OK , I ordered my second mixer from Thomann yesterday. It is primarily intended as backup, although I 've never really experienced any problems with the stability. I usually have an analog mixer in the car in case something should occur, but in a given situation it is of course much easier and faster to just move the settings to a new M20d and continue. Some gigs are quite critical, and I really don't need to get in a situation where I have to rig a totally different mixer and do the soundcheck all over again. My first mixer is an early version, hoping that some reported 'childhood diseases' are fixed after that. Having said that, I definitely also want to test some scenarios with two mixers in parallel.