The paid field expands tremendously on what the guided meditation does and has countless layers added on top of the baseline intent under which it was created.
Earphones don’t matter as much as matching breathing and ensuring that you’re in an environment that is sufficiently quiet and free of negative energy to allow you to get into a deep meditative state as you follow along the audio’s instructions.(the embedded field will continue to work regardless, but following along offers better results)
Either way, both are unfathomably transformative.