Can anyone help ? I have a Tyros and seem to be having trouble with the vocalist on board. No matter what i do i get distortion even when the vocal harmony is not triggered. I have also tried another keyboard amp, but with the same results. I have tried different settings including Micheal's for the PSR 2000, and still no luck. The volume is not set too high ( for the vocalist ) and the trim button in the rear of the keyboard is just half way. No red light flickering while singing. I did not have this problem with my 2000, although i know that the vocal kit that Yamaha uses is not the greatest, it should be working better than this. I had some dancers tell me that they could not understand me when talking or singing. Anyone have any idea what's going on. It's not feedback since i have tried every different placement of the amp that is possible. Even had it placed 20 ft. away from me while performing. Thanks in advance, Bob Lee ( Also tried three different mic's )