Unused, but has been stored for a long time. Please check the condition in the photos. Shipping is planned via Yu-Packet. It will be simply packaged, so if you prefer another shipping method, please send a message. This item is from my elderly father, who used to run an electronics store. He loves audio equipment and made many vacuum tube amplifiers as a hobby. I am a complete novice, so the operation has not been confirmed. Also, I cannot answer technical questions. Please understand this before purchasing. If there is a defect, we will accept returns within one week. In that case, please do not rate the transaction and contact us via the transaction message. The transaction will be canceled and a refund will be issued upon receipt of the returned item. We apologize, but you will be responsible for the return shipping costs.