This set contains the most recent remasters (2011) and is a 2016 reissue. Sound is crisp as ELO can be. The box itself does not feel cheap and is made of good material. On the third day and out of the blue are gatefolds, the other three are high quality sleeves.
Overall, the only affordable mastered ELO set at the moment. I would recommend.
Really impressed by this CD package....all those individual albums as they would of been onrecord, in a box, with a booklet too.....very happy with purchase and they play well