EX4R - 800 Watts RMS x 4 @ 4 Ohm 4 Channel Mega Amplifier

Sale price$ 654.99

Versatility is the name of the game with our EX4R “NANO EDGE” Series Amplifier. The EX4R is a Full Range Class D, Multi-Channel Amplifier capable of up to 1200 Watts X 4 RMS depending on system configuration. Even at 4 Ohms it will deliver a powerful 800 Watts RMS to each of 4 channels.

Crack open the compact case and you’ll find this EX4R uses our “Nano Block”, Mil- Spec, Double Sided PCB with Surface Mount Devices. Further inspection reveals our tried & true “N” drive MOSFET power supplies that ensure high performance for either casual listening or competition grade Sound Quality systems. We have left nothing to chance, this EX4R features our most advanced next generation 5 way protection circuitry and a Differential input switch to eliminate noise.

This compact “multi-tasker” incorporates a wide range of crossover adjustments including an X10 switch, allowing the Massive Audio EX4R to be programmed as either high pass or low pass using 3KHz adjustable steps Up or Down.  Additionally, if desired it may be used as a Band Pass crossover combining a high and low pass filter, this flexibility makes it the perfect choice when used with raw drivers by enabling more output control.

The EX4R includes many cutting edge features including a Differential Input Switch to eliminate noise, Clip Indicator for adjusting critical levels and RCA inputs capable of processing RCA or Speaker level signals up to 10 Volts! This built in OEM line converter eliminates the need for an additional component, reduces cost and is found in every “EDGE” Amplifier. The EX4R uses a DC off set music sensing system to activate the Auto Turn On Circuit.

  • Built-In OEM Line Converter
  • Clip Light Indicator
  • Differential Input Switch to Eliminate Noise 
  • 1,200 Watts x 4 RMS Power 
  • X1 / X10 Crossover Switching 
  • High Power in Extremely Small Heat Sink
  • Mil Spec Double Sided PCB with SMD Parts
  • Built-in Noise Reduction Circuitry
  • Full Mosfet with High Grade Switching Devices
  • Versatile Full Range Class D Technology
  • CTA-2006 Compliant
  • Built-in Auto Sensing Turn-on via Hi-Input
  • 12v Remote Output for External Devices
  • 0~12dB Variable Bass Boost
  • Next Gen Advanced 5 Way Protection

EX4R Manual


RMS Power @ 4 Ohm 800w x 4
RMS Power @ 2 Ohm 1,200w x 4
PEAK Power 1,600w x 4
Bridged RMS  2,400w x 2 @ 4 Ohm
Min Impedance 2 Ohm Stereo
Min Ohm Bridged 4 Ohm
THD <0.1% @ 4 Ohm
S/N >90 dB
Input Level 0.4~10V (Hi Inputs or Low Inputs)
Freq. Response 20Hz ~ 30KHz
LPF 20Hz ~ 250Hz / 200Hz ~ 2.5KHz
Subsonic Filter  20Hz ~ 300Hz / 200Hz ~ 3KHz
External Fuse 200A
Dimensions 14.09 (in) x 5.9 (in) x 2.1 (in)
Bass Remote n/a