ok hit a cord , let it ring and switch presets. hear that tiny drop out? it does that with the footswitch too. i play in a band where i run sound from stage and i turn my solos up by switching to a preset with more gain and volume but how can i do that if it dropps out noticibly for an instant. if you use the same amp in the presets 1jcm, 2jcm more gain and volume,  3jcm  you can switch with no drop out but if you change amps 1jcm, 2 silver jubile, 3 jvm it drops out.  big glitch marshall. i might expect something like this from behringer but not you . shame shame shame