Harpman, I replaced my becker with a Sony 7900 am/fm/minidisc and added a Sony 10 disc cd changer in the trunk. On my wife's 89 300se, we added a Nakamichi am/fm/cassette and added a Sony xm satelite. In order to get the sound you want from the new stuff, you need to rewire the speakers and cut loose from the factory wiring and amps. The new deck you add will in most cases have more power than the old Becker with the amps, so naturally you will not need the amps. The amps seem to cause a noise in the system that you cannot get rid of until you cut loose from them. I ended up having a dead speaker in the rear deck and did not notice it until I replace the becker deck and got rid of the amps. When you get ready to change out the deck, email me at scottfish@peoplepc.com and I will give you details of what to look for and how to do it as far as what colored wires go to what. If you have never done this before(like I was) it may take you between 3.5 and 5 hours to do the job, but when you are done, you will be amazed. I will tell you that if you are going to do the job, you will need to get a spool of 50 feet of 14 or 16 gauge speaker wire that you can pick up at your local Walmart for around $8. Email me when you are ready and I will walk you through it step by step or you can call me with any questions at 423-817-0952. Good luck! Don't be fooled by the time it may take you to do the job because it is really a very easy job and you want to take your time so that you don't have to go back later and correct something. Scott