John Darko from the hi-fi YouTube channel Darko Audio has reviewed the DALI CALLISTO 2 C system (including the BluOS module).
"One of the standout qualities of this DALI loudspeaker is its top end. We get a lot of ambient information - so recording space - it is delivered with a lot of delicacy and finesse."
"This is a big sounding speaker with an enormous sound stage. That and the very refined and smooth top end - are the two killer features of these speakers"