What should i be hearing in each ear? Are my earphones good?

[Paka]

I hear both beeping and static in both ears, it's just stronger in the left ear. Is this what I should be hearing?
http://www.dealtime.com/xPF-Philips-Phi ... Twin-Vents
These are my earphones^
I'm guessing they arent good enough, or do i NEED headphones?

[Ness]

Those are more than good enough.

[Paka]

Thanx! Also, would it be better with or without the little cotton buffer things that you put over them?