Used - Boulder 508 Phonostage. selling an excellent condition boulder 508 phono stage. Includes a pair of Boulder adapters incase you need RCA inputs. Gain: 44 dB (MM) and 70 dB (MC) at 1 kHz Input Impedance: 47k ohms (MM) and 100 ohms (MC) fixed loading Inputs/Outputs: 1 pair of balanced 3-pin XLR inputs and 1 pair of balanced XLR outputs Dimensions & Weight: 11.5 inches wide by 9.5 inches deep, weighing 11.5 lbs