I tried the pedal directly on PA, in return of my amp and with headphones.
At the time I use it for rehearsal in return of my amp, combined with NS Boss. Used in this way is a little bit noisy. In fact is designed to be used directly in PA and no NS needed. Soundwise, is KILLER!!! Can be tweeked very easy from clasic rock sounds to metal.
I like both channels, with their features.
I fully recommend you to try.
I made the right choice when I decided to buy.
Is what you need for a good sound. I managed to fit in the mix, easily.
Pros: perfect choice if you want fast setup for concerts, if need a lightweight rig without compromising the sound, back up for your gear, to practice late night with headphones,
"Cons": I wish to had a chorus inside :)