Our flagship model combines exceptional phono preamp performance with three additional aux level audio inputs, then adds an variable output level control. Soft-touch switches control power on/off and source selection. While off, the TC-754 even remembers what source was last selected and reselects it when powered back up. The output level control allows connection to a power amp either directly or through an equalizer; or it can simply be used to fine tune the audio level sent to your computer sound card or receiver. Spectacular RIAA equalization accuracy and a S/N ratio of 85dB make the TC-754 our best performing phono preamp; its additional features are extra icing on the cake! Again, you are purchasing the BLACK VERSION. To find the silver version, enter B004RYGOV4 in the Amazon search bar. Now includes our improved REGULATED AC power supply usable worldwide!