Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Navigation sinks the ship!

I love the sounds, effects and amplifier envelopes offered by this device. And it didn't take me too long to start figuring how to go up and down the menu. But I noticed as soon as I stood up, I couldn't read the type in the columns. It was just too small to easily navigate. Plugged in, on stage this just wouldn't do. I'd vote for a major revision to the display. Make it HUGE!