I recall visiting the AR demonstration setup on the Mezzanine at Grand Central in 1968. They had an AR integrated amp, a pair of AR3a and an AR turntable with Shure V15 cartridge. (AR did not make cartridges. ) I bought Vilchur's Reproduction of Sound and Allison's High Fidelity Systems there. Next thing you know I was reading Stereo Review, High Fidelity and Audio magazines and shopping for my first serious audio system.