Hello, I've been having issues with my airport express that I purchased off of craigslist's and before I surrender and consider that I might have been duped I was wondering if you guys can help me and see if there is something I can do to alleviate the issues I am having. My devices: Airport Express model A1084 (old version) Bose 3.2.1. Series III Two things: 1. The Volume playing out of the airport express is kinda low. I'll plug an ipod into it and comparably, when both played at max volume, the airport express will play at around 75% volume of the ipod. 2. There is a humming noise, which after going through trial and error can maybe say that there is an interference of where I decide to plug it in. I've been reading the forums for about 2 hours and using the search feature could not find anything about the volume issue. The volume is maxed out on both my system and itunes. I've considered getting a DAC since that helped other people out in other situations. Would a DAC help with my BOSE system? Would it remove the humming noise and increase the volume output? Thanks for helping me out.