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Was: $1,299.95
Now: $699.95
4 reviews Write a Review
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  • Competition Grade

Introducing Power Surge - Surge Audio's flagship series of high power amplifiers. These models were designed from the ground up, to be anything other than average. PS Series amplifiers feature a military-grade PCB with the most copper tracing possible, added standoffs for extreme vibration resistance, and overbuilt transformers to withstand the heaviest of abuse.

Cooling is key. The PS Series heatsink was custom tooled to optimize cooling capacity. We made use of thermal modeling to determine the best thermal conductivity of our heatsink options. Beyond that, we have spaced the mounting feet 1/4" below the heatsink to allow for additional airflow below the backplate of the amplifier.

All PS Series amplifiers include silver plated Tiffany style RCA inputs, four-stage intelligent protection circuitry, and a remote bass knob with clipping, voltage, and temperature indication. 


Click HERE for PS Series Instruction Manual



  • High Efficiency Class D Monoblock Architecture  
  • 0.5 Ohm Stable & Covered Under Warranty
  • Subsonic Filter - 24dB Slope
  • Low Pass Filter - 24dB Slope
  • Bass Boost - 12dB Slope
  • Clipping Indicator
  • Dual 1/0 Power & Ground Inputs
  • Tiffany-Style RCA Inputs
  • 4-Stage Protection Circuit
  • Wired Remote with Clipping, Voltage, and Temperature Indication 



  • RMS Power @ 2 Ohms Strapped: 8,000 Watts (14.4V)
  • RMS Power @ 1 Ohm : 4,000 Watts (14.4V)
  • RMS Power @ 2 Ohms : 2,500 Watts (14.4V)
  • Frequency Response: 10Hz - 250Hz
  • Input Sensitivity: 0.2V - 6V
  • Signal to noise Ratio: 90dB
  • Minimum Impedance: 0.5 Ohm
  • Low Pass Filter: 35Hz - 250Hz
  • Subsonic Filter: 10Hz - 50Hz
  • T.H.D. Continuous @ 4ohm : 0.1%
  • Efficiency @ 4 Ohms: 90%
  • Operating Voltage : 9V - 16V 
  • Recommended Fuse Rating: 500A

4 Reviews

  • 5

    Posted by James Farr on 23rd Sep 2023

    Just got done installing this amplifier and just wow. It replaced a skar rp 4500.1, and the surge p4000 stomps all over it. Don't hesitate, this is a killer amp at a killer price!!!!

  • 5
    Surge Audio 4K

    Posted by Miguel Jimenez on 30th Mar 2023

    After owning so many Bass Amps I can truly say I finally found the winner Surge Audio 4K, this amp is so amazing that after setting my gains i can’t even get it to clip not even full tilt. I did not expect so much sound quality coming from a bass amp It reminds me of my D.C. Audio Amp but just much better, especially with that beautiful Bass knob that actually works perfectly. I could really tell the owner made sure that he did lots of research to make sure Surge Audio Amps are top notch bullet proof. (Don't think about it just buy it trust me this amp is the 1 of the best)

  • 5
    Bad as in a good thing

    Posted by BLANE GRAY on 26th Jan 2023

    This Amp is a beautiful well built amplifier. This thing is a beast!!!!! At .5 ohm I believe it’s probably running 7000 watts rms. I’m going to get another and daisy chain them. Thank you for such a great product

  • 5

    Posted by JOSHUA HENDRICKS on 25th Jan 2023