Don`t remember the Sony ~ 50watt per ch. receiver model I bought cheap with one channel blown up in 1975, but after I repaired it, and used it for 3 yrs, until I went to separates, and then gave it to my parents, w a cheap turntable & my Rectilinear speakers, to upgrade them from their 1962 Magnavox console, and my younger sister cranked the crap out of it .
It was still functioning properly, when in the early 2000`s, I again upgraded my parents, to a remote control capable brand new RS receiver, with RS Minimus 7 walnut speakers, and a RS sub.
And then, I then gave the Sony receiver to my long time friend, who didn`t have a stereo.
And other than replacing the shorted bridge rectifier in 2010, probably because his old house didn`t have grounded outlets, so surge/spike protection would not be effective, thus he had none.
Anyway, he used that receiver, until his death around 3 yrs ago, his foolish older brother probably either sold it for peanuts(like he did with most of the estate), or kept it, I didn`t ask him.