I know Phil Ward who reviewed the Kii's and Manger C-1's for SOS was really keen to have a pair, he actually uses the passive LS50's .
I will email him, I will also measure both the passive and actives and post the plots, subjectively the actives appear to me to extend deeper and are able to have more aplomb when the bass extends further than they can manage.
I would recommend them to anyone and you know of course how convenient they are to use, my wife uses Bluetooth for podcasts and radio, I use the USB for Tidal/ROON, and the wifi to connect to the NAS, so simple ,an elegant.
Keith