There’s no app to regulate the EQ, only the bodily controls together with a Bluetooth be a part of button, an affect/quantity knob and two for bass and treble. When powered on, you must make the most of the amount knob to set a max headroom and modify quantity https://www.bluetoothspeaker.top/rgb-bluetooth-5-0-speaker-with-stereo-sound-bass-support-tf-card-aux-waterproof-speaker/