Alex, neither "night/day" nor "just a bit", but most likely no difference at all. Unless you listen at an extremely high average level(damaging to hearing)your present amplification should be fine. Average comfortably loud levels use about 1 watt, and some pop music with very little dynamic range(almost uniformly loud)doesn't take much more. Material with a wide dynamic range, such as much of the classical music that I listen to and some pop material and movies requires much more on brief peaks, but even then isn't likely to exceed the maximum capacity of your present amplifier in the 2200.
