You can also use the multi band compressor to help level out the sound, which reduces the pressure on the maximizer/limiter. iZotope Ozone comes with multiple algorithms for different genres, from smooth to fast responses, and they all sound pretty good, as long as you don't push it too far. Many companies offer loudness maximizers, but the key is finding one with a great transparent algorithm, which can maximize the volume and reduce the audible artifacts. But tonally, you can always adjust things in the recording mix, but the loudness maximizer is always the biggest missing piece that turns a recorded piece into a finished one.

This is what most people think of when it comes to mastering, although there are other elements as well. I find myself using the loudness maximizer the most, which is the main effect that pushes the volume of the audio track as loud as possible. No matter, iZotope comes with plenty of presets for a variety of genres, and they are great starting points for your mastering needs. If you've never ventured into mastering before, some of these processes may seem familiar, but others can be a bit complicated. It has six different sections, including paragraphic eq, mastering reverb, multi band harmonic exciter, multi band dynamics, loudness maximizer, and multi band stereo imaging.

The iZotope Ozone 4 is a VST-based mastering suite that contains all the effects and plugins necessary for basic, home-studio mastering.

Izotope ozone 4 mastering