day. They were used in the film industry and law enforcement, as the quality was superior to most portable audio recorders in that time period. The data portion embedded in the recording made it an excellent choice for law enforcement in addition to recording to a proprietary tape in a proprietary format. As digital technology evolved, and became accepted in US court systems, the NT2 was replaced by devices that recorded to internal drives and removable digital media. The new media was much more cost-effective, and yielded premium quality audio recordings at a lesser cost. It was also easier to make court admissible copies utilizing other media, besides NT2 cassettes. The devices are considered curiosities for collectors. Rebranded NT cassettes were used as the storage medium in the Datasonix Pereos backup system from 1994, claiming a capacity of up to 1.25 gigabytes per tape. Due to overhead and variable data compression ratios, the actual amount of data stored could be significantly below a gigabyte. Gallery See also DAT References Digital electronics Sony products Audiovisual introductions in 1992