What is "ttusb"

The Numark TTUSB is a belt-driven turntable with a USB audio interface. This allows the user to transfer music from a record onto a computer, from which it can then be burnt onto an audio CD. Introduced on December 2005, the TTUSB was the first turntable of its kind to have been released to the consumer market. A near-identical model called the iTTUSB was also manufactured under the Ion Audio brand name.