$89.99

$65.99

Add to cart
Belva Nine Function Digital Multimeter

Perfect for any installation and troubleshooting

$29.99

$9.99

Add to cart
Six Function Digital Multimeter

Perfect for every toolbox

$14.99

$6.99

Add to cart
Steve Meade Designs IM-SG

Impedance Meter / Signal Generator

$461.99

$451.99

Add to cart
SMD DD-1 Distortion Detector

Set your gains like a Pro, accurately and quickly

$207.99

$199.99

Add to cart
SMD CC-1 Crossover Calibrator

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

$195.99

$192.99

Add to cart
World's Smallest AFS / Mini ANL Fuse Holder

Accepts 4 gauge or 8-gauge wire

$19.99

$10.99

Add to cart
4/8 Gauge Mini ANL (MANL, AFS) Fuse Holder

4/8 Gauge Mini ANL (MANL, AFS) Fuse Holder

$9.99

$6.99

Add to cart
High Quality Element Resistant AGU Fuse Holder

Belva BAGUH2 AGU Fuse Holder

$9.99

$4.99

Add to cart
4/8 Gauge AGU Fuse Holder

4/8 Gauge AGU Fuse Holder

$9.99

$6.99

Add to cart
Modular Linkable ANL Fuse Block

Modular Linkable ANL Fuse Block

$59.99

$16.99

Add to cart
4/8 Gauge Mini-ANL/MANL/AFS Fuse Holder

4/8 Gauge Mini-ANL/MANL/AFS Fuse Holder

$9.99

$8.99

Add to cart
4 Pack of 80 Amp Nickel-Plated MANL Fuse

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

$8.99

$3.99

Add to cart
4 Pack of 100 Amp Nickel-Plated MANL Fuse

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

$8.99

$3.99

Add to cart
2 Pack of 100 Amp Nickel-Plated ANL Fuse

ANL 100A Nickel plated for better power transfer

$7.99

$3.99

Add to cart
2 Pack of 200 Amp Nickel-Plated ANL Fuse

Two fuses per order. High quality 200 Amp ANL Fuses

$7.99

$3.99

Add to cart
2 Pack of 300 Amp Nickel-Plated ANL Fuse

Two fuses per order. High quality 300 Amp ANL Fuses

$7.99

$3.99

Add to cart
Pair of 8 Gauge Spade Terminals, #8 Opening

Spade Terminals • 8 Gauge • 1 Red & 1 Black • Nickel Plated

$9.99

$2.49

Add to cart
8 Gauge Ring Terminals, 5/16" Opening

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

$7.99

$2.99

Add to cart
NVX VUBT2

Universal Bluetooth Audio Receiver

$49.99

$39.99

Add to cart
Marine Grade Bluetooth Audio Controller/Receiver

Marine Grade Bluetooth Audio Controller/Receiver

$62.49

$48.99

Add to cart
NVX XUBT3

Universal Bluetooth Audio Receiver & Volume/Playback Controller Knob

$99.99

$59.99

Add to cart
Save up to 10 different vehicles in your garage

Loading...
Identify your vehicle and submodel details
  • Owner’s manual
  • Vehicle’s insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver’s side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon