... of sound quality that occurs with existing cassette and FM transmitter solutions. Directly control from car stereo panel,user only need ... Building in Amplifier chips.Widely extends external audio sources,like PC,MD,PSD,GPS Navigation and Mobile Phone,Easy to ... install and use.Bluetooth function is available. Compatible with Compatible with OEM radio: Toyota,Honda, Volkswagen,Mazda,Hyundai,Audi , ...