The XD-91 has been purposely designed as a V-Lok to V-Lok slot in radio mic holder for Boxx TVs Atom transmitter. The holder has been specially machined to allow access to the various ports of the Atom transmitter and also features soft inserts when the user slots in the transmitter. Finally the XD-91 features a wired Hirose connector which allows the Atom to be powered whilst in the holder.