I gave it a try and so far no good results at all. My own “master” sounds much better, actually both louder and less compressed than the auto-master regardless of how much headroom i give it.
This is not something i would recommend for mastering your tracks, but it might perhaps be useful for making a reference track, so that you may compare it with your own mastering progress. As i often find that i make bad decisions on “tired” ears this could be a way to test if i’m on the right track or if i’m way off and need to relax my ears a bit before continuing.
Mastering isn’t something i spend much time on because i try to do as much as possible in the mix instead. Once i got a mix i’m ok with, i experiment with some VSTs like the above mentioned plugins. I usually use FerricTDS as the last plugin in the chain experimenting around the “mastering” presets as i find it to work quite well at preventing clipping and smoothing out harshness introduced earlier in the chain.
I’m starting to get a better understanding of the frequency spectrum and how important it is to get the mix right and this very simple fact: More volume doesn’t necessarily mean louder.
Less bass can sound a lot beefier for instance, add a HP filter to every track that doesn’t need the bass frequencies, turn it up as far as possible. The point is that you want to remove the frequencies you can’t distinctively hear in the mix, but which steals headroom for the kick and bass and such. It’s very important with the bass frequencies, but the same thing applies to the high and mid frequencies also depending on what you’re mixing. I would be careful using a LP filter for this purpose though, often i would recommend using EQ to dampen the frequencies instead of filtering straight off, but this again depends on the rest of the mix.
A thumb of rule could be something like: If you can’t hear it, remove it.