I play an open mic night on Wednesdays where the host is a good friend of mine. I asked ahead, if it would be OK if I brought my S1 out and set it up independent of his PA so I could try it in a live setting. He said no problem. This is a small bar/restaurant that has a good crowd this week.
I set the S1 on a small speaker stand off to the right of the tiny stage, hooked up my SM58 and put it on a mic stand behind the performance area. Also attached a 1/4 inch cable for my guitar. I had freshly charged the battery so that I could run on battery.
The host played a couple of songs through his standard 15 inch speakers then through the S1. He stopped and said over the PA "man, all that sound is coming from that tiny box". I didn't get a picture of the setup but the S1 looked pitifully tiny next to those 15 inch powered speakers on stands.
I played my set through the S1. People couldn't believe that I was only playing through the S1. They thought it was just another speaker off the "big PA".
IMO, the S1 really shines in these type venues. The sound was clear and crisp. It cut through the crowd noise, no prob.
A couple of observations.
With the unit sitting off to my far right, making adjustments mid set was almost impossible without someone helping you I haven't tried the appc. Can you adjust treble, bass or reverb for channel 1 and 2 from it?
I'd like to see a master volume control. Once you get balanced, it's a pain to rebalance both channels if your volume needs to change.
It would be nice to have, at least, a total ststem mute button. Again, you either have to turn each channel down or turn the unit off.
Does the app address any of these issues? I'll give it a look later today.