It might be because of shift in your ear wax. We should all get ear wax cleaner from a drug store, and clean ours - most cost effective tweak.
Also it might be your body condition. Some audio lovers would actually get up and exercise to be in top condition for their listening session.
I find audio a great help in exercising - with a sub going on a pop music with heavy drum beats, you don't feel the pain.
Anyway, I found that if you assemble a liquid sounding system, then those special moments happen more often. You can enjoy music right from the beginning without having to warm them up.
Also it might be your body condition. Some audio lovers would actually get up and exercise to be in top condition for their listening session.
I find audio a great help in exercising - with a sub going on a pop music with heavy drum beats, you don't feel the pain.
Anyway, I found that if you assemble a liquid sounding system, then those special moments happen more often. You can enjoy music right from the beginning without having to warm them up.