Giving you the ability to simultaneously receive audio from 2 compatible UWP-D series transmitters as well as a third wired microphone, the URX-P03D from Sony is a portable digital audio receiver that offers wide frequency coverage with up to 72 MHz bandwidth across a broad range of channels. Its integrated 3-channel mixer allows you to control your levels as well as assign outputs freely. The URX-P03D receiver can be mounted directly (without cables) onto many Sony cameras that have an MI (Multi-Interface) Shoe by using the optional SMAD-P3D two-channel shoe adapter. It can be used with any size camcorder or DSLR camera, when paired with a transmitter and microphone (sold separately), to capture audio for ENG (Electronic News Gathering), EFP (Electronic Field Production), and other sound applications for video."