Regarding comparisons of vintage vs. recent equipment, a seemingly obvious point but one which often seems to not be taken into account in discussions of this subject is that comparisons should be based on similar present day prices. For example AustinStereo pointed out above that a restored SX-1050 is worth around $1000. So a fair comparison between that component and modern ones should be to a modern component (or a combination of components) providing preamp, power amp, and tuner functionality, with comparable maximum power capability, for a total of around $1000.
Regarding some of the other points that have been made, it is certainly true that "distortion wars" occurred during the 1970s, in which feedback was applied in a heavy-handed manner to produce the lowest possible Total Harmonic Distortion numbers. With the consequent adverse effects on Transient Intermodulation Distortion and increased emphasis of distortion components that are the most objectionable not yet being generally recognized. In fact as far as I am aware even today TIM is not normally measured or specified, and does not even have a standardized basis for measurement. That despite the fact that in the 1970s Dr. Matti Otala famously authored several papers on the subject, this being one example:
https://pdfs.semanticscholar.org/b3c0/a892a982ebde91f83f228905dac30186f827.pdf
My own preference among vintage components is for well restored tube equipment from the 1950s and 1960s, a lot of which can provide very good sonics and great value relative to present day price points. But I know that there are many happy users of solid state products of the "distortion wars" era, and that’s fine too.
Regards,
-- Al
Regarding some of the other points that have been made, it is certainly true that "distortion wars" occurred during the 1970s, in which feedback was applied in a heavy-handed manner to produce the lowest possible Total Harmonic Distortion numbers. With the consequent adverse effects on Transient Intermodulation Distortion and increased emphasis of distortion components that are the most objectionable not yet being generally recognized. In fact as far as I am aware even today TIM is not normally measured or specified, and does not even have a standardized basis for measurement. That despite the fact that in the 1970s Dr. Matti Otala famously authored several papers on the subject, this being one example:
https://pdfs.semanticscholar.org/b3c0/a892a982ebde91f83f228905dac30186f827.pdf
My own preference among vintage components is for well restored tube equipment from the 1950s and 1960s, a lot of which can provide very good sonics and great value relative to present day price points. But I know that there are many happy users of solid state products of the "distortion wars" era, and that’s fine too.
Regards,
-- Al