1521 Oktalyzer Audio file Audio Oktalyzer is an audio sequencer developed by Armin Sander for the Amiga in 1989. Note, this is an Amiga filetype, where the 'extension' is a prefix rather than suffix, hence most Oktalyzer files will follow the okt.filename convention. 1 Digital Preservation Department / The National Archives 12 Feb 2015 12 Feb 2015 fmt/722 PUID okt File extension 1048 Oktalyzer BOF: OKTASONG 1 Absolute from BOF 0 0 4F4B5441534F4E47