That's the beauty of paraliminals. They don't have any brainwave enhancement beats or waves. They just quieten you mind with Paul taking you down to a relaxed state of mind, the double voice and bit of music making it a pleasurable experience. They work well on their own probably because they don't try to push the mind to a level you don't want to experience at the time. With the proteus you can give them variety making them a new experience.
I myself have had some remarkable results using them with the proteus.
Alex
