The Voxengo OldSkoolVerb effect adds an echo to sounds, making them last longer and seem like they are occurring in a cave. The Shifter effect deepens voices, so a shout would sound monster-like due to how low the voice is made by the effect.

1. Callum Drake
The Voxengo OldSkoolVerb effect gives the sound an echo
effect, such as, the sound is someone shouting giving it an
echo effect when the shouting is happening making it last
longer and sound like he’s in a cave,
The Shifter effect gives the sound of a deep voice effect,
such as, the sound is someone shouting and with the
shifter effect it makes the voice sound monster-like with
how deep it is.