Earthquake’s XJ-700DSP is the newest addition to the XJ Series of home and professional audio amplification. Like the XJ-700R, it addresses the need to correctly adjust a room to precision audiophile status, but now with the added benefits of controlling the DSP from your finger tips via a mobile app. You can take full advantage of what this subwoofer amplifier has to offer by making on-the-fly adjustments for the utmost in sound quality and user control with features like auto room correction and up to 60dB/Oct filters.

The XJ-700DSP has a unique built-in Boundary EQ designed to remove exaggerated boomy sounds created by corner loading, large wall surfaces, or installations inside custom cabinetry; other amplifiers try to equalize the room only by adjusting the volume. This amplifier addresses the actual phase correction problem along with the room EQ. The XJ-700DSP can also power multiple tactile transducers like Earthquake’s Q10B, as well as high response subwoofers like the patented THOR in-wall shallow subwoofer making it an extremely versatile option. Additionally, users may also connect any other passive subwoofer/s to this amplifier.

The XJ-700DSP is ideal for handling heavy-duty subwoofer applications to driving the equipment of everyday home audio enthusiasts and professionals. It was designed to exceed the highest expectations in audio amplification for folks who desire full control and ability to adjust all parameters of operation. With the new XJ-700DSP, a customized room response has never been easier.


  • App Controlled DSP (iWoofer™ Pro recommended)
  • Class J Circuitry
  • Built-in Boundary Equalizer
  • 0–180° Phase Adjustment
  • DSP ON/OFF Switch
  • Movie/Music Mode Preset Button
  • ON/AUTO/+12V Signal Sensing
  • Frequency Response: 18Hz–160Hz
  • Low Pass Variable Filter: 40Hz–160Hz
  • Power Output:
    1 x 700 WRMS @ 4-Ohm
    1 x 400 WRMS @ 8-Ohm
  • Output Connections: RCA
  • Output Connections:
    5-Way binding posts
  • THD: < 0.02% (1W/4-Ohm)
  • S/N:
    > 112dB (balanced)
    > 108dB (unbalanced)
  • Load Impedance: 4-Ohms or greater
  • Damping Factor: > 500
  • Slew Rate: 50 V/ms
  • Rack Mountable (1U space)


  • 1 x XJ-700DSP amplifier
  • 1 x IR Remote
  • 2 x 1U rack mount brackets
  • 1 x product manual


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