This is a topic of intense debate, since it is very much like EQ'ing...there are guidelines, but to do this well, you need to use your ears and a bit of experience. I will admit that I am a total rookie when it comes to multi-band compression. I have tried the one that comes with Sound Forge 5.0, and could never get anything musical to come out of it!!! <grin> I also use Wavelab (much more than Sound Forge, actually), and have finally ordered the 4.0 upgrade (it is *still* backordered!!! Grrrr...). This new upgrade comes with a new multi-band compressor which I am anxious to try to see if I can get some better results with my masters. I have also looked at the Waves C4, and the new C6 that comes with their Mastering Bundle, and they are both pricy alternatives for a complicated plug-in that I am not sure how to even begin using. I also know that Ozone has a bulit-in version, and probably T-Racks as well... Now to my questions! 1) Has anyone used the new Steinberg Multi-Band that is coming with Wavelab 4? What's the opinion? 2) Any general advice/guidelines for using a M-B Compressor??? Thanx!