I use Razer wireless earbuds with both my Mac computers and my iPhone, but recently, on my 2020 MBP with macOS Catalina 10.15.7 they just stopped outputting any sound and I can't, for some reason, use master volume slider in midi at all.
I have tried to un- and re-pair the buds but to no avail. I tried other headphones and speakers, and those all worked. More mysteriously, the earbuds work on all of my other devices. I've also tried tampering with the format of the sound – I changed it to 1 channel (16-bit), and the Razer buds worked, but the sound was awful, like from a tin can.
Any theories as to why all of a sudden they appear as muted while using 2-channel format, and how to change that back?
Best Answer
I think it's always been that way, but I have no idea why.
If an output has a joint channel, like the older single speaker "built-in output" then it has a single master fader & the two separate channels are disabled.
If it has distinct channels, then the channels are active & the Master is disabled.