Normally with cab simulation on both outputs and with my passive Yamaha wedge as my monitor on output 2. In the rehearsal room or at gigs when I have the wedge with me I simply use the cab simulation on both outputs and out 1 goes FOH. If there's no space for my wedge, I simply use one of the 4x12s they usually have at the venue as my monitor and only activate the cab sim for output 1 (FOH). Sounds a bit different through the cab but with the bass/mid/treble knobs on the SD 170 it takes just seconds to make it sound great. And yes, it's definitely loud enough with 170 W. The Powerstage is simply awesome.