6DJ8/6922 Selection Guide

6DJ8 / 6922 Tubes

6DJ8 was designed as broad band RF amplifier for communication equipments and TV sets. It is low noise and has high conductance which also makes it a good audio amplifier.

Due to high conductance requirements, 6DJ8/6922 type tubes require special construction (called 'frame grid').

6DJ8 tends to be prone to microphony. This applies to many NOS 6DJ8 types as well as current production 6DJ8 types.

This is not a problem for low-gain buffer application such as CD Players and line stages. For high gain use such as phono or mic pre-amp, it is best to choose the right tube to keep microphonics under control.

6DJ8 family of tubes

• 6922 High reliability version of 6DJ8 with slightly higher power rating. 6922 is plug-in compatible with 6DJ8/ECC88 in most audio gear. E88CC is the European numbering for 6922.

• ECC88 European numbering for 6DJ8.

  

• 6N23P Russian copy of 6922. The 6N23P has gained a lot of popularity amongst audiophiles, with Voskhod made versions being the most in demand.

• PCC88 / 7DJ8 6DJ8 with slightly different filament. NOS 7DJ8 / PCC88 are real bargain since they have the exact same internals a 6DJ8 / ECC88 except for the filament.

• Russian 6N1P Similar to 6DJ8 and noted for being very linear. It can sub for 6DJ8, but check with your manufacturer first. 6N1P is sold under different brands, but they are all made by Voskhod factory in Russia with the Flying Rocket logo.

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6DJ8 Selection Guide

• In high gain application like phono or preamp, microphonics and noise is critical. Gold Lion E88CC / 6922, Electro-Harmonix 6922EH Gold, and Electro-Harmonix 6922EH are all low noise and very low microphonic. These are highly recommended for any critical listening application.
• For line stage and CD Player application where gain is low, any of the current production 6DJ8 / 6922, as well as NOS 6DJ8 / 6922 / PCC88 tubes will work well.