​​Original vintage ad for AUDIO DYNAMICS CORPORATION.  Main office was located on Picket District Road, New Milford, CT. ADC-3 compliance with the new stereo cartridge, obtains the highest performance possible from its associated equipment.  Lexicon for Listeners Number 1.  Specifications are given.  This unique old one page 1963 high fidelity component trade magazine advertisement would display beautifully matted and framed.  It would make a nice accompaniment to your vintage record player.