The TR1616 is 16-in/16-out digital I/O modular building block box that allows the customer to create a digital snake or network to the size they need without confusing addressing or programming required. Just plug-and-play. You can add additional TR1616s up to 256 channels at 48kHz (128 channels at 96kHz). This means you are no longer buying and replacing old systems, lugging heavy and expensive copper, or tracking down hard to find network issues. This unit, along with the PMC16 personal monitor control, brings networked audio to a whole new level for the first-time and can grow with your needs.