​​​Original old stereo vintage ad for JERROLD CORPORATION.  Main office and factory was located in Philadelphia, PA. Harman-Kardon SR900 Stratophonic receiver, all transistor, a totally new sound.  In full-power frequency response, FM sensitivity, freedom from distortion and sheer listening pleasure, it is unsurpassed.  Not a single vacuum tube is used. This unique one-page 1964 high fidelity stereo equipment component trade magazine advertisement would display beautifully matted and framed.  It would make a nice accompaniment to your vintage stereo.