From the Company that invented the QBOX comes the QBOX AES, The ultimate multipurpose testing device for troubleshooting digital  AES-3, S/PDIF, and analog audio signals. The Whirlwind QBOX-AES comes loaded with field savvy features that allow you to monitor your AES stream in real time, check the sample rate of your AES stream, and convert your analog signal (MP3 player/Smartphone...) into an AES stream, and that’s just the beginning! With virtually all the features of our legendary QBOX built in, you’ll be ready for anything the audio gremlins throw at you.