A good FM tuner with a good antenna can sound every bit as good as a digital source. How close are you to the broadcast towers? Are there stations you like nearby that broadcast with a good signal? What are your options for antenna placement (a good roof mounted antenna is optimal)?
As far as how it will sound, yes, it can sound different. That depends a lot on the tuner you choose.
Here are some places to get more info about tuners and reception - fmtunerinfo and fmfool
As far as how it will sound, yes, it can sound different. That depends a lot on the tuner you choose.
Here are some places to get more info about tuners and reception - fmtunerinfo and fmfool