I see many people complain about the tuning signal . maybe it be the individual usage and different type of wall and area , but I put these through the real test . my finding be once I find the signal it lock in no matter if I go around my house or down the street . I get at least 100 foot outside my stereo and no drop of signal or loss of sound . I keep the charges\/antenna up on top of the cabinet and some fm channel may need tweek at certain point , but CD 's and digital music once lock in work great . the stereo seperation be fantastic \/ these phone be worth every penny pay for it .