The ART USB Phono Plus is a flexible phono (turntable) preamp with a USB interface and digital connections. The USB Phono Plus is an ideal solution for quality recordings while digitizing old vinyl collections, connecting a turntable to a line input, or as a simple audio interface for your Windows or Mac OS computer. There are optical digital inputs and outputs, S/PDIF input and analog preamp outputs. Also featured is a headphone output, gain control and monitor level adjustment controls. A line / phono input switch allows for line or turntable signals to pass, and a low-cut filter switch eliminates hum, rumble and other low frequency artifacts associated with vinyl recordings.