I was playing with our group at two of our members' church for their anniversary. We were the last group to show up, which for us is RARE. But anyway, there's a few bass players in the house already all of which I'm sure have been playing longer than I. But one guy had his rig already setup so the all the bass players could just use his gear since he had prime placement of his gear and there was NO other room for the musicians to set up any more eqiupment that size. So, I guess he catches wind that I'm playing bass for our gospel group of which two of our members went to his same church, so he asks me how long I've been playing and we go through all of the usual formalities when meeting other players. So I plugged in and did a sound test, all was working fine, so I thought. While I was getting a feel for his amp and the sound it produced I played some group material which was only in broken riffs, nothing fancy, I even tossed in some of Uriah's video 10 for good measure. So then it's my turn to play and the amp has NO power at all!! I mean I could barely hear myself play, so I looked back at him and told him to turn it UP. The amp is on 8, and the gain is on at least 5-6, and this is an SWR 750 mind you. So I tried to tweak the knobs while half way playing at the same time, and NOONE in the audience could hear me I'm sure of it, cause I could barely hear myself and I'm 3-4 ft away and both my pickups are wide open so I know it's not my bass. So when I was done, one of the other bassists said he saw him messing with knobs before I plugged in to play. And I watched him plug back in to play more songs and his bass was loud and full of volume. I don't know why he would do that I guess he just has that type of personality, where he didn't want to see someone else play nice stuff on his rig or was jeaolous I was playing with a really good gospel group that is leaps and bounds beyond my skill level.