There’s no app to control the EQ, basically the bodily controls together with a Bluetooth be part of button, an affect/quantity knob and two for bass and treble. The moment powered on, you should utilize the amount knob to set a max headroom and modify amount on the fly https://www.bluetoothspeaker.top/bt-portable-rgb-light-bluetooth-speaker-music-column-3d-stereo-boombox-speakers/