As the volunteer archivist for my local folk group (buffalo friends of folk) I was asked to look into power conditioners, as they've been experience noise during the sound reinforcement. They currently use a mackie 404m powered mixer that drives 2 bose speakers, and 1 bose monitor. I'm not too familiar with them, but I know furman as a brand makes power conditioners. While browsing their website, I came across the PL-8 Series II, which looks like it might fit the bill, as it's not too expensive, and seems to help filter out possible noise sources related to AC. Does anyone have any feed back as to what else I should look at, or recommendations on a different power conditioner. Also, are there any boards I should look. Thanks in advance!