Parasound Zphono MM/MC Phono Preamplifier with USB Dual transformers and analog power supplies - AC polarity switch to help eliminate hum RIAA defeat switch allows for post recording digital RIAA equalization - Settings for MM-47 k, MC-47 k or MC-100  cartridges 2 additional inputs for recording line level audio (Tape, Tuner, Sat Radio, etc.) - Headphone output for monitoring recording