This item was used with my grandfather's homemade audio set. It appears to have been handled with care, but details and functionality are unknown. Thank you for your understanding. I am also listing other audio components (transformers of different sizes, vacuum tubes, etc.), so please take a look at those as well. *Everything in the photos is included. Please confirm before purchasing. *Usually, I can ship the same day, but I travel frequently, so please contact me if you need it urgently. *Operation is unknown. No claims or returns accepted. #audio #TANGO #tango #transformer