Hi, I have two old MB cars, an 81 and an 82, both are all original. One has an original digital becker headunit, the other an analog one. Both will have ipon aux inputs in them in the near future (one already does). Not sure if it works on RF or somehow isolates the radio and inputs directly into the amplifier, similar to how the cassette tape functionality in the units works. Anyway, I will NOT replace these head units with new-tech. Period. Here is an example of just how ugly-gawdy an aftermarket headunit can look in an older euro car - yuck! So Im stuck in the pickle of being "stuck" with the output of a refurbished 30yo head unit. So how do I upgrade my sound system? Just send that to an amp to better speakers? Add some kind of intermediate box that "cleans" the signal? I will say that I am happy with the sound in these two cars as is, with paper speakers and old silver plated spade connectors. Im concerned more with sound quality than SPL, and while I want to hear good, clean mid-range musical bass, I dont care to have every bass drum beat punching me in the back. I dont play loud, there is a good amount of road noise compared to a modern car, etc. I amplified the front 5 1/4 component speakers in my BMW, and with a good amp setup, I see the benefits of moving to a bit newer speaker setup. There are some issues with that system that I think can be overcome by doing it complete and right (e.g. the rear speakers are not amplified, and I think that in some situations things get a bit boomy, yet not clear). I dont mind spending money, though one of the two cars is more a garage queen than a driver, so while I want to play radio/music when cruising, I dont want to spend a ton. If I spent $500/car, I think that would be on the high end and my wife wouldnt like it... Can anyone help me to get off on the right foot so that when I go talk to the local stereo guy, I have some semblance of knowing what I am talking about? Thanks!