Amp repair...What to expect.

Just got my amp back from repair shop. I know there's a burn in period for new electronics, but would new caps, transistors, etc. result in a lack of detail in the sound? What are the typical changes to the sonics after service?

It's a Sunfire 300 and had every thing replaced except power caps; they did not need replacement. (Sunfire authorized service shop).

Many thanks.