Replacing the ABUS products with new ABUS gear is an easy option to reuse the current wiring. Russound has anything you might need. Adding a Bluetooth receiver is an easy update as a source because it will automatically switch sources to the Bluetooth source whenever it is active.

If you add a Russound XSource to either the main hub or as a local source in any room, you can have streaming audio and app control. When connected to the main hub, the user will have to select the source manually using their ABUS keypad in their room, but if you connect one as a local source for a room, it can automatically become the active source just like the Bluetooth source.