I pointed this issue out last year to A&H and was told about the issue – the response was ‘we do not advise’ hot plugging etc..
Ok, so I pointed out when shutting down the desk, there was the same pop over the main P.A. and mons. – I don’t have this issue with iLive for example. As always, muting the outputs, surely no sound – pops, bumps etc, should not be apparent. It is obvious there is voltage present even if a mute is activated and with the phantom debate.
I was told there was a fix, however the desk warranty had expired and it would be a cost implication to myself..
…so there is a fix they’ve admitted to that does solve the issue – however not with any firmware release.