Hi, I have managed to locate a lead which has allowed me to have 2 amp pre outs from my Symphony head unit. The lead can be seen at: http://www.caraudiodirect.co.uk/blaupunkt-preout-lead-p-79.html Having fitted it my amp works fine. However i am getting interference. When i rev the car, the rev noise comes through the speakers. Why could this be and how do i stop it? My stereo also said SAFE MODE at one stage. This would not allow me to do anything. I took the blaukpunkt adaptor out and plugged the original adaptor back in and it began to work fine. I have now put the blaupunkt adaptor back and SAFE MODE has not come up again. Is this something i should be worried about? Thanks.