TBH I need to EQ ANY iems/headphones because they just don't have the bass I want. However I made the mistake of buying bass heavy iems because they have no treble quality. I got the encores and just EQ the bass and it is marvelous. However, normal bass EQ just don't cut it. If you have any android DAPs, try installing viper bass because it reaches into the deep bass spectrum unlike your standard EQ.