Quadrant
There are a number of electronic artists under the name of Quadrant.
1. Quadrant is a one of a number of minimal/dub techno aliases used by Mark Ernestus and Moritz Von Oswald, best known as Basic Channel. Their best-known track under this moniker is "Infinition", though they have also released a number of other EPs.
2. Quadrant is a Drum and Bass group consisting of Leigh Caplan and Daniel Pollard. They have released a number of singles on various samplers and compilations.