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Kicker KX850.4

KX-Series 04KX850.4 4-Channel Amplifier

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The product on this page is discontinued.
Free Kicker active-style headphones with a purchase of $100+ of Kicker gear
  • 4-Channel KX-Series Power Amplifier
  • Low Impedance Operation
  • SORT Protection Circuitry (Short circuit, Over-voltage, Reverse polarity, Thermal)
  • MOSFET Power Supply
  • KickBass: 0-18 dB @ 40 Hz
  • Built-In VarLow-Pass operation (50-200 Hz)
  • High & Low level inputs
  • Custom tooled gold plated connectors
  • SAMS (Stereo And Mono Simultaneously) bridged mono load and a stereo load at the same time
  • Cast aluminum EndKaps
  • RMS Power Ratings:
    • 14.4V:
      • 175 watts x 4 chan. @ 4 ohms
      • 215 watts x 4 chan. @ 2 ohms
      • 425 watts x 2 chan. @ 4 ohms
    • 12.5V:
      • 90 watts x 4 chan. @ 4 ohms
      • 180 watts x 4 chan. @ 2 ohms
      • 325 watts x 2 chan. @ 4 ohms
  • Input gain control: Low Level (170mV - 5V), High Level (340mV - 10V)
  • Dimensions: 25.75" L x 10-1/8" W x 2.5" H
  • Authorized Internet Dealer
  • 2-Year Authorized Manufacturer's warranty
Product History:
Kicker 08ZX850.4 thumbnail
(newest, current model)
Kicker ZX850.4 thumbnail
(previous model, replaced by Kicker 08ZX850.4)
Kicker KX850.4 thumbnail
(previous model, replaced by Kicker ZX850.4)

Sonic Electronix, Inc. can only ship Kicker products within the United States of America.

Power Specifications - Full Range Channels
RMS Power @ 4 ohms175 watts x 4 channels
RMS Power @ 2 ohms215 watts x 4 channels
RMS Power @ 1 ohmNot Stable
Bridged RMS Power425 watts x 2 channels
Peak Power Output850 watts
Amplifier Specifications
Number of Channels4
Total RMS Power Output860 watts
Minimum Impedance Unbridged2 ohms
Minimum Impedance Bridged4 ohms
THD at Rated RMS Power0.5%
Speaker Level InputsYes
Preamp OutputsNo
Built-in CrossoverLow-pass (LP)
High-pass (HP)
High-Pass Crossover Frequency50 - 200 Hz
Low-Pass Crossover Frequency50 - 200 Hz
Subsonic FilterN/A
Signal-to-Noise Ratio95 dB
Channel SeparationN/A
Bass Boost0 - 18 dB @ 40 Hz
Bass/Gain RemoteN/A
Fan CooledNo
Fuse Rating120A
Warranty and Return Policy
Return Policy Standard Return Policy
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Product Summary

Manufacturer: Kicker
Model number: KX850.4
UPC: 713034016120
Weight: 19.20 lbs
Internal SKU: 04kx8504
Internal product ID: 3585

Why Sonic Electronix?

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Customer Testimonial

The customer service here was great and their products came as advertised. I would shop here again.

- Sal from Porterville, CA

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