I have been using a KP 500sn for the last 5-6 years with no problem being heard by the band or audience. We are a fairly loud 6 piece and go with stage volume at most gigs, singer blows harp and provides a decent PA, no subs. He will mix in the sax, guitar, 3 vocal mics, and drums at a modest level for a little bump up. Sometimes I'll jump on there too, but usually not as it's crowded in my opinion. I use either my SK-1 or Mojo -61 into a Ventilator 2 and I am very happy with the levels, size of amp, and ease of moving it around. I did buy an amp stand that I use on occasion if I want to project a bit above the din sometimes, but it's another thing to drag along and really not necessary. I found a nice level of eq settings and run the channel and master volume pots at 3:00 position; about 75%. Have never had to bury the expression pedal or go louder than that. No one player in the band is a volume problem; we're on the same page playing at a healthy level. Hope that helps. Joe.