Just got a set of Visang R02s. From the reviews, i assumed these would have decent mids and bass. I recall a review on here stating "the treble takes a back seat to the mids and bass" Comparing them to my old set of Bose IE's, they sound pretty weak. They lack bass all around and the mids are so-so. I know, for $34 i didnt expect much, but i sure expected more than this. They have about 5 hours on them, i'm hoping they improve, but i'm not counting on it.
If anything it's a learning experience. I guess I will make sure to buy a bass heavy set of IEMs next time around. I never really thought my Bose IE's were considered "bassy", I really just thought they lacked highs/treble