I have a little Bose stereo that is about 5 years old now, and recently it seems that it can't play as loud as it used to. I don't completely thrash it, but when I listen to music I want to hear it and I've been forced to turn every volume I can find all the way up to achieve what I would call a medium to loud volume. Is it losing it's power or am I losing my hearing? (and I'm not btw lol)