Hello all, Not sure if this is the correct place to post this - but I am desperately trying to eliminate some electrical buzz in my studio. I have a room in a basement of a building and from between 9am to 6pm I have a strong hum coming through my speakers - and all transformers in the studio have the same kind of buzz coming out of them. I have not been able to establish what is causing the buzz, and I have very little control of what else is going on in the building. To that end I have tried the following to eliminate the problem: 1) Unplugging everything and plugging them in one by one - nothing helped 2) Having all equipment tested for faults - no problems 3) I bought an Airlink balanced transformer 2000VA 230v to 230v CTE Three UK sockets (link here - Conditioning Balanced power supply: CBS2000: 2000VA 230v to 230v CTE Three UK sockets). Absolutely no change. 4) Given number 2 and the fact that 3 didn't work, I tried removing the earth from the power source (I know this is very dangerous, but I was desperate to see if this would help) - no change. Does anyone have any suggestions as what might be the problem, or indeed a suggested solution. Any help would be amazing, Thanks guys, Paul.