Earthquake Mono Block 700 Watts Amplifier Rack Mountable


  • $1,079.95
GST included.

Earthquake XJ-700R is a ruggedly constructed high quality professional subwoofer amplifier equally suited for home or professional use. It is ideal for heavy duty sub-woofer application, powerhouse for multiple tactile transducers, and a variety of other home and studio applications. The XJ-700R is designed to exceed the highest expectations for audio amplification.

Keywords describing the XJ-700R are: flexibility, power,control, and adaptability. It is the perfect amplifier for the advanced enthusiast who wants full control and ability to adjust all parameters of operation. Similarly, it can easily be used by the novice user who wants large amounts of power from a compact and efficient amplifier. The XJ-700R is passively cooled for silent operation. The brute force of the XJ-700R springs from the class "J" circuitry. Earthquake patented Class "J" technology manifests as a "quantum leap" in amplifier technology.

The revolutionary Class "J" circuitry combines high efficiency (99%) with an extraordinary bass control. Class "J" is an evolution of PWM technology, it combines advanced multi-level digital feedback with an intelligent controller (DCDC). It modulates the power supply voltage and output switching frequency in real time based on the frequency and amplitude of the input signal.

This added level of intelligence results in several obvious advantages: increased thermal headroom through the amplifier's optimum energy use, dramatically improved bass response and dynamic power capabilities. This results in a harder more solid audible impact that adds a drive to the sound normally experienced only at live concerts. We invite you to experience the immense power and superior sound quality of the XJ-700R


  • IR Remote control
  • Power Output:
    • 1 x 400 watts RMS @ 8-Ohms loads
    • 1 x 700 watts RMS @ 4-Ohms loads
  • Frequency Response: 18Hz - 160Hz
  • Low Pass Variable Filter: 40Hz-160Hz
  • Built-in Boundary Equalizer
  • Music & Movie modes
  • Three Power Modes: ON / AUTO / 12V Trigger
  • Signal To Noise Ratio: > 112dB (balanced) 108dB (unbalanced) @ rated power
  • Load Impedance: 4Ω or greater
  • Input Connection: RCA
  • Output Connection: Binding posts (class 2 wiring)
  • Rack Mount Space: 1U
  • Dimensions:
    • H 45mm x W 432mm x D 267mm
    • Weight: 8.95 Kg


  • 1 x 400 watts RMS @ 8-Ohms loads
  • 1 x 700 watts RMS @ 4-Ohms loads
  • Input Connection: RCA
  • Rack Mount Space: 1U

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