The KATHARINE performance uses silent disco headsets which are over ear  headphones (pictured here).  

As standard each tour carries two receivers which allow audience members to use their own headphones (headphone jack, not usb c)

We carry a number of inductive headphone loops which enable / enhance the experience for audience members with hearing aids.  These hearing loops do not work with cochlear implants, and if you have a pacemaker you are advised to check with your doctor or manufacturer of your medical implant before using this product