MasterQ Update for OS X Includes AudioUnit, RTAS Support

PSP has updated Mac OS X version of their MasterQ EQ VST plug-in to version 1.2.1, available free to registered users. At the same time it has been ported it to AudioUnit and RTAS format.

PSP MasterQ is a parametric equalizer designed to operate at sampling rates ranging from 44.1 to 192kHz. The plug-in (VST and DirectX for PC; AudioUnit, VST, RTAS for Mac OS X) contains seven filters: 12 or 24 dB/oct low cut and high cut filters, low shelf and high shelf filters, and low mid, middle and high mid peaking filters-all of them with adjustable frequency and Q factor over a wide range. The plug-in also includes a high precision EQ graph to display an overview of the EQ curve, as well as display the individual characteristics of each filter.


  • Processing using 64 double precision floating point computations
  • Up to 192kHz sample rates supported
  • 7 filters with pre-configured parameter ranges for easy use
  • EQ graph that displays an overall EQ curve and individual curves for each active filter
  • Set of example presets

Minimum system requirements:

  • Panther MacOS X v 10.3.5 or later / Tiger MacOS X 10.4.0 or later
  • G4 400 Mhz
  • 512 MB RAM
  • AudioUnit AudioUnit compatible host application
  • VST VST compatible host application
  • RTAS ProTools TDM 6.4 / ProTools LE 6.4 or later
  • High Color S-VGA, 1024x768

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