yea, i've seen some not-great rap shows (back in the day) just cuz the sound was bad. i saw Tribe Called Quest and De La Soul in my university ballroom. but as much as love them, the show "sucked" cuz the sound quality was terrible. same for WuTang opening for Rage Against the Machine. sounded like mush.
that said, I've seen KRS-ONE and Talib Kweli in a club and it was fvckin incredible!
not too worried about this tour, because with The Roots as "musical directors" and being a real live backing band... i know it will be high quality.