Alright here is my setup. 2 - Tech 1210 MK5's 1 - Pioneer DJM-600 2 - Shure White labels 2 - Rokit 5 Powered Monitors 1 - sony receiver 2 - 15" cabinet speakers The problem Im having is the Monitors have a horrible buzzing sound coming from them. I have the master out into the sony receiver. - No noise I have the powered monitors into the booth monitor - horrible buzzing I tried taking the monitors and plugging them into the master out.. - sounds clear - no noise Tried plugging the Sony receiver into the booth monitor out. - no noise My equipment is plugged into a power strip that is in a grounded outlet and my tables are grounded to the mixer. Any suggestions on getting rid of the horrible buzzing coming from the booth monitors.. It seems like a problem with just the booth monitor out and powered monitors.. Someone else had the problem right here but it was never resolved..