Thermionics means "advanced listening" emblem featuring our 12AX7 vacuum tube illustration. 3" die cut vinyl sticker. 12AX7 tube THERMIONICS sticker$3.00PriceQuantity*Add to CartBuy NowWhat you getThermionics means Advanced Listening emblem featuring our 12AX7 tube illustration. 3" die cut vinyl sticker. Also available with EL84 or KT66.
