In this high-quality video tutorial, Kevin Anson, founder and frontman of The Video Course, teaches how to improve dialogue in Premiere Pro with a few simple techniques. He adds "steroids" to his dialogue tracks using the presets in Premiere Pro's Multiband Compressor. Kevin also quickly walks through his own audio setup for recording his voiceover, and offers several tips for recording better quality sound.
In this lesson/ tutorial, we'll be covering how to compress your audio in Premiere Pro. I'll show you how to add a Multiband Compressor and a Dynamics filter to enhance your dialogue, compress your narration, and basically improve your audio in Premiere Pro. —Kevin Anson, The Video Course
Source: https://youtu.be/f9pfLKvTG2s