Compressed, 10-bit digital component format with similar specifications to Digital Betacam but not as popular. Introduced by Ampex in 1993. Cassette sizes and running times same as D-2, 13 micron tape thickness. Many users of this format claim that it has the best quality of the compressed formats. Machines are solidly built with gentle tape handling, and many are still in use ten years after their introduction. [MIC]