00 Void is Sunn's second album, and it's no huge departure from their first one, The Grimmrobe Demos. They are still creating sludgy, Wall of Sound drones out of down-tuned guitar and bass feedback like before, although this time around the production does a better job at capturing the extreme low-end aspect of their sound. Turn your stereo up with this one, and provided you have a half-decent pair of speakers, it will rattle the walls and make the whole room seem like it's vibrating. And that's really the most impressive thing about this disc -- that is, its sheer room-engulfing sonic power. One can sit and analyze how well Sunn combines the various layers of feedback or how they are able to create such a strong sense of doom and ugliness with their music. And those things are true, but ultimately this stuff is all about the physical power of sound -- it's ambient music straight from hell. Play loud.