This is a Behringer HPA40 portable PA system, including a set of two speakers. It has a USB port, LEVEL adjustment knobs, MIC IN, LINE IN, and a DC IN 18V input. A power cable is included. I connected it to a power source and performed a basic operational check, confirming that sound is produced from both microphones. I have not performed any other detailed operational checks. 【Condition of the item】 Overall, there are scratches and minor imperfections consistent with use. There are no particularly noticeable major damages, but please consider that this is a used item. Thank you.