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Forte audio model 50 dac

I acquired a Forte Audio Model 50 DAC as part of a Adcom 555 II purchase. Until recently I didn't believe you could own too much audio equipment but I'm rethinking all that. So I'm trying to sort things and information would be a tremendous help. I'm doing a lot of internet searching and can't find much. I believe it was a Nelson Pass design and regarded as a quality component in it's day but not much else. Does anyone have anything or suggestions where to continue my search?