The signal for the TechniSat DigitRadio 11 IR comes via various means:

- DAB+ and FM: The device is equipped with a DAB/ FM throw antenna, which ensures reception of DAB+ and FM stations.
- Internet radio: The connection to the Internet radio is made via WLAN. The device supports both 2.4 GHz and 5 GHz Wi-Fi networks and you can connect it to your Wi-Fi network either manually or via WPS (Wi-Fi Protected Setup).
- Bluetooth: The DigitRadio 11 IR uses Bluetooth audio streaming to connect to your smartphone or other Bluetooth-enabled devices.

You must therefore connect the device to the stereo system, which is typically done via an RCA audio cable or an optical connection (S/PDIF).