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RE Audio SA 90.4

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

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

Learn more about the sa904

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This item has been discontinued


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Product Highlights


• RMS Power: 63W x 4 @ 4 ohm, 85W x 4 @ 2 ohm
• 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 ohm: 63 watts x 4 chan.
    • 2 ohm: 85 watts x 4 chan.
    • Bridged, 4 ohm: 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

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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 ohm
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


RE Audio SA 90.4 thumbnail image

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

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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

13 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

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