In order to ensure the best results we highly recommend following the requierements below :

 1 - Your Mixdown shouldn't be too loud

Export it with at least 6dBfs Peaks of Headroom, lower is better your mastering tech will have the requiered tool to properly raise up your track where it needs to be.

Note : please do not compress/squash your mix, also you shouldn't lower your master fader. 
Your mixdown is too loud ? For small adjustments (0.5 to 3dB) you can lower your Buss (= Groups) Outputs while if you are far too loud you may have interest in to modifying your volume balance/gain staging (be carefull since it might change the input volumes in your effects, impliying to re-set some of them) 

2 - Export Settings :

            - your project sample rate (usually 44.1kHz or 48 kHz), 

            - project bit depth (usually 24bit / 32bit float or 16bit),

            - Normalisation / Dither DISABLED
- .wav or .aif (uncompressed format)

Note : For Stems Mastering, export your groups (Kick, Drums, Bass, Melo, Voxs, Sfxs, FXs returns) with the same settings. (Up to 8 stems max.)

Export your track with a few seconds of silence after it. 

3 - Make sure you are thruly happy on both creative and technical side of your mixdown.
Mastering isn't a place to fix major issues, you can ask your technician for a feedback on your track before he processes it which may allow you to do last minute changes if you feel so.
What is mastering ? 

4 - Should you keep or remove Mixbus/Master effects ?

Keep : 
Anything that serves the sound design / overall color of the track, 

Remove :
Eventual limiters / compressors added for monitoring or pre-mastering purpose,
Anything that doesn't make clearly a difference in the good way when enabled (if you are hesitating, remove it and tell you tech what you wanted to do/add !)

5 -  Provide the following informations

In a text file named "Infos.txt" include the following informations :             

            - Sample Rate,
            - Bit depth/Resolution,

            - Track Name,

            - Artist Name, 

            - Genre,

            - Year,
            - Composer/Arranger.

Join the text file along your audio files.

You can also provide those informations directly in your order's follow email/ticket if you prefer. 

They will help to ensure session is set up properly and will allow your technician to enter Metadatas & Credits directly. 

6 - Send your track(s) to your audio technician

You can use WeTransfer (up to 2Go) or (up to 15gb with free account, encrypted transfer) for file transfers.

With both platforms you will be able to send a download link in your order's related email/ticket. 

Note : An private web application for order follow & files transfers is currently in development. We hope too release it within the upcoming months.

If you have any questions, feel free to open a support ticket and we'll get back to you as soon as possible.