Monitor cab off has never meant mute? It has always meant that the Cab section is bypassed for the monitor output, while it is still in the chain in all the other outputs.
yeah sorry, my bad, I guess I've always just changed the monitor output to off when not in use. That said, I do wish there was a mute switch for the monitor out for using as I stated and for unplugging and plugging in instruments. I've always kept my tuner in non mute mode so that I can hear it when tuning in the studio. Unless I'm missing something, is there an easy way to mute the monitor output without switching from browser to tuning mode and then using that mute? Live, I'll just set the tuner to mute.