"Sub-bass 03" is an immersive auditory experience characterized by its focus on low-pitched frequencies. The central element of this audio is the profound, resonating bass, which provides a solid and pulsating foundation. The sound is deeply rooted in the drum-and-bass genre, featuring fast-paced rhythmic patterns that create an intense, energetic ambiance. Intertwined with the heavy sub-bass are elements of synth which introduce a layer of complexity, adding a melodic contrast to the deep, rumbling bass. The audio also exhibits influences of dubstep, seen in the wobble of the bass and the syncopated rhythms. Overall, it's a deep, resonating sub-bass composition that takes listeners on a journey through the darker, more atmospheric corners of electronic music.