It has been said time and time again that “size matters”. And in todays crowded and cluttered world the saying could never be truer. That is why Earthquake Sound has updated the best-selling XJ-300FR amplifier to have a 12V trigger. The XJ-300ST maintains characteristics of the small unimposing, connectable design while still packing all the power and flexibility that made the XJ-300FR so popular.

Keeping flexibility and spatial convenience in mind, Earthquake has kept their patented EQ Interlock design so that two amplifiers can be clicked together resulting in a 4-channel amplifier while only using 1U of rack space. The small size of the XJ-300ST is made even more convenient by its unbelievable amount of cool running power. Approaching 99% efficiency the XJ amp never gets hot, allowing it to be placed in tight rack surrounded by other components.

Endless configuration scenarios allow the XJ-300ST amplifier to be used as a mono (bridged) amplifier, 2.1 channel amplifier, 2-channel amplifiers 4/8/12 and 16-channel amplification with industry leading power density and efficiency.

To make the XJ-300ST even more user friendly than it already is, a 12V trigger has been added to the amplifier. This 12V trigger allows the user to power the amplifier through an outside source.

At only one rack U high and half a rack in width, plus the installation options makes this compact, versatile class J amplifier the go to amp for installers.


  • Compact size: 8 ½ in (W) x 8 in (D) x 1 7⁄8 in (H)
  • Wall or rack mountable
  • Class “J” Stereo Modular design
  • Auto Signal/Music Sensing
  • Built in room corrections and 0 – 180° phase adjustments
  • RCA input
  • +12V Trigger
  • Volume control
  • 50 – 160Hz built in crossover
  • 110V/220V Selectable


There are no reviews yet.

Be the first to review “Earthquake Sound XJ-300ST”

Your email address will not be published. Required fields are marked *