Main unit, genuine adapter. Operation confirmed. (See details below. Please read carefully.) ・Checked the response of each button and knob. ・Confirmed the input/output terminals on the back of the main unit. Although I do not own a compatible electronic drum set, I have confirmed that the drum sound module is triggered by inputs from each input terminal. ・MIDI terminals have not been confirmed as I do not have the corresponding equipment. ・Please understand that not all functions have been checked, and purchase with this in mind. Dust removal with a duster, wiping with a cloth, and simple cleaning of the terminal parts will be performed before shipping. ※Please note that the item may be sold out elsewhere due to being listed on other platforms.