The real potential of DAB+ lies in its digital audio data. Music is transmitted without loss of quality, digitally.
To fully benefit from this potential, the digital signal also has to be transmitted between the several components of an audio device until it reaches the human ear.
The Si468x chip that we use in our DABBoard has these features. And the Raspberry Pi as well. What is left to enjoy music in digital quality is to enable the I2S bus within the Raspberry Pi.
With the newest version of our DABBoard instructions we have added a manual about just that. Download the instructions to learn how to fully profit from the digital sound.