I was given a McIntosh MC2250, it was many years old, I used it trouble free for many more years, until I went back to efficient horn speakers and tube preamp/amp.
https://www.mcintoshlabs.com/legacy-products/amplifiers/MC2250
Had it checked by McIntosh at a lab day at Harvey’s NYC when I got it, checked perfect, beyond spec, needed one LED replaced; and had it checked/certified by McIntosh factory in Binghamton, NY prior to selling it, needed nothing.