I think the much earlier OJC's would almost have to be analog. In fact, most of the Miles and Trane I have bought were done in 1983 and 1984. Why would you assume they are digital? There are the 70's twofers as well. The early green label Prestige sound pretty damn great. That said, I normally only buy the early OJC's. However, I have a few digital lp's like Art Pepper's More For Les and Art Farmer's BIOMY, Strayhorn trib and PhD. These were all bought for such little $$ that I could care less that they are digital. They sould fantastic.