Did the venues have WiFi? Did you change channels at the venue?I have the G90 but I never use it, because it had the strangest habit of working fine for practice & rehearsal & jamming, but as soon as I used it at a gig it would fail. This happened about 5 times. It's currently the worlds most expensive rack-space filler.
Every, every fucking time- fine at home, fails at a gig, & I never did figure out how or why. I've since gone back to a 40 foot cable, mainly for dialing in my bass tone out in front during soundcheck w/the 3-band eq on my bass.
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