Let us mute / un-mute Channels by clicking (and hold) on the Mute / solo button and then drag up / down to change the state of multiple Channels.
Whether it mutes / or un-mutes would depend on what state you set the Channel you began with.
So if you mute a Channel and drag up / down you'll also mute every Channel you come across on the vertical axis.
And if you un-mute a Channel and drag up / down you'll also un-mute every Channel you come across on the vertical axis.
Instead of selecting a bunch of Channels with the selector and then go to the Channel rack menu to 'Mute selected' or 'Unmute selected'.
Oh, btw. the Channel rack menu lacks of 'Unmute All' and 'Unlock All'!
Feature Request: Mute / un-mute Channels with Click-drag
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