Dark cinematic horror audio, ultra-deep demonic male voice, layered growls and subharmonic throat singing, slow and menacing delivery. The voice sounds ancient, powerful, and infernal, with heavy distortion, cavernous reverb, low-frequency rumble, and subtle echo trails. Background atmosphere of distant explosions, burning ambience, crackling fire, and low ominous drones.
The demon speaks slowly and threateningly:
Emphasize deep bass resonance, gritty texture, monstrous breath between words, cinematic trailer style, apocalyptic mood, surround sound feeling, dark fantasy underworld vibe. Very intense, dramatic, terrifying, 4D audio illusion, professional horror sound design.