A couple of years ago i was at an angels and airwaves show and one of the amps dave kennedy was using, had a LCD display. when he was playing a message scrolled across it in saying "why are you looking at me when you should be watching the show!' does anyone know anything about these? like what type of head allows you to do that or was it possible an RT or another rack mount? thanks!
It's just an LCD display with a microcontroller. Google that.
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