VPS Scope

VPS Scope free spectrum-analyzer | scope-analyzer | correlation-meter by Vengeance Sound

VPS Scope is a free spectrum analyzer and scope analyzer and correlation meter VST, VST3, Audio Unit, AAX plugin developed by Vengeance Sound. Compatible OS(s): Windows 64b, macOS.

VPS Scope is an analyser plugin with scope, spectral and stereo analysis:

  • supports different VU metering modes.
  • synced & free running, zoomable realtime waveform.
  • fft analyzer (line, bar, band size configurable).
  • rotatable 3d spectral display.
  • stereo vector-scope, Correlation, M/S modes.
  • many options and configurations.
  • available in VST, VST3, AAX and AU format.

This plugin is free for all customers. This means you need to have at least 1 Vengeance license key on your dongle to use it. Which one does not matter.

{See video at top of page}


Vectorscope 2

Vectorscope 2 free vectorscope | correlation-meter by Audec

Vectorscope 2 is a free vectorscope and correlation meter VST3, Audio Unit plugin developed by Audec. Compatible OS(s): Windows 64b, macOS.


  • Vectorscope.
  • Correlation Meter (Right).
  • L/R Balance Meter (Bottom).
  • Resizable window.

Price: Free.



Gonio free correlation-meter | oscilloscope by UKM

Gonio is a free correlation meter and oscilloscope VST plugin developed by UKM. Compatible OS(s): Windows.

Gonio3 is a simple vector oscilloscope with correlation graph for evaluation of the stereo image of your audio signal.



Correlometer free correlation-meter by Voxengo

Correlometer is a free correlation meter VST, VST3, Audio Unit, AAX plugin developed by Voxengo. Compatible OS(s): Windows 64b, macOS.

Correlometer is an analog-style stereo multi-band correlation meter plug-in based on the correlation meter found in the PHA-979 phase-alignment plugin.

Multi-band correlation meter is an advanced way to check for presence of out-of-phase elements in the mix. Broadband correlation metering reports overall phase issues and may misrepresent problems present in select spectral bands, while multi-band correlation meter easily highlights problems present in mid to high frequencies that are not easily heard by ear, but may still reduce clarity of the mix. Another application of multi-band correlation metering is phase- and time-aligning of channels and tracks, especially bass and bass-drum pairs, guitar mic and D.I. source pairs, two-microphone stereo recordings, etc.

Correlometer can display 4 to 64 individual spectral bands, with adjustable band quality factor that controls the degree of band’s selectivity. Averaging time of correlation estimator can be adjusted. Correlometer supports side-chain inputs for easy correlation estimation between separate audio tracks.

Correlometer features:

  • 4 to 64 band correlation meter.
  • Adjustable band quality factor.
  • Adjustable averaging time.
  • Side-chain input.
  • Resizable user interface.
  • All sample rates support.
  • Zero processing latency.
  • User interface color schemes.
  • Retina and HighDPI support.



+phasescope free correlation-meter by Soundhack


+phasescope is a standard studio tool for seeing the phase relation between your left and right channels.http://www.soundhack.com/