I have seen several cool devices which sense an incoming cell phone call and beep or vibrate or flash, and it occurred to me that someone could build an add on box to do the same for the Empeg.
It could sense an incoming call and PAUSE the Empeg. NOTE I said pause, because why would you want to mute the Empeg, unless you were listening to the radio (which if you have a MK II not too many people are doing)

I have no electronics skills so I thought I would post it as a free idea.

John