This is the aim Tube AS301 DTS. It is the world’s first USB Audio dongle supporting DTS Surround Sensation Technology. In these photos it looks quite big, it is actually a very small device. Notice that the two holes at the bottom are the normal headphone jacks found in any MP3 player and most smart phones these days and you get an idea of the scale.
The audio chip being used in the Audio Tube is the VIA Technologies Vinyl VT1610 Audio Codec. The VIA Vinyl VT1610 Audio Codec is a highly integrated chip for USB audio solutions.
It includes a USB 2.0 full speed interface, one stereo headphone output, and four microphone input channels (supporting analog or digital microphones). The VIA Vinyl VT1610 is supplied in an ultra thin package, allowing for very compact PCB design and you can see the designers of the Audio Tube utilized this small form factor. A powerful and cost-effective solution, the VIA Vinyl VT1610 is targeted at MIC Array, VoIP, Headphone, and USB Speaker applications.