VINTAGE SAE MARK 1 STEREO PREAMPLIFIER EQUALIZER. This one is tested and working. I will be well packaged and insured. High bidder will own cientific Audio Electronics, began in 1968 with a partnership agreement between Ted Winchester, Morris Kessler and Beth Winchester. With some creative graphics done on a Bishop PC Board they divised the S.A.E. logo and they were off and running. The company 1st brought to market the legendary S.A.E. Mark Two power amplifier that dispite its rather utilitarian appearance, won many fans including a certain Gordon Holt of Sterophile Magazine. In a sea of Marantz, Pioneer and Sansui, the Mark Two stood out. It didnt have the transistor sound commonly associated with these other brands. Its was different, special and otherworldly in a totally unique way.Fast forward to 1975 and the S.A.E. Mark One preamp. With its step attenuator, discreat capacitor array, separate 2 channel EQ settings, output gain selectors & input for (2) turntables, the Mark One became the preamp of choice for the well heeled 70s audiophile set.