90 dB,

I generally agree with you except I think there's quite a bit of evidence that there is a type of audience that goes to hear a single solo performer, to hear them, not to dance along with them. The 'good time' to them is partially being wowed by technical prowess on a single instrument.

This may or may not be your or my particular cup of tea, but the audiences are there, as well as some pretty unique and musically talented skills needed to make it come off with panache. Tommy Emmanuel and Trace Bundy come to mind in acoustic guitar world.

With all of that said, the SR18 drum machine will do everything this thing does, can be footswitch activated, and provide tons more programmability as well as live performance options.