Calibration features

Take control of your sound with
Reference 4

Response Curve view

Add or remove various frequency response curve visualizations to your frequency graph. See your room sound before and after the correction, look at your left and right driver response individually or follow your overall phase alignment while using different filter modes.

Reference Curve Presets

Enhance your mixing and listening experience by choosing between our predefined reference curves and speaker simulations. Reference, guide and choose between several popular speaker simulations by tilting, adding or decreasing some bottom end.

Reference sound everywhere

Reference 4 Systemwide allows using calibrated sound for critical listening from any playback source. No more dragging files into your DAW project just to have a listen or figuring out how to check if your kick blasts as hard as the best of them on Soundcloud.

Mono Monitoring

Mono never left! There is a handy option to switch your mix to mono, but still maintaining a stereo correction, giving you an easy way to check if your mix will sound good in mono as well.

Avoid clipping

Our Audio Calibration Engine boosts some frequencies to fill in the frequency response dips, and to make your speakers sound precise. By flipping the “avoid clipping” switch you will ensure that your audio output does not get become distorted when calibrated.

Dry/Wet control

This is not a conventional Dry/Wet knob that is used to mix the effect in parallel! The correction curve is actually being smoothed out when you raise or lower this knob to gradually reduce or increase the effect of a calibration.

Filter modes

When audio is being filtered, be it analog or digital, these filters introduce phase changes to your audio signal. Thus, for ultimate flexibility you can select between different filter processing modes.

Minimum-Phase mode

More demanding on your computer, but will reduce latency to around 1ms. This mode is great for when you’re tracking new instruments to your audio project and need to concentrate on your performance.

Linear-Phase mode

Will not affect the natural phase response, but will introduce some latency. This is best suited for when you’re already at the mixing, mastering and post-production stage.

Mixed-phase mode

The “best of both worlds” solution offering good middle-ground between some latency and CPU load while processing.

Custom Reference

By default Reference 4 will correct your speakers to flat frequency response, but there are numerous options to simulate other systems as well. This is useful to check how your mixes will sound on other common audio systems.

Measurement features

Measure your speakers with ease

Easy Setup

Sonarworks Reference 4 has been optimized to work as a streamlined step-by-step process, which minimizes human error, therefore giving you better results. Each step has an informative description to help you through.

Microphone Calibration Input

It's the calibration that separates our mic from the crowd. Every Sonarworks measurement mic has been individually calibrated with an ANSI certified mic. Get your profile from our homepage and open it up before the measurement to ensure utmost precision.

Automatic Microphone Location Detection

Reference 4 software automatically locates the microphone in your room, and guides you where you should place it. The gives the best possible measurement quality, since the software knows where each measurement was made.


Our software costs a fraction of an acoustic
treatment project by an expert.

And possibly less than upgrading to new monitor speakers.


Best suited for sound creation on headphones

$ 99
  • Y DAW plugin for headphones
  • Y Systemwide app for headphones

Studio Edition

Full package to work on headphones and speakers in your studio

$ 249
  • Y DAW plugin for headphones and speakers
  • Y Systemwide app for headphones and speakers
  • Y Measurement software for speakers

Premium Bundle

Reference 4 Studio Edition and amazing pre-calibrated Sennheiser HD650 headphones

Starting from $ 699
  • Y DAW plugin for headphones and speakers
  • Y Systemwide app for headphones
  • Y Measurement software for speakers
  • Y Pre-calibrated Sennheiser HD650

Frequently asked questions

Yes, you can use any omni-directional condenser measurement microphone. For best calibration results, we recommend using an individually calibrated microphone.

Learn more

As the last plugin in the chain, remember to bypass before rendering audio.

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