I have a limited collection of 5-channel SACDs and an old OPPO player which has been repaired by OPPO. I have been to live performances of concerts where some of the orchestra, or one singer, is in the balcony above and behind the ground-level seats in the concert hall. SACD should duplicate this. It would add drama for Mater Gloroisa who sings of Faust's immortal part awakening in Paradise in the Mahler 8th.