I did a lot of testing/research on the mute system a while back and wrote up this little piece, which to the best of my knowledge is accurate:   X/M32 Mute System settings (setup/mixer page) Hard Mute: If the Hard Mute box is checked: If you mute an input ch with the hard mute box having been checked, that ch can only be unmuted by the same ch mute button. Also if you mute an input ch and that ch is also part of a mute group, unmuting by the mute group button it belongs to WILL NOT override the actual ch mute itself. The muted input ch remains muted everywhere it's used, mixer wide.   If the hard mute box is unchecked: If you mute an input ch, and that ch is also part of a mute group, you can then mute and unmute that ch with the mute group button even if you muted the actual ch itself as a separate process, an individually muted input ch will follow the mute group mute/unmute action.   DCA Mute: If the DCA mute box is checked: It mutes every ch that's part of the DCA group-both at the input ch and at the bus, it's kind of the 'hard mute' of dca world. All ch's that are part of that DCA will be muted everywhere mixer wide if the DCA mute button is engaged.   With the DCA mute box is unchecked: If an input ch belongs to a DCA group, and the DCA is muted, only the sends to mains are muted NOT the bus sends. This is the setting to use to allow monitors to remain active while FOH ch's remain muted. It's kind of the 'soft mute' of DCA world.   +M mute Input/LC, Pre EQ, Post EQ and Pre Fader tap points have a +M option as a possible selection. All 4 of these tap points happen prior to the normal Mute position in the signal flow. Mute normally falls just before the fader, right after insert. By adding the +M to all the above tap points, it allows the mute to be included at that tap, the EFFECT of it is putting the ch mute to just prior the specified area. The +M ch is muted from that point forward. Not using +M defaults to the normal mute ch action which is post insert/pre fader. You could think of the +M option as a variable mute switch on an invisible slider. Default mute position is post insert/prefader. When you select 'pre fader +M' the invisible 'slider' moves to the left slightly to post compression/pre fader. Post eq +M, slightly more left to just after eq. Pre eq+M, more left again to just before the eq. Lastly it moves to the the most far left spot possible, just prior to the low cut filter. Read more

Hi Majorr, there are several possibilities, best to upload your scene. The basics to do so:   https://behringerwiki.musictribe.com/index.php?title=Uploading_files_to_the_forum   It may be easier these days by copying your scene to your computer and using the Browse button below. The last section in the wiki there refers to the old forum method. Read more

@DaveMorrison    Yes I forgot that 10 year warranty!  Pretty special and maybe makes it all worth it. @farshad7 Yes I do own one X32 Core amongst other mixers. However if the Core is competing money wise with the M32C, I'll be letting mine go soon! Read more