What I heard at THE show was probably this same setup as in the RMAF:
https://www.stereophile.com/content/vandersteen-k%C4%93nto-carbon-loudspeaker-and-m5-hpa-amplifiers-...
https://www.stereophile.com/content/vandersteen-k%C4%93nto-carbon-loudspeaker-and-m5-hpa-amplifiers-...