I have a problem with my headphones (Sony MDR 1000X) on my mac (macOS sierra 10.12.5). It can connect well, but the sound of it is intermittent.
After some searching, i found a solution by change the input device from my headphones to "Internal Microphone". It fixed the problem, but every time i connect my headphones to the mac, i need to change the setting once again.
The solution is change the setting:
System Preference - Sound - Input - Internal Microphone
Is there a way to disable headphone used as input device (or set "Internal Microphone" as default one even there is a new device connected)? Or any other way to fix the sound problem?