The document describes TOA's NX-100 Network Audio Adapter, which can transmit high-quality audio and control signals over IP networks like LAN or the internet with minimal delay. It allows for two-way audio transmission using a single unit. The NX-100 can be powered by AC or battery and its applications include broadcasting audio from one location to multiple remote locations over an existing network infrastructure. Example configurations and applications described include broadcasting from a company headquarters to different sales offices, monitoring sounds from remote locations, and emergency broadcasting over freeway networks.