LED1 to LED4 (seen by briefly pressing DISCOBALL FIRE LIGHT) are used to adjust the LED lighting on the front of the PA-360.
LED1: the louder the music, the higher, lower (or from both sides to the middle) the LED will reach;
LED2: the LED lighting on the inside of the speaker changes;
LED3: most comparable to a campfire;
LED4: various colours according to a fixed pattern.