EQ Range Contents 20–60 Hz Extreme low bass. Most speakers cannot reproduce this. 60–250 Hz The audible low-end. Files with the right amount of low end sound warm, files without enough sound thin. 250 Hz–2 kHz The low-midrange. Files with too much in the low-mids are hard to listen to and sound telephone-like. 2 kHz–4 kHz The high-midrange. Where most speech information resides. In fact, cutting here in the music and boosting around 3 kHz in your narration makes it more intelligible. 4 kHz–6 kHz The presence range. Provides clarity in both voice and musical instruments. Boosting 5 kHz can make your music or voiceover (not both!) seem closer to the listener. 6 kHz–20 kHz The very high frequencies. Boosting here adds “air” but can also cause sibilance problems