Only selling on Mercari. It's an old item. New and unused. I have no knowledge of it, so I can't explain it. I also cannot guarantee its operation. The storage condition is good. Please check the product in the photos. We are waiting for those who understand to consider purchasing. Multiple purchase discount in progress If you purchase multiple items on sale and they can be shipped together, we will offer a discount. Please comment. Discounts are not possible due to Mercari's system if you press the purchase button first. #Vacuum tube #NEC #Toshiba #Hitachi #Audio #6080WA