The Shure ULXD4D-GV is a dual-channel networkable wireless receiver for use with ULX-D Digital Wireless Systems. Now featuring wide-tuning frequency bands offering an expanded range of up to 166 MHz( region dependent). With 24-bit / 48 kHz digital audio for pristine sound quality efficient RF transmission for maximum channel capacity in crowded spectrum and always-on AES-256 encryption to protect confidential content ULX-D delivers uncompromising wireless for the most demanding environments. Dual-channel digital wireless receiver for use in demanding corporate education government and performance environments. Features wide tuning frequency bands (up to 166 MHz region dependent) extensive antenna and spectrum options and always-on AES-256 encryption.