When I was in a 'Folk'trio we were responsible for our own gear as in Microphone , stand , leads etc , and I had a decent P A . The mob I gig with now is a sort of Conglomerate with the line up dependant on what is required and who is available . We all have Microphone , stand , leads etc and again sometimes its my P A , sometimes one of the others . I have a sixteen channel mixer so if I am there its usually my Amp etc . Usually whoever brings the Amp gets a bit over the top financially .