I used to sit in front of the amp then dial in what sounded good from that distance. But these days, I like to stand about 7-10ft. away from the amp, and then dial in my tones based on the audiences perspective. Is this a bad idea? A lot of the clubs/bars that I play at don't mic us, so I just opt to open the amp up . Those are the times that I see this being useful, especially since the amp sounds completely different at that distance (more highs/mids come through, need to compensate for the bass loss/shrill highs). But I could see this being somewhat problematic when the club does mic us.