Advertisement Title: RTI AD-4x Professional Audio Distribution Device - New Advertisement Text: For sale: Professional audio distribution device from the international company RTI, model AD-4x. It is an integrated system for audio distribution in smart homes. Specifications and Condition: Condition: The device is brand new and comes with its original packaging. Manufacturing: The device is manufactured in Taiwan. Ports: It has multiple inputs and outputs for efficient audio distribution to different zones. Model: RTI AD-4x Audio Distribution System. Note: This device is part of a set of professional home automation equipment I have put up for sale. The device is ready to use and very suitable for smart audio projects.