Release Date: 11/18/91
Achtung Baby was widely regarded as a sonic and visual reinvention of the band: a step too far in some territories, where Adam's nude image on the sleeve was covered with an appropriately fixed X or clover.
At U2's request, Achtung Baby was the first album by a major act to be released in two eco-friendly packages - the jewel box (without the long box attachment) and the cardboard Digi-Trak.
The Digi-Trak featured long-box sizes cardboard, which, once its shrink-wrap and two plastic struts are removed, folds around the CD. In Germany, Universal released a 2-CD box set with a copy of both Achtung Baby and Zooropa.