Quad City Berlin is a comprehensive collection of extra-wide quadrophonic recordings from Berlin, Germany. It was created to work as an internationally usable library of urban ambiences and traffic sounds while still capturing the unique sounds of Berlin.

The recordings are mostly focused on large open spaces and the nice fat low-end hum of major city traffic. Locations include rooftops, main roads, squares, residential areas, parks, freeways and room ambiences.

The download includes the complete 6-channel recordings (four omnis + MS).