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Stereo Tool

Spectral Analysis by Flux

Free Product

The Complete Stereo Imaging and Analysis Tool 

Stereo Tool v3 features ultra precise control of input gain and individual pan for left and right channels. A phase inverter is available on each channel. Global stereo pan and stereo width settings are also implemented to complete the management of the stereo signal.
Stereo Tool v3 also offers accurate visual feedback reflecting the signal content. A vector scope display, PPM meters for both inputs and outputs, and a phase correlation meter permanently monitor the signal.
Inserting our Stereo Tool v3 after a BitterSweet v3, will open your mind to new ways of controlling the stereo stage.
Like all Flux:: plug-ins it features 64 bit internal floating point processing, up to 8 FS (384 KHz).


Signal Processing Features:

  • Output Gain, controlling the gain at the end of the processing
  • Bypass routes the incoming signal direct to the output for a true smooth transition between processed and clean signal

Three different transient processing modes:

  • Main, using a regular stereo signal scheme for the processing
  • Center, processing the Mid channel only, very efficient for snare and kick drums
  • Stereo, processing the Side channel only, very efficient for panned rhythmic/transient instruments

Preset/Parameter Slots

To enhance the workflow the two Preset/Parameter slots, A and B, can be loaded with two full set of parameters at the same time. Apart from saving each preset, a "Global Preset" containing both the A and B settings, and the position of the "Morphing Slider", can be saved.

System Requirements

Processing Specifications - Stereo Tool v3, as all Flux:: plug-ins, provide:

  • Up to 8 channels Input/Output*
  • 64-bits internal floating point processing
  • Sampling rate up to 384 kHz DXD (Pyramix & Ovation MassCore/Native)**
  • Sampling rate up to 192 kHz for native (AU/VST/AAX/AAX AudioSuite)
  • *Not when using Center and Stereo mode, as they are M/S modes requiring stereo operation


  • All major native formats are supported


  • Windows 7 SP1, 8, 8,1 and 10 all in both 32 and 64 bits
  • VST (2.4)
  • AAX Native
  • AAX AudioSuite
  • Waves WPAPI

Mac OS X (Intel):

  • 10.7.5, 10.8.5, 10.9.5, 10.10.5 and 10.11.5 in both 32 and 64 bits
  • VST (2.4)
  • AU
  • AAX Native
  • AAX AudioSuite
  • Waves WPAPI

Please Note:

  • Stereo Tool v3 AAX Native & AAX AudioSuite supports 32 bit in Pro Tools 10.3.5 and 64 bit in Pro Tools 11
  • Due to AVID ProTools changing to AAX, from Version 3 (v3) RTAS for AVID ProTools is no longer supported
  • No dongle or registration is required to run this software

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