A composite digital recording system using linear 8-bit sampling at 4fSc and ½-inch metal particle tape. The small cassette offers 64 minutes playing time and the large 125 minutes. An extra large cassette provides 245 minutes.
The format includes 4 digital audio channels with 48 kHz sampling and 16 to 20 bit quantising. The video signal processing is similar to that of D2. Azimuth recording is used with guard bands when editing.