The USBPhonoPlus v2 is a low-cost USB computer interface for transferring analog and digital audio source—especially from a turntable—to your computer. The USBPhonoPlus v2 adds more convenient pre or post monitor source selection and a variable headphone level control to the already successful low noise RIAA standard A/D interface package. The USBPhonoPlus v2 is fully compliant with the USB 1.1 specification and uses USB adaptive mode for playback and USB asynchronous mode for audio recording applications. Optical TOSLINK inputs and outputs as well as S/PDIF inputs allow it to act as a convenient digital audio to USB interface as well standard line level analog audio/USB conversion tool. Designed to work with the USB audio device drivers in PC Windows 98SE/ME/2000/XP, Mac OS9.1 or greater (with native USB support) or any OS-X based system, it requires no additional drivers. Housed in a robust black anodized-aluminum case, the USBPhonoPlus v2 audio interface can be powered by either an external power supply or directly from a PC based USB host port for added convenience. The USBPhonoPlus v2 now ships with a CD-ROM of the audio recording utility Audacity.