Panning is a useful tool for creating space in your mix. Utilizing mono signals can help free up stereo space and increase focus on high energy elements. In many scenarios it is recommended to place your kick, bass, snare and vocals in mono. These files may already be in mono but if they're not you can use the gain plugin to sum them from stereo to mono. This helps the fundamental elements of your mix become the focus of your music. This also minimizes changes to these instruments when you hear your mix in mono. You can use reverb and delay to enhance your vocals without affecting your mono signal. An effective way to do this is by employing a process called parallel processing. This is where you send your audio to a bus and place the reverb on the newly created auxiliary channel. You can then mix in as much reverb as you want without altering your original mono source.