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 cable to hold on the t-shirt.
YOU MUST EQ YOUR EARBUDS WITH IAUDIO (OR ANY OTHER DEVICE/SOFTWARE WITH GREAT NO DISTORTION EQ): IT IS ALL ABOUT INCREASE THE SUB-BASS FREQS (20-80 HZ), LOWERING DOW A LOT THE OTHERS (NEGATIVE VALUES) AND INCREASE HIGHS AND TOTAL VOLUME. NOT ALL PHONES CAN HANDLE IT, BUT GREAT EARBUDS WITH LARGE DRIVES CAN!!! YOU WILL GET THE REAL LIFE SOUND THAT VERY FEW PEOPLE AROUND THE WORLD KNOWS HOW TO ARCHIVE. WITH IAUDIO DAP, TAKE SOMETING LIKE THIS ON THE 5 BAND EQ: +12, +0, -6, -2, -1. OFF COURSE IT DEPENDS ON THE EARBUD YOU ARE LISTENING TO. YOU HAVE TO BE SENSITIVE AND TRUST AND TRY TO SHAPE THE SOUND TO HIGH-FIDELITY. IT IS AN ART. GO FOR IT!!!!!!!!!!!!!!!!!!!!!!!!!!!!! FOR THE Philips SHE7850, TRY SOMETHING THIS: BBE 1, MACHBASS 10, EQ +12, -2, -7, +4, +5. VOLUME 20.