I have a pair of these mics, and have gotten some pretty good results. They are tiny as hell, too, if you are trying to be inconspicuous. Either run through an ST-9100 into a stock PMD620 or through a battery box (SP-SPSB-9) into a OCM PMD620...Nothing quite as loud as what you are talking about, but let me know if you want to hear some samples, and I can send you some songs. I think I have about a half dozen shows with each configuration...