Digital audio signal converter may transfer the digital musical of CD, MD, MP3, mobile phone and so on to the sound equipment in vehicles. So you can enjoy hi-fi digital musical by tape player in vehicles. It also suits for the mobile telephone of amps, GSM, dcs, CDMA and TDMA, etc all telecom systems. You can use the telephone without manual operated by the tape player in the vehicle.digital audio signal converter need not change any line, structure in vehicles and need not add the additional power, suitable for various vehicle tape player digital audio signal converter may use once you insert it. You only put the digital audio signal converter into the tape player equipment like inserting a tape, and the other end of it connects with the digital musical player equipment and mobile phone now you can listen the great digital audio signals by vehicle tape player equipment.