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Amperex invented the frame grid 6dj8/6922

I suggest you try some Holland made 6dj8 or 6922. Because their engineers decided, initially, how to make the tubes. They decided on the materials, and all other aspects of the design. And typically, it was built to a level exceeding the requirements. After the initial design they improved it with the "A frame", and other upgrades including the 6922 and 7308. Both are designed for long life and tighter tolerances. The special quality or SQ are 10,000 hour tubes. The Amperex and Siemens 7308 are still some of the best of the type made and more importantly the best sounding, although everyone has their personal faves.


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  • Amperex invented the frame grid 6dj8/6922 - DAK 12:11:00 05/28/17 (0)

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