I don't own an Accuphase and never have however the E-202 integrated was a bit of a groundbreaking piece in the early 1970's. The input flexibility is remarkable with dual tape loops, dual phono stages which had adjustable sensitivity loading for mm or mc cartridges and amplifier damping was also adjustable....again, a pretty special offering especially considering its vintage!!!
Now then....sound....I have no clue.....would a restored accuphase sound as good as a new sub $1,000 Rega integrated? I guess it depends on what you are after.....i know I would rather look at the accuphase with the meters, all the knobs....it would simply be more interesting aesthetically. I understand that it was pretty smooth considering it was early SS. You would also get the satisfaction of saving an old piece of gear for the next generation. Is a 1975 classic car a better overall car than a current model, probably not but there is something really cool about being a custodian of something rather than just a consumer.
Also, you might check with accuphase authorized service for they, like Mcintosh, service most of their legacy products. My 2 cents.