When frame grid tubes, we write it in the description. To give you an idea, the size of a large bacteria is 5um. The frame grid wire is so thin, when you open up a defective tube, you cannot see it with the bare eye. Frame grid wires can be as thin as 10um, which is technologically speaking a masterpiece of fine mechanics. These are the later technology, and also a technology only very few could make. The frame grids have generally better parameter stability, lower noise and lower hum. Special attention needed: This tube excist as normal grid tube and as frame grid tube. This is not possible for the most wanted part numebrs. Don't trust it when a sellers offers those repeatedly for low prices. The most frauded tubes there are ECC803S and ECC88, because thes are practically unavailable as NOS tubes. So you think you buy NOS, but they're not. On internet auction sites, tubes are re-labelled, retro-gold plated, re-branded and used tubes are put in re-printed new boxes with the stamps ne-newed. Tube fraud: Unfortunally a big item particularly with this tube number. Large dimension ECC88, with higher dissipation.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |