FANTASTIC SUB-BASS TONES, SUB-WOOFER REAL LIFE QUALITY, VERY STRONG, for bass heads, but need to use FOAMS (not included). CLEAN mid-range and forward, but very recessed highs that can be fixed with EQ. If you have IAUDIO DAP and know how to equalize your phones (see my recomendations on the forum - Increase sub bass, lower mids and increase highs), THIS EARBUD IS BETTER THAN YUINS, FOR BASSHEAD ADDICTS. WITH GREAT MIDS and sufficient highs for sensitive ears. BUT YOU HAVE TO USE FOAMS TO INCREASE BASS and BETTER fit in the ear. AND put a clip on the...