iPhone 4S’s max volume should be lower for example than iPhone SE 1’s max volume, so this preset isn’t the best. This preset is inspired by my Razer Kraken 2016 preset. PLEASE put the reduction bands. You could also prepopulate with bands and add the reduction bands first, for safety reasons. Take into account the bands’ order, for max quality.
Lowshelf from 20 hz with -8 dB ;
Lowshelf from 100 hz with +78.5 dB => DON’T forget the reduction bands! <= ;
Lowshelf from 1200 hz with +0.5 dB ;
Lowshelf from 1300 hz with +0.5 dB ;
Lowshelf from 1400 hz with +0.5 dB ;
Lowshelf from 1500 hz with +2 dB ;
Lowshelf from 4300 hz with -86 dB gain and 0.45 Q factor .