https://www.head-fi.org/threads/sony-ier-z1r-new-flagship.886120/page-336#post-15158233 It’s a big improvement being that the bass was curtailed in. Now the 1Z and MDR combo has a cool defined bass character. Though take note the combo (while maybe better) is not a joining I use that much as I use IEMs more. So for me the move made the IER-Z1R better and MDR better but 3.02 is too thin and midcentric for my Encore IEMs. Really 3.01 had a more meaty lower midrange and sub-bass enhancement. I haven’t had time yet, but can only imagine the new tone will also be charming with the N3 and Z5 and additionally the Z7?