This DVD has real problems with bass. Im surprised no one else mentioned it, perhaps they are all die hard U2 fans! It has three sound tracks, PCM, DTS and dolby digital. The standard PCM soundtrack lacks bass definition and bass output. In their wisdom the engineers have excessively cranked up whatever bass the original had, making it sound wooly and boomy on the dts and dd tracks. The tuneful bass on new years day is lost, the best soundtrack being PCM. This review is based on expensive equipment. Otherwise the disk is good, good video and atmosphere at the concert.