I Own a nobels Ms-8 (always used for switch on/off custom Pedal), recently I bought a new mesa mark IV head, and I'd like to control it via midi, many people says that the best solution is the cfx4, but it can't control the class A/Simul Class function and the reverb...so I was wondering: Can I use the heand in the external footswitch mode and connect 7 (one to the reverb) relay of the MS-8 to the the external jack without damage the amp? I know that this is safe and tested for the quad preamp...but waht about the mark IV? please HELP!