Dutch Radio4 Supplement is a 4 CD set of a radio broadcast of material by Coil, much of which is exclusive. The Amsterdam radio program on NPS, was broadcast on 2001 June 18, following Coil's live performance on 2001 June 01. The broadcast was then released by the studio as 4XCD set in a limited number of copies. This is not an official release, merely a promotional release by the radio station.