Auction only for 2 BANNEDstern electric 543A BANNED best output for 101D transformers.Why i say BANNED best.I had try almost all BANNED output from BANNEDstern electric.like 160C 185A 197A 132C or 154C output for my DIY 101D pre-amplifier.After i try all BANNEDse output transformers in 5 years.i end it up with 543A output BANNED best sounding to my hearing.BANNEDy have everything that i want from BANNEDm.I m not saying oBANNEDr output BANNED not good.But on my 101D i like BANNED 543A BANNED best.