inputs.text: good not great - overall product good price signal fm receiver car works good lower frequency ranges not best higher ones like fm transmitters music play not loud could blutooth connection works pretty well not problehems main uses works great casesi find minor problehems though involve playing music headphone jack either phone gogroove seehems like unit not filter car noise power input playing music aux input car charging phone amplifies type car noise car stereo makes playing music aux jack pointless charging thought could possibly fix problehem connecting unit via bluetooth using output unit aux jack problehems problehems not affect consumers noted product not exactly claims flawlessly put kind power filter device prevent engine noises going analog signals device