I have recently confirmed that it powers on and functions (produces sound). It's easy to operate, with parameter selection using the parameter knob and value setting using the value knob, allowing for intuitive operation. I used it for home practice without an amplifier by connecting headphones to the output. It also has a rhythm function, making it ideal for practice. The main unit only, power adapter is not included. Please check the condition in the images. If you have any other questions, please comment. I have checked the condition and operation as much as possible, but please understand that this is a used item and we ask for no claims and no returns. Shipping will be via Sagawa Express. *We do not ship to Hokkaido, Okinawa, and remote islands. If you wish to have it shipped there, we will accommodate it with an additional shipping fee. Thank you.