I have had both early Marantz and ones later after Sony bought them. The Sony ones are IMO only about equal to 80% of the quality of the earlier ones. The pre (about) 1977 Marantz receivers are made and assembled to a really high standard. I still have both a 2250 and a 2265B (which I am listening to at the moment). Neither has needed any service since new and both work perfectly. I suspect the consequence of the quality involved was the price. It made them non-competitive. A much later one (I forget what model now) is long gone.
Good Listening, Bruce
DIY Custom Direct Drive,Jelco,AT33PTG/II,Hana EL
Empire 598,Origin Live,DynaVector Karat 23RS-MR,Grado Woodie
Sota,Jelco, Benz MC Gold
Transcriptor Saturn,Vestigial Arm,ADC XLM