OK, I finally traded my Yukon Denali for a Saab 9-5. Quite a difference. I want to keep the stock stereo for now but want to install my empeg. One possibility is a remote install but at present there is no auxillary input adapter sold. I can replace the headunit using a kit sold in the UK but there is one problem (possible problem). I understand that the headunit in the Saab links to the amplifier using "balanced professional audio signal" as opposed to "single ended consumer audio signal" which I assume would include the empeg. Could someone explain the difference and even better suggest a solution (short of changing the rest of the system)...?