DreamVision Yunzi BEST Passive 3D Upgrade Kit The BEST Passive 3D kit is available to upgrade your Yunzi 1, 2 or 3 Active 3D Projector to a Passive projector. Recommended Retail Price – AUD$POA.00. E. & O. E. DreamVision Yunzi BEST Passive 3D Upgrade Kit fitted to projector