OPERATION MANUALINPUT---Connection for microphoneVOLUME---To adjust the volume of microphoneINPUT---Connection for guitar VOLUME---To adjust the volume of guitarBASS---Controls the boost and cut of the low frequency rangeMID---Controls the boost and cut of the middle frequencies rangTREBLE---Controls the boost and cut of the upper frequencies rangCHORUS---For the choice of playing musical instruments during theChorusSPEED---For adjusting the rate of the chorus effectPHONES---For connecting headphones with a 6.5mm stereo pang.When using the headphone jack, the speaker is disconnectedPOWER---Turns amplifier ON and OFF SPECIFICATIONOUTPUT POWER 30WattsAC POWER 220V 50HZSNR frequency 70 db.SPEAKER 8” (4 ohms)SIZE 380H*330W*190D