Razor Series 4 Channel Amplifier w/ Built-in DSP

Max Power (Watts)2,000
RMS Bridged @ 4Ω500 x 2
RMS Power @ 2Ω250 x 4
RMS Power @ 4Ω190 x 4



For those who want the most out of their car audio system, quality sound processing is a must. After some slight adjustments, your system can sound like it has been tuned by audio professionals. Razor DSP amplifiers offer similar sound processing options by including the functions of a Digital Sound Processor. Adjusting the DSP is easy, using an intuitive user interface. Connection to the DSP module is possible via USB connection to personal computers, or by Bluetooth to an available Android & iOS device App. Unlock the best from any system with Razor DSP amplifiers.

Are you using an original or factory radio? No problem, these amplifiers are equipped with an Automatic Hi-Level Signal Sensing Turn-On. There is no need to run a remote wire turn on; this amplifier will automatically detect the sound signal and turn on and off the amplifier. (Hi-Level Input only)


DSP Software Download:

Windows 7/10

iPhone (App Store) 

Android (Google Play Store)


Razor DSP Features:

  • Integrated 100dB Dynamic Range, -80dB THD+N ADC
  • Integrated 104dB Dynamic Range, -90dB THD+N DAC
  • User Friendly SigmaStudioTM User Interface w/ Response Display
  • 30V MAX 4-ch High Level & 4V MAX RCA Input Voltage
  • 2ch. RCA output for Subwoofer Amplifier Integration
  • Optional High-Level Input from Hands-Free Bluetooth Module
  • Optional Independent Input or Channel Mixing/Summing
  • Up to +6dB / -60dB Master Input Level
  • Up to -60dB Independent Channel Level Cut
  • Up to 20ms Independent Channel Delay, 0.05ms Increments
  • Independent Channel 0/180 Phase Control
  • Independent Channel High, Low or Bandpass Crossover
  • Independent Channel 6dB-48dB/Octave Crossover Slope
  • Variable Frequency Crossover Setting, 20Hz-20kHz
  • 10-Band Graphic Equalizer for Each Channel
  • 20dB Boost/Cut for Each Band
  • Variable Independent Band Q Adjustment, 0.4-9.6


General Features:

  • High-Efficiency Class D Full Range
  • Compact 4.75” Chassis Design for Installation Versatility
  • MOSFET Power Supply w/ Audiophile Grade IR Transistors
  • Military Grade SMT PCB Maintains Dynamic Performance
  • 2-ohm Stereo & 4-ohm Bridged Full Range Operation
  • Die-Cast Aluminum Alloy Heatsink for Optimum Dissipation
  • Direct Short, Thermal, & Overload Circuits Protect Amplifier
  • Variable 12dB High Pass, Low Pass, & Subsonic Crossovers
  • 200mV-6V Low-Level RCA Inputs
  • 4g Power Wire & 8g Speaker Wire Outputs
  • High-Level Input w/ Signal Sense Auto Turn-on
  • 12dB Bass Boost Increases Low Octave Harmonics


Razor Amplifier RZ4-2000DSPB
Max Power (Watts) 2,000 Watts
RMS Bridged @ 4Ω Bridged 2 x 500
RMS Power @ 2Ω 4 x 250
RMS Power @ 4Ω 4 x 190
Dimensions (1.625″H x 4.75″W) 11″