Some points you should consider in order to deliver an optimized mix for mastering:

Ideally
you work in AIFF or WAV format with a bit depth of 24-Bit and a fix sample rate between 48-96kHz from beginning to finish of your project and deliver your mix to me in this format. I can work with tracks up to 32-Bit float @ 384kHz.

Don’t worry if your material doesn’t meet those specs, I will get results with what you convey.

Do not up-sample
your files, always stick to the initial sample rate of your session. Please do not apply any dither or noise shaping to your final mix, I can take care of this using state of the art tools.

Do not normalize files
and do not add any processing such as limiting, compression, finalizing or additional equalization on the master bus. While dynamic processing will make sense when used for individual sounds or tracks used in the mix, it can literally seal off your material when applied to the master bus. As a result, there will be very little room left for good mastering.

In addition to this ‘clean’ version you can always send me your reference mix including master bus processing to give me an idea of what you are looking for.

Keep some headroom
to your final mix, try not to exceed -3dB. Think of this headroom as the sphere I will work in.

Leave a couple of seconds of ‘spare’ audio
before and after your actual piece of music. Detailed fade-I/-Os, final volume relations between tracks and playlist spacings are best done after the processing part of the mastering.

Name your tracks
Track 1, Track 2… for digital formats and CD, or Track A1, Track A2… for vinyl or cassette. We will stick to this convention during the mastering process, your titles and other tags are added to the DDP Image once you’ve agreed on a master.

Make sure
to send the final version of your mix, the version you are happy with and which you want me to work with. In case I will note a problem that has to be addressed from your side, we will discuss this before proceeding with the master.

Turnaround time
depending on the scale of your project is between 1-4 days after a session has started.

 Feel free to contact me with any questions you may have.  

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