Its an Alpine CDA-9811, the problem is for the past two months, I would lose sound on both cd and radio and then get static like sound ( like the kind when the cable goes out on the tv). All the connections are good, so could it be a problem with the speakers( kenwood execlsions), or is the hu done. Do all the CDA units use the same harness? And is the CDA-9853 compatable with the KCE-422i Ipod adapter? Finally, is there much differance between the 9853,9856, and the 9857?