EVERYTHING ABOUT JBL BLUETOOTH SPEAKER AT COSTCO

There’s no application to adjust the EQ, just the physical controls such as a Bluetooth connect button, a power/volume knob and two for bass and treble. Once powered on, you can use the volume knob to set a max headroom and change volume around the fly from your supply.The Ultimate Ears Wonderboom 4 is undoubtedly the best cheap Bluetooth speaker