Your headphones. Remastered.

Sonarworks Reference 4 enables mixing and mastering on headphones with confidence.

Calibration online demo

Try it out. Hearing is Believing.

Plug your headphones in, select the model and take it for a spin

Your headphone frequency response curve

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Calibration is
headphone model specific

First select your headphone model

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Word from the industry

World class engineers use Sonarworks

A much needed new standard on headphone calibration and compatibility.
Rafa Sardina Producer, Mixing and Mastering Engineer
12 Grammy awards, 35 nominations, Stevie Wonder, Lady Gaga, Luis Miguel, Alejandro Sanz
I had practicality retired my HD600's when I came across Sonarworks. I downloaded the free demo and to my surprise the headphones came alive! I've now reincorporated them into my critical mix decision making. I can now carve out offensive frequencies plus add the perfect amount of weight and clarity to my mix with great confidence.
Abraham Martinez Mixer, Engineer
3 Latin Grammy Awards
With the Sonarworks headphone correction system, I can take my sessions on the road, and pick up right where I left off in the studio. The transition from monitors to headphones has never been smoother.
Christopher Tin Composer, Engineer
2 Grammy awards
After I discovered the Sonarworks Headphone plug-in, it became an indispensable tool when I’m using headphones to record, edit and mix. I like to work in-the-box on my laptop and this tool gives me more confidence and accuracy. Also it brought more freedom for the way I produce in a traditional studio environment.
Alê Siqueira Record producer
3 Latin Grammy Awards and the Musical Director of Olympics Closing Ceremony Rio 2016

The truth about studio headphones

Reference headphones don’t exist.

Every headphone sounds different due to physical properties and limitations of materials and composition. None is neutral enough for critical listening.

Frequency response graph of various high-end studio headphones
on off

We measure the sound of specific headphones and create a digital profile to correct them via DAW plugin. With the advanced technology of our DAW plugin, you get absolute accuracy with shocking simplicity.

Benefits of headphone calibration

Tap into the full potential of your headphones!

Hi-end studio sound from your headphones

Headphone calibration is the process of measuring and adjusting the frequency response of headphones in order to precisely match flat and neutral sounding studio monitors in a well treated studio. Standard studio headphones are transformed into perfectly-engineered precision devices. By giving yourself the gift of accurate sound, you can mix and master with total confidence.

Abbey Road on the road

Not all of life happens in comfortable studios. Take your reference sound where your work or inspiration takes you. Our digital solution delivers the accuracy you need, anywhere you are. Bring your headphones; bring your laptop. That’s it.

Collaborate with ease

Let’s get everyone on the same page, finally. All calibrated headphones retain the same tonal balance. We’d like to announce the official end of never ending arguments caused by different sound references.

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.

How it works

Reference 4.
Quick to set up, easy to use.


Download Reference 4

Run Reference 4 Systemwide or DAW plug-in


Select your headphones

Find your headphones in an evergrowing list of supported models.


Enjoy calibrated sound

Find out what you've been missing out. Brag about it!


Exceptional sound delivered through unprecedented innovation.

Sonarworks uses a set of patent-pending technologies developed in our laboratory to measure and calibrate headphones.

We perform each measurement process using our proprietary Headphone Acoustic Power (HAP) measurement system. The system is capable of measuring the frequency response from any pair of headphones as perceived by human ears.

In the press

The Sonarworks Reference plug-in makes a difference that is out of all proportion to its modest price, and is capable of turning an unremarkable pair of headphones into a serious mix tool.
SoundOnSound, May 2015 Issue
The result was huge, and massively for the better.
Attack Magazine, February 9th
Sonarworks Headphone Calibration software has not only upgraded my already brilliant KRK KNS8400 headphones but also given me back a workflow that for many years I wasn't comfortable using.
Pro Tools Expert, September 11th
The idea of making any pair of headphones flat and faithful is very appealing, especially for the price. And the fact that you can send in your headphones to have them measured pushes the concept even further.
Audiofanzine, June 17th

Choose your calibration type

Three ways to improve sound


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