I have Pioneer 6.5s in the front, and RF FRC3269 6x9s. I also have a Kenwood KDC-MPV619. Its 22x4 RMS. If I bought an amp for my speakers, would I really notice a difference? All 4 of my speakers (I think...CC threw away the box for my Pioneers) can handle 75 watts RMS. If I gave the, 75 watts RMS, would it be like "WOW", or be like "I think I can tell a difference?..."