These are a BRAND NEW pair. I took out of crate to test and play for a Total of 10 hours and take pics! They are gorgeous and sound amazing. Theses do not have the upgraded balanced silver output transformers. I have 3 pairs of Output tubes. 2 pair are factory terminated and one pair will need to be terminated with the ends from the burnt out pair when the time comes. I am also including my prized Utopia 2 chasis matching preamp. The pairing will outperform anything that you have ever heard at twice the price. If interested I will also include the matching NAT Phono Stage with new batteries for an additional $3k. This is an awesome setup! These were only bested in my System by the Wavac 833's and Joule Electra Destiny's and only ever so slighty. I have had Bryston 28SST2's Melos MAR 333 Gold upgraded, Plinius SA250MKIV, Classe Omega Ref, Bat 600se, Bat 6200 with Pass Active Xovers, Krell FPB750mcx, Cary 1610's, 211m's, SLM 200's, 805c's 805AE's, Joule Electra Rites of Passage, JC Verdier 845luxe, Viva Verona XL's, I have mated them with Wisdom m75's Gershmans Gaps, Egglestons and Odeons gave them each a 2 hour audition no problem with any load It beat them all. As a matter of fact I was considering buying another pair, but things change quickly. I was not going to sell but must downsize my medical issues have reared their ugly head. Buyer to pay all PayPal and shipping fees.