There’s no app to control the EQ, only the bodily controls together with a Bluetooth join button, an impact/quantity knob and two for bass and treble. As soon as powered on, you need to use the quantity knob to set a max headroom and modify amount over the fly https://www.bluetoothspeaker.top/waterproof-bluetooth-speaker-handsfree-noise-reduction-dustproof-bluetooth-speakers/