MasteringBOX, Welcome to Free on-line Mastering

Thank you for trying MasteringBOX, a Free on-line Mastering tool that provides a simple way for amateur producers and independent artists to Master their tracks.

We know Mastering can be tough to understand, and it has a slow learning curve. We are enthusiasts of music and we want to help other musicians making the production process easier.

This is why we created MasteringBOX, the result of years of work and experience in the field. There’s still a lot of room for improvement, and we will continue to work on our Mastering process to bring it to the Max level.

MasteringBOX provides a simple way to Master your tracks, providing better sound and proper loudness to your mix with a drag&drop and easy to use Mastering. You can achieve great results that can compare to professional studio work.

Now there’s a wide new range of possibilities for producers and musicians: Just upload your song, podcast or live recording, and have it mastered in less than a minute.

We’ve designed a complex algorithm to analyze, detect and apply different settings to each unique song. The key of a good Mastering is to look after the small details, this is why we focus on detecting what each individual track needs to improve the process.


People like choices, we want to control the result. This is why we developed a simple but powerful Loudness Control. You just change the desired Target Loudness and the system will adjust the settings of compression and limiting to make this happen.

This is an important feature because you’ll want similar levels in all the tracks in the same album.

PRO users can also adjust EQ with a 3 knob EQ Control. Low, Mid and Hi gain parameters can be changed. This is similar to a shelving EQ but the central frequency and Q settings of each band are dynamically set by the system depending on the track’s spectral response.

MasteriBOX offers a Free account with unlimited MP3 masters and Loudness Control.

There’re extended features for PRO subscriptions like uncompressed WAV output and EQ Control. Upgrade your account to “PRO Account” for 9€/month and get 5 uncompressed WAV masters. Or subscribe to “PRO Unlimited” and enjoy unlimited WAV masters for 19€/month.

Post Image under Creative Commons Attribute License by Nan Palmero

Leave a Reply

  1. joel stolarski says:

    Got an error Error 011

  2. sitaram says:

    sir not work pament adwans

  3. didac says:

    Hi! Please send us an email to with your issue and we’ll help you.

  4. mahesh sunu says:


  5. workablob says:

    One track done and now I haver to pay?

  6. Khanyisani Cele says:

    Hi!let me hope you are well.Thanks alot for a remarkable advice.

  7. rafagon08 says:

    Me ha servido de mucha utilidad LAS MASTERIZACIONES EXCELENYES

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