Electro-Harmonix 6922 Preamp Tube The Electro-Harmonix 6922 Preamp Tube is often used for Hi-Fi applications. The 6922 / 6DJ8 tube type is equivalent to the European ECC88 / E88CC tube and can be used in any 6922, 6DJ8 or ECC88 circuit. Get the datasheet here, and find more informaton on the E88CC here.
