Tested Both left and right channels function, did not hear any distortion Only the aux section and has been test The subsonic and tone control does not function properly Cosmetically left side has a nick, some wear and tear such as lite marks and scuffs, scratches no heavy scratches Please check all pictures provided Will be packaged in a double wall box and styrofoam all around Sold for repair or parts

Rare vintage RGR Robert Grodinsky Research Model 4 stereo preamplifier with phono. 2 phono inputs with variable capacitive loading, tone controls, tape dubbing, AC outlets etc very full function. Used working condition some scuffs from component stacking and along top edge of faceplate- normal wear and tear for a component of this vintage. These were quite high end units sold through Lyric HiFi and other select boutique HiFi dealers. Sold as-is only within continental US, no military APO addresses. Buyer pays flat rat $40 shipping.