Depends on the quality of the caps used. Could be quite a bit better than new. Talk to the tech, ask about how he selects caps. There is a huge range of performance- and yes you do pay for better.
Expectations after re cap of power-amp
My 1982 Yamaha M-2 power amp is in the shop and this time I agreed
to replace all the suspect capacitors. Two
of the capacitors are the size of coffee cans and the total bill may exceed
$500. I am told that since all the
replacement parts will be as good as or better than the original parts it should
sound as good as new or better.
I’ve never done this before. Should I expect “as good as new” or am I completely wasting my money?