SAE MARK FOUR B AMPLIFIER WITH MARK ONE PREAMPLIFIER STEREO SYSTEM. USED. STANDARD SHIP/ ADULT SIGN. These units have been serviced/all inputs tested. This is a great SAE stereo system. These units have some cosmetic wear but overall present and perform well. The preamp is missing one knob, but at one point came from Audio Classics which is neat. This is a great sounding system. 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. S.A.E. MARK IVB STEREO POWER AMPLIFIER Manufactured between 1972-73 (msrp $350). This was part of the first line of S.A.E. components ever offered.60 watts per channel at 8 ohms with independent channel controls. Pro packaged, insured and includes tracking. No PO Boxes. No accessories. Thanks.