Emotiva Audio SP-1 Input Selector & Phono Preamp Add three line level inputs and a precision phono preamp to your preamp, DAC, or pre/pro Upgrade your Emotiva Stealth DC-1 to a complete modular digital and analog preamp. Precision switching relays add virtually no noise or distortion when switching line-level inputs. High quality precision phono preamp supports both moving coil and moving magnet cartridges. Can be controlled by the Stealth DC-1 remote control or the included compact IR remote control.