6922
Dual Triode · IHT · 9-pin Noval · 1958
“Premium 6DJ8. Sought-after for hi-fi preamps.”
Medium-gain dual triode for driver and line stage applications
The 6922 (E88CC) is the premium long-life version of the 6DJ8, specified for 10,000-hour minimum lifespan versus the 6DJ8's 5,000 hours, with tighter manufacturing tolerances. It is electrically identical to the 6DJ8 but built with better materials and quality control, making it the preferred variant for critical audio applications. The E88CC designation follows the Philips/Mullard European naming convention and is the same tube. Amperex PQ (Premium Quality) and Siemens E88CC are the most desirable NOS variants, with Amperex commanding particularly high prices for genuine Holland-manufactured examples.