Electro Harmonix 6922 Gold Pins tube is a gold-plated pin version of their very popular preamp tube. This 6922 tube is highly recommend for Audible Illusions Modulus preamps. The 6922 / 6DJ8 tube type is equivalent to the European ECC88 / E88CC tube and can be used in any 6922, 6DJ8 or ECC88 circuit. Low noise, extended life 6922 from Electro-Harmonix. These are premium version of Russian 6922s with gold pins.Made In Russia.