A designation on prerecorded compact discs indicating that the contents were recorded in digital but mixed in analog before being mastered to a digital medium; compare AAD, ADD, DDD.
Dad wasn't a real militaristic kind of guy; he just felt bad that he wasn't able to fight in World War II on account of his handicap, although they did let him get through the several-hour-long army physical exam before they got to the very last test, which was for vision.