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iFi 6922 tube kit

Stemming from the R&D work into the development of the micro iTUBE, the NOS6922 matched tube pair is another ‘atypical’ product from iFi that significantly improves the audio experience. For any tube/valve audio product from amplifiers to CD players that use the common 6922 tube/valve, the premium NOS 6922 matched pair set is a straight ‘drop-in’ replacement.* What is it? The NOS 6922 tube/valve matched pair is a higher-quality replacement set for just about every audio component that currently uses the 6922.


The 6922 tube/valve is one of the most famous ‘dual triode’ designs and is ubiquitous. It has and is still, used in many tube/valve audio products from CD players to headphone amplifiers.

First introduced by Western Electric in 1946 with the WE396A, from the 1950s onwards (and for the next 30 years thereafter) General Electric (and several other tube/valve manufacturers) followed Western Electric with their own premium version of 6922. This range had controlled warm-up and tight specifications on grid-current, noise and microphony. The result, significantly smoother and more organic sound qualities.

While the 9-pin design was used, the electrical pin outs changed. As such, the GE5670 was not a straight ‘drop-in’ substitute for the 6922. So the GE5670 remain unloved and unused until……2014