I was able to perform basic operations with CDs. I haven't tested the other knobs and such because I don't understand their purpose. Accessories: Remote control (RM-D250) It may not be the original remote control, but the type is almost the same, and normal operations were possible. ◯ Other observations When I turned it on after a long time, the CD tray opens and closes, but the CD insertion is a little sticky. (It was smooth the last time I used it.) I think it might be a good purchase for someone who can do cleaning, washing, and inspections. I don't have much audio knowledge, but I will try to accommodate any requests. Thank you.