kl4evr

I know that this has been asked, but I haven't been able to find an answer through my searches. I have recently purchased a portable MD player...loving it! I only have a cd player in my car (Pioneer DEH-245) and want to set up my MD with it. Through searches, I understand that the only way I'll be able to do this is through an FM modulator or transmitter as my head unit only has RCA plugs for preamp out, and no aux input that I can see. I also have determined that the better option of those two is to get the "wired" modulator as opposed to the wireless version. My question (finally) is: Is the sound quality really THAT terrible, or is it tolerable? Thanks for your help. Kevin