L12X Free Solid State Amplifier Plugin

Audiority has announced the release of L12X, a free analog-modeled solid-state amplifier plugin for Windows and macOS.

The plugin has been inspired by the Marshall Lead 12 solid-state amplifier of the late ’80s.

The original head was an op-amp based amplifier: instead of using tubes or transistors, the op-amp is able to provide a huge amount of gain with very little or no distortion. However, when the amplified signal reaches the voltage applied to power the op-amp, it gets clipped. Marshall engineers exploited that to provide a great sounding amplifier with very few components.

This little solid-state head is able to push cabinets up to 4×12 and can easily sound like a JCM™. We modified the original circuit by adding a Contour knob (to get a more scooped tone) and an additional Boost overdrive stage. We also included an integrated Cab Simulator, loaded with a Marshall cabinet IR featuring Celestion V30 cones.


  • 2 channels (clean/boost)
  • 3 bands tone stack
  • contour
  • integrated cabinet simulator
  • resizable interface
  • no license file required

L12X is available as VST/AU/AAX plugin for Windows and macOS.

More information: Audiority

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