PART 1:
Over-compressed
mix downs
Due to loudness normalization on streaming platforms,
the days of needing crazy loud mixes are thankfully over.
Dynamic is the new Loud!
Before the mastering session, I recommend removing anything doing a large amount of gain reduction (more than 4-6dB) on your main bus, especially ultra-maximizers like Waves L2/L3, FabFilter Pro-L, iZotope Ozone Limiter, etc.
If you like the flavor added by whatever mix bus processor/compressor/limiter you have, go ahead! However, I don’t recommend letting it do much more than 2 to 4dB of gain reduction.

A 6dB gain reduction is a change of -50% of the signals original amplitude.
Whether or not you use those maximization/limiter tools, my two main recommendations on getting the most out of your levels is to:
A) make your digital headroom great by leaving your maximum PEAK LEVELS somewhere between -9dB and -3dB on your main bus out. Then…

B) leave 18-12 dB Dynamic Range, which can be read on some meters by the distance between your peak maximum and the average RMS (Root Mean Square) level. Leaving your dynamic range this large makes it so that drums can hit harder! Also, with good headroom, loud sections can increase in average volume without clipping or feeling squished, and vocals/leads can breathe fresh air on the top of the mix..
