[spillmss]

I'm quite pleased with the stock speakers that came with the BMW 5 series. I have noticed a significant drop in sound quality when I stream for my phone. I was thinking about upgrading the speakers but I noticed when I play a cd, the sound is MUCH better. Any ideas on how to remedy this? Do I need an amplifier? I've changed the settings on my phone to only play back at the highest rate but that hasn't made much of a difference. Anyone else have this problem with streaming music?