New to the Dead in spring 1993 are their in-ear audio monitors, whose benefits allow the vocalists to conquer venues such as the boxy concrete Capital Centre yet still sing extra quietly, especially useful for the batch of new songs debuted at the beginning of the year. Perhaps the heaviest and most haunting is Garcia and Hunter’s “Days Between,” Hunter’s brilliant and universal evocation of their unforgotten teenage dreams. Tonight it stands on its own, getting a place of honor (and tender reading) after this evening’s most psychedelic of jam suites, a sequence that included “Playing In The Band,” “Dark Star,” and “The Other One.”