O sabre de luz de Kylo Ren soa tão cru e animalesco, porque deveria espelhar suas próprias habilidades cruas e irrestritas.
David Acord, um designer de som para The Force Awakens explicou isso em uma entrevista com Nerdist :
David Acord: I think the most obvious new sound effect in the movie is Kylo’s lightsaber. We were attempting, along with his Force power effect, to create sound effects that would mimic his persona, which is this raw power he has that’s not quite formed. He’s not well trained, but he’s extremely powerful. It’s a little wild and dangerous. The sword itself, the look of the sword has the extra darts coming out the side, and it’s really sparky and wavery and it looks a little homemade. The idea of the sound was to match that–something that sounds like raw energy, just pure power, very brutal and kind of wild and dangerous sounding.