The new ULXD4D dual channel digital receiver and ULXD4Q quad channel digital receiver pack two or four channels of wireless into one rack space, with individual gain controls, LED meters, and XLR outputs for each channel. Like the single-channel, half-rack ULXD4 digital receiver, the new dual and quad receivers feature fully digital audio processing and RF transmission as well as AES 256-bit encryption.

"ULX-D has already set a new bar for audio quality, spectral efficiency, and features with its intelligent rechargeable batteries and AES256 encryption," said Erik Vaveris, Category Director for Wireless products at Shure. "The addition of full-rack dual and space-saving quad-channel receivers provides customers with professional form factors and an amazing list of new features and enhancements."

The dual and quad receivers add two new features that make using a large number of systems not only possible, but simple. Selecting High Density mode allows up to 47 ULX-D systems to operate with a working range up to 30 meters in just 6 MHz of clear spectrum (equal to one U.S. television channel). High Density mode optimizes the system by running transmitters at low power and reduced modulation bandwidth, enabling ULX-D systems to be tuned to frequencies that are much closer together with no reduction in sound quality. With High Density mode off, up to 17 ULX-D systems can operate in 6 MHz with full operating range.

"High Density mode provides a unique option for getting an unprecedented number of microphones on the air," added Vaveris. "As spectrum challenges continue to increase, High Density mode is a key tool for systems integrators who need to maximize the amount of microphones that can reliably operate in less spectrum."

The ULXD4D and ULXD4Q receivers are also equipped with integrated Dante digital audio networking, which enables multiple channels of audio to be distributed to a variety of devices over a single Ethernet cable, including Yamaha's new CL Series consoles. Dante networking provides reliable, low latency audio transport, and can coexist safely on the same network as IT and control data. Shure has executed a licensing agreement with Sydney, Australia-based Audinate for the Dante digital audio networking technology.