Yes, 65 watts is plenty for most systems and rooms. If you were to hear a full 65 watts of sound, it would likely make your ears bleed unless either your speakers are really inefficient or your room is gargantuan.

This is why it's better to have good power as opposed to merely a lot. Low-end brands like Sony, JVC, Kenwood, and Pioneer tend to inflate their power numbers at the expense of quality to appeal to ignorant shoppers who "shop by the numbers".

Jeff