Tesla E88CC Gold pins N.O.S. tubes. A wonderful sounding tube, on all sonic parameters. A tube within the very best of all times at a convenient price.

HQ tubes made for the Czech post, from the Prague factory (Code32) . Original military boxes. These were made for the military, as you can see from the sword signs on the back side of the tube. This is probably the best ECC88 ever made. Sonically it is very similar to the Telefunken ECC88. Very good selected, and this batch has very high test values, meaning an exceptional long life. These are no JJ Tubes.

Made in ex-Czechoslovakia. Limited stock.

A New Old Stock (N.O.S.) tube is an unused tube no longer in production. A N.O.S. tube is good today as it was originally, because the glass sealing techniques perfected long ago have been in use for years and years. A N.O.S. tube can potentially last a lot longer than modern tubes. When we have available a N.O.S. tube stock that comes from the same production run we carefully select them for gain, for section-to-section uniformity and for sensitivity to microphonics. Furthermore, a selected pair of tubes will only include low noise ones.

Information on tube matching