Ambient ASF-1 Hydrophone Test Denmark 29 June 2022 08:13 Updated April 23th, 2015 Ambient ASF-1 - Hydrophone Test 2 - Denmark from Ambient Recording on Vimeo. Related articles Ambient ASF-2 Hydrophone Test Hamburg Ambient ASF-1 Hydrophone Test 3 - Norway An ocean full of sounds Tonsturm Panavision Millennium DXL with Ambient ACN