I have an old (probably '60s) hifi amp. It’s awesome. Replaced the selenium rectifier with silicon, replaced a few caps, and put fresh tubes in it.
It sounds…basically the same as modern solid state stuff to my untrained ear. It’s pretty cool that in a sense we “solved” the problem of amplification back then. Most of the speakers of the day were probably complete crap by today’s standards (unless you had something upscale like a pair of AR-3s), but a well designed amplifier from the era holds up well.
Kids these days can still enjoy the finer things in life.