Suddenly the audio cuts out, but the continuous piece to play

suddenly the audio cuts out, but the continuous piece to play…do you have a idea about this problem?
i used : a macbook -air , + teac UD 503 DAC!

Hello @Christophe_BRETON, apologize for troubles and for late response.
Can you please describe the issue and your setup using this FAQ topic as a guide? This will expedite the troubleshooting process.

Thank you.