Two DENON digital audio tapes. These are rare professional-use tapes, each with a 20-minute capacity. They are old, but in good condition as they have been stored in their boxes. However, they are unopened and their operation has not been confirmed, so their functionality is not guaranteed. They are rare items, with only a few results appearing on Google. According to the explanation from the Zetsumetsu Media Museum (Extinct Media Museum) -- quote: "Mainly used for studio recordings, broadcast masters, and demo tapes, they are characterized by high durability and low dropout design. Short-duration DATs were mainly used for listening samples, radio program materials, and reference sound sources, and their limited number makes them valuable evidence of the digital recording culture of the early 1990s." -- End quote. They are unopened and unused, but they are still considered used items. Please understand this and check the images before purchasing. * This product is only listed on Mercari. * The price will be reviewed from time to time, so please refrain from individual negotiations. * Recycled materials will be used for packaging. * Silent transactions are also welcome. In such cases, I will respond silently. * To prevent unnecessary trouble, I will not reserve items or create exclusive listings. * The items I handle are basically used items stored at home. * Please understand that all items are used. * I cannot guarantee against aging deterioration or overlooking hidden defects. * Returns and claims are not accepted after purchase. * Please purchase after understanding and agreeing based on the photos and questions. #DAT #Denon #ForDemo #Master