Sony GT Series car stereo grows with feature-packed USB head unit. Via USB you can connect any music source to the Sony head unit for mobile music. Two models are available, the CDX-GT610U / CDX-GT616U and play MP3, WMA or AAC formats from any digital music source, CD or USB. With the new model Sony introduces a ultra-precise 24-bit D/A conversion and Xplod circuitry to ensure incredibly clean, dynamic reproduction of digital music. The Sony CDX-GT610U / CDX-GT616U will be available in January. GetUSB.info also reported on the Clarion DB568RUSB and JVC KD-G720 car stereo head units with USB connectivity.