Why can't I use my buds as 2-channel now, when I've always used them as 2-channel?
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 &quot;built-in output&quot; then it has a single master fader &amp; the two separate channels are disabled.

If it has distinct channels, then the channels are active &amp; the Master is disabled.