Beautiful response & sorry for taking so long to get back. I heard MBL's at the CAF back in 2016. Pierre Spey of Mapleshade Audio was showing them. Can't confirm the model of MBL & they were paired with other speakers. Do remember the MBL's being driven by tube amps & the realism was definitely there for 3D imaging & proper timbre, which blew me away. Unfortunately, that venue was at the Silver Spring Hilton & the vendors didn't have the best rooms to show in (size & people roaming) plus most rooms were hot & this room was one of the most unbearable. But the MBL's shined & left a permanent impact on me as no other speaker (None out of many shows) has ever done. I was a musician many years back & felt as if I was in a studio, being in the presence of MBL's.
