An audio signal processing device (10) comprises an input (2) for receiving an input signal; an output (4) for transmitting an output signal; a switch module (60) adapted to electrically and/or electronically connect the input (2) to the output (4); wherein the switch module (60) is adapted to select one of a digital audio signal pathway (35) and an analogue audio signal pathway (55) for connecting the input (2) to the output (4) dependent on a type of the input signal. A system comprises an audio device electronically connectable with the audio signal processing device (10) as described above.