Valhalla Room is a true stereo algorithmic reverb. It features twelve original reverberation algorithms including Dark reverb modes, Nostromo, Narcissus, Sulaco, and LV-426. ValhallaRoom is true stereo; the Early and Late reverb sections are both stereo-in, stereo-out. The spread of energy between the stereo channels can be controlled over time, which helps preserve the input spatial image.