Tull historians, are the 2011 and 2016 5.1 mixes the same mix?
The 5.1 mix itself is the same. The 2011 Blu-Ray was mastered by Peter Mew, while 2016 DVD is unmastered. Also, both the 5.1 and remixed 2.0 on the 2011 big box had a bunch of audio dropouts that I believe were corrected on the 2016 book set.