1) We recommend having at least -6 db on the master bus
It doesn’t have to be exactly at -6 but this is a good average that we recommend.
Don’t worry if it sounds quiet as we bring the volume up to a commercial loudness during mastering.
This just ensures that the track isn’t clipping when you send it to us and gives us enough headroom to master the track. (You only need to lower the master volume channel not each individual track).
2) Tracks should be in WAV. or other high quality format
We recommend not uploading your tracks in mp3 format in order to maintain your tracks maximum quality.
3) Tracks cannot have any limiters or maximizers on the Final Master Bus
You can leave all other effects including any limiters on individual instrument channels and but you must remove any limiter or maximizers on the final master bus channel.