An enormous machine. It makes either your mind or your voice immensely powerful. When I was using it, my voice did have that thundering quality, but it may have been a cinematic effect. I'm fairly certain the machine was evil. There were at least two women: one a matron, one a maid (who knows, left long enough, I may have encountered a crone). The machine was in what appeared to be a large cave that had been altered somewhat. The user strapped himself in at the head, hands, and feet to a giant disk that stood just off of being upright. The headpiece included a spike: I'm not sure if it pierced the head or not. It was a five-sided pyramid, the triangular sides of which were equilateral. I'm fairly certain it's function involved dark magic: there was a narrator going on about God and the Devil. At one point he said that God should be thankful to the Devil for sending him so many souls to judge.
I strapped into the device three times, but I only remember the third one. The matron, who had power like that of the machine, and I were squaring off, trying to destroy each other. I remember that the more descriptive I was, the more she was hurt, and vice versa, her to me. Ultimately, I turned her to dust. Then, later, I was holding a box with a spike like that of the machine, otherwise the size of a handheld tape recorder. For some reason, there was a fox on the dinner table, eating our food. I spoke into the device and offered it a choice to die. The fox then died.
I've done a rubbish job of explaining it. Oh well.