A coveted piece of audio gear used by music industry douchebags to give a mix some balls. It is often rented out to producers and new artists to experiment with.
P3N15 is the letters and numbers(in what some call "Leet speak" or "1337 speak") for penis.
-0mg 101z, l1k3 u h4v3 a p3n15!
-Translation: Omg lols, like you have a penis!
-For the old folks: Oh my goodness hahahaha, it has come to my attention that you do not have a penis!