Rare 1975 JRC 2-Circuit Op-Amp 4558D, 3 pcs. Same Lot, Glossy Finish

A set of three glossy, highly rare JRC (New Japan Radio) 4558D dual low-noise operational amplifiers from the same lot, manufactured in 1975.
These are dual operational amplifiers, model 4558D, removed from a product by a leading audio manufacturer listed on the first section of the stock exchange, manufactured in 1975, and have been stored. These are believed to be among the earliest products.
Operation has been confirmed.

#Dual #DualOperationalAmplifier
#OperationalAmplifier #OpAmp
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#IC #OperationalAmplifier #Amplifier
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