Social media users are going crazy about a little known iTunes trick that can let you jack up the volume on your audio. It involves changing the equalisation setting while playing audio on your device. In sound recording and reproduction, equalisation is the process commonly used to alter the frequency response of an audio system using filters. On your iPhone the EQ setting is set to ‘off’ by default. However you have the option to change it to a whole raft of different settings such as Bass Reducer, Flat, Vocal Booster or Late Night — if you want to get a little more oomph from quieter parts in music or movies.
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