I have been having issues on and off again when I use my Vocalist Live 4 connected to my electric guitar pedalboard with ten pedals.
Typically everything starts out fine but then about an hour into using my set up my signal starts cutting in and out intermittently. I narrowed the problem down to the output of the 1/4" connector going from VL4 to my pedalboard...it happens mostly when I play a tune with overdrive or distortion but not always.
It's not the unit though because I bought a second one after having used the first one for over 10 years but I have the same problem with the new one!!! AND when I use my acoustic guitar directly into the VL4...it works fine with no problems at all.
The problem only happens on my band gig when I connect the VL4 to my pedalboard