Garage
Shop

Kicker SX900.4

SX 4-Channel Amplifier with Digital Sound Processing 04SX900.4

Kicker
Shop all Kicker
Product videos
highlight-star-icon

4-Channel Amplifier with Digital Signal Processing • 213W RMS x 4 @ 2 ohm • 425W RMS x 2 @ 4 Ohm • ISIS • BLAST Port • SAMS • UltraMatch Gain Structure • Kompressor • RCA Outputs

Learn more about the 04sx9004

We apologize

This item has been discontinued

Product Highlights


4-Channel Amplifier with Digital Signal Processing • 213W RMS x 4 @ 2 ohm • 425W RMS x 2 @ 4 Ohm • ISIS • BLAST Port • SAMS • UltraMatch Gain Structure • Kompressor • RCA Outputs

Description


Kicker brand icon

Authorized dealer

  • Kicker SX900.4 4-Channel Amplifier with DSP
  • 32-Bit User-Programmable Digital Signal Processing
  • RMS Power Rating:
    • 107 watts x 4 channels @ 4 Ohm
    • 213 watts x 4 channels @ 2 Ohm
    • 425 watts x 2 channels @ 4 Ohm Bridged
  • UltraMatch Gain Structure, single-band parametric KickEQ (Variable Gain, Boost, and Q), and crossovers ( Variable High and Low-Pass Filters )
  • SAMS (Stereo And Mono Simultaneously)
  • ISIS (Indicate Status & Input Settings) Interface
  • BLAST Port (Bass Level And Signal Transfer) Provides Remote Bass Level Control and control signal transfer between multiple SX amplifiers
  • Kompressor
  • Adjustable Phase Control: 0 - 180°
  • EndKaps: Cast aluminum, custom, removable covers to protect and hide all your wiring connections to the amplifier
  • SickBay and On Board Diagnostics
  • Frequency Response: 20 Hz - 200 kHz
  • Variable Input Sensitivity: 1V / 2V / 4V / 8V / 16V
  • Signal-to-Noise Ratio: >100 dB
  • MOSFET Power Supply
  • RCA Outputs: 1 Pair
  • Remote Gain Control
  • Fan Cooling
  • Dimensions (With Endcaps): 25-3/4" L x 10" W x 2-1/2" H
  • Authorized Internet Dealer
  • 2-year Manufacturer's warranty

Best selling similar products

VADM4v2 small

NVX VADM4 v2 (VADM4v2)

• 80 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(41)

$209.99

List price $239.99

NDA6004 small

NVX NDA6004

• 100 watts x 4 channel @ 4 ohm
• 160 watts x 4 channel @ 2 ohm
• Bridged: 320 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(14)

$159.99

List price $215.99

MFA 4.220 small

Deaf Bonce MFA 4.220

• 220 watts x 4 channel @ 4 ohm
• 330 watts x 4 channel @ 2 ohm
• Bridged: 660 watts x 2 channel @ 4 ohm
• Total RMS Power: 1320 watts
• Class D 2 ohm Stable 4-Channel Amplifier

$289.90

List price $289.90

RD400/4 small

JL Audio RD400/4

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

(28)

$379.99

List price $379.99

MFA 4.180 small

Deaf Bonce MFA 4.180

• 180 watts x 4 channel @ 4 ohm
• 270 watts x 4 channel @ 2 ohm
• Bridged: 540 watts x 2 channel @ 4 ohm
• Total RMS Power: 1080 watts
• Class D 2 ohm Stable 4-Channel Amplifier

$259.90

List price $259.90

JD400/4 small

JL Audio JD400/4

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

(34)

$299.99

List price $299.99

VAD10004v2 small

NVX VAD10004 v2 (VAD10004v2)

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

(24)

$279.99

List price $335.99

MVPA4 small

NVX MVPA4

• 100 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(70)

$279.99

List price $383.99

AP200/4BT small

JL Audio AP200/4BT

• 40 watts x 4 channel @ 4 ohm
• 50 watts x 4 channel @ 2 ohm
• Bridged: 100 watts x 4 channel @ 4 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable 4-Channel Amplifier

$549.99

List price $659.99

Specifications & Details


Power Specifications - Full Range Channels
RMS Power @ 4 ohms
107 watts x 4 channel
RMS Power @ 2 ohms
213 watts x 4 channel
RMS Power @ 1 ohm
Not Stable
Bridged RMS Power
425 watts x 2 channel
Amplifier Specifications
Number of Channels
4-Channel
Total RMS Power Output
852 watts
Minimum Impedance Unbridged
2 ohm
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
0.02%
Speaker Level Inputs
No
Preamp Outputs
1 Pair
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
High-Pass Crossover Frequency
10 - 16000 Hz
Low-Pass Crossover Frequency
30 - 20000 Hz
Signal-to-Noise Ratio
>100 dB
Bass Boost
-18 -- +18 dB
Remote bass/level controller
Yes
Fuse Rating
40A x 3 

Item Details


Manufacturer:

Model Number:

SX900.4

Weight:

20.05lbs

Internal SKU:

04sx9004

Internal Product ID:

1531

Product and How-to Videos


Customer Ratings & Reviews


Kicker SX900.4 thumbnail image

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



Durability
0
Value
0
Features
0
Design
0
Usability
0

Customer Reviews

Sort by:

Loading...
Sorry, no reviews found


IB-T small

Omega IB-T

Transponder Bypass for 1998-2005 Toyota/Lexus Vehicles

$17.99

List price $43.99

F2.2500 small

Sound Storm (SSL) F2.2500 R/B

2500W Max, 2-Channel Amplifier

$119.99

List price $299.99

Related Searches


Save up to 10 different vehicles in your garage

Add vehicle
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

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.